DEPT OF CIVIL ENGINEERING

Researcher : Anvuur AM

List of Research Outputs

 

Kumaraswamy M.M., Rahman M.M., Ekambaram P., Ugwu O.O., Anvuur A.M. and Yogeswaran K., Multi-Disciplinary and Multi-Functional Teams in PPP Procurement & Delivery, In: K. London, G. Thayarapan and J. Chen, CIB W092 Procurement Systems Conference on ‘Building across Borders’. Newcastle, Australia, CIB and University of Newcastle, 2007, 250-262.

 

Kumaraswamy M.M. and Anvuur A.M., Selecting Sustainable Teams for PPP projects, Building & Environment. UK, Elsevier, 2008, Vol. 43, Issue 6: 999-1009.

 

Kumaraswamy M.M., Mahesh G., Anvuur A.M. and Chung K.H.J., Targeting truly Integrated ‘Value Networks’ for PPPs, In: Y. Nielsen, 5th International Conference on Innovation in Architecture, Engineering and Construction (AEC2008), 25-28 June 2008. Antalya, Turkey, Middle East Technical University, Turkey . Turkey, Middle East Technical University, Turkey, 2008, 1-11.

 

Mahesh G., Kumaraswamy M.M., Anvuur A.M. and Coffey V., Contracting for Community Development: a case study based perspective of a public sector client initiative in Hong Kong, In: S.M. Ahmed, S. Azhar and S. Mohamed, 4th Intnl. Conf. on Construction in the 21st Century (CITC IV). Gold Coast, Australia, Griffith University and Florida International University, 2007, 366-372.

 

Researcher : Au ASK

Project Title:

Optimisation of the efficiency of compensation grouting for ground settlement control

Investigator(s):

Au ASK, Lee KM

Department:

Civil Engineering

Source(s) of Funding:

Competitive Earmarked Research Grants (CERG)

Start Date:

08/2003

 

Abstract:

To seek a method for predicting the soil fracture direction of single and multiple injections injections through laboratory experiments; to investigate the grouting behavior, the influence the grouting operation on the existing structure and the ground surface displacement pattern under a working stress level by conduct several series of centrifuge tests. (Numerical simulation will be carried out to simulate the centrifuge test); to establish a cost effective fracture controlled compensation grouting design criteria to optimize the compensation efficiency and minimize the grouting cost and the risk of damage of nearby structure by analyzing all the experimental and numerical results.

 

Project Title:

Fundamental study of hydraulic fracture in soil

Investigator(s):

Au ASK

Department:

Civil Engineering

Source(s) of Funding:

Seed Funding Programme for Basic Research

Start Date:

01/2006

 

Abstract:

Hydraulic fracture is a useful technique to apply for remediation of contamination in soil and grouting during tunneling work. The effectiveness of the technique highly depend the fracture orientation and geometry. The used of hydro-fracture grouting during the tunneling is popular in construction industry. Moreover, hydraulic fracture technique is also an enhancement technology to increase formation permeability for the extraction of organic compounds from soil. In fact, the general criteria for predicting the hydraulic fracture still have not been established. The prediction of fracture orientation still heavily depends on crude empirical relationships, which are in general unable to match for complex situations in the field. The generation of excess pore water pressure during the hydraulic fracture has not been investigated. Furthermore, if the hydraulic fracture is not operating in a good controllable condition, it may cause the influence on the underground structure and superstructure, undesirable ground heave outside the target treatment zone. The proposed research aims at establishing the criteria for predicting the hydraulic fracture orientation and developing an effective fracture controlled injection technology by performing a series of laboratory tests. The main purpose of the project described herein is to develop a high efficiency fracture-controlled theory and to recommend new criteria for design and operation in different techniques. o to seek a method for predicting the soil fracture direction of single and multiple injections o to investigate the grouting behavior, the influence the hydraulic fracture on the soil properties (permeability, soil density and shear strength)

 

Project Title:

Investigation on Impulsive Compaction Grouting in Saprolitic Soil

Investigator(s):

Au ASK

Department:

Civil Engineering

Source(s) of Funding:

Small Project Funding

Start Date:

10/2006

 

Abstract:

Grouting is a versatile ground improvement technique of many applications worldwide, such as groundwater cutoff for the MTR system and SSDS tunnels in Hong Kong; settlement control for the London Heathrow Express, London Jubilee Line Extension, Baltimore Region Rapid Transit System, Canadian St. Clair River Tunnel Project, and Lisbon Underground; densification of liquefiable soil in California, seismic retrofit of the Laurel Street Bridge in Santa Cruz, California, temporary lateral support system for the Atlantic City Expressway Extension, and bearing capacity enhancement of bored piles in China resulting in a shallower founding level, etc. HKSAR Government is investigating the technical feasibility of stabilizing loose fill slopes by grouting. However, the state-of-practice is way ahead of our theoretical development on the technique and our understanding of its impact on soil behavior. As a result, most grouting operations are designed using empirical rules of thumb, expensive pilot-scale field tests, and/or proprietary design methods developed by individual contractors specific for their equipment, material and operation. Therefore, it is difficult to apply previous successful experience to other situations, and to predict the behavior of soil without expensive field trials. Impulsive compaction grouting is a new and innovative technique using impulsive grouting pressure to further improve the engineering properties of soil. The research program is proposed to develop a practical feasibility of impulsive grouting technique, and to develop a better understanding of soil behavior during grouting. Moreover, some practical uses of grouting with potential applications in Hong Kong and the Pearl River Delta will be investigated. These uses will result in considerable economy in construction and saving of natural resources. Key objectives of the proposed research are:(1) To investigate the effectiveness of using impulsive grouting pressure to improve the engineering properties of soil and to develop guidelines on the choice of optimal operating parameters under an controllable laboratory condition.(2) To develop a better understanding of the soil-grout interactions during conventional and impulsive grouting through small-scale and large-scale experimental studies

 

List of Research Outputs

 

Au A.S.K. and Yeung A.T., Discussion of 'Forms and sand transport in shallow hydraulic fractures in residual soil', Canadian Geotechnical Journal. 2007, 44(12): 1474-1475.

 

Au A.S.K., Yeung A.T., Soga K. and Cheng Y.M., Effects of subsurface cavity expansion in clays, Géotechnique. 2007, 57(10): 821-830.

 

Yeung A.T., Mak S.W., Fung I.W.H. and Au A.S.K., A new laboratory apparatus to evaluate hydrodynamic dispersibility of soil during ocean dumping, Geotechnical Testing Journal. ASTM, 2008, 31(3): 199-205.

 

Researcher : Au FTK

Project Title:

Ductility and deformability of high-strength concrete beams partially prestressed with conventional and non-conventional unbonded tendons

Investigator(s):

Au FTK, Kwan AKH

Department:

Civil Engineering

Source(s) of Funding:

Competitive Earmarked Research Grants (CERG)

Start Date:

10/2004

 

Abstract:

To study the behaviour of high-strength unbonded partially prestressed concrete (UPPC) beams with conventional and non-conventional tendons, which covers the full range including service behaviour, ultimate flexural strength and post-peak behaviour; to develop theoretical models to simulate the full-range behaviour of high-strength UPPC beams which are capable of predicting from the initial stage to the post-peak stage; to investigate the ductility or deformability of UPPC beams and the moment redistribution in continuous UPPC beams; to propose design guidance for practising engineers.

 

Project Title:

Shrinkage cracking of reinforced concrete structures

Investigator(s):

Au FTK

Department:

Civil Engineering

Source(s) of Funding:

Small Project Funding

Start Date:

09/2005

 

Abstract:

Shrinkage of a concrete structure as the concrete dries after hardening is a natural phenomenon. It could lead to substantial shortening movement and, if the movement is restrained, serious cracking of the concrete structure. This is a common problem in Hong Kong, especially in large podium structures with several tower blocks on top. In many cases, the shrinkage cracks formed have been causing aesthetic, water leakage and durability problems. In a recently completed applied research project funded by the Hong Kong Housing Authority Research Fund (HARF) that comprises experimental work and development of application software, apart from addressing most of the problems, many interesting issues have also been identified.The cracking of reinforced concrete is a very complicated phenomenon as it involves the interaction between concrete and steel reinforcement, the shape and size of the structure as well as the stiffness of the supports. It is against this background that the present project is proposed and the objectives are:1. To carry out some pilot tests to investigate the mechanism of shrinkage cracking; and 2. To develop an efficient computational method for the analysis of shrinkage movement and strain.

 

Project Title:

Establishment of Bridge Rating System for Ting Kau Bridge

Investigator(s):

Au FTK, Lee PKK

Department:

Civil Engineering

Source(s) of Funding:

Highways Department - General Award

Start Date:

08/2006

 

Abstract:

To conduct research to establish a comprehensive bridge rating system for Ting Kau Bridge.

 

List of Research Outputs

 

Au F.T.K., A Tale of Two Classes: Language Issues in Teaching Civil Engineering, International Conference on Language Issues in English-medium Universities: A Global Concern 2008, co-hosted by the Faculty of Arts and the Faculty of Education in collaboration with the English Centre, The University of Hong Kong, Hong Kong, 18-20 June 2008.

 

Au F.T.K., Baseline Finite Element Modelling of Hong Kong Ting Kau Bridge, Invited Lecture, Hunan University (湖南大學), Changsha, China, 21 November 2007., 2007.

 

Au F.T.K., Jiang R., Leung C.C.Y., Xie L., Lee P.K.K., Wong K.Y. and Chan W.Y., Development and calibration of finite element models for structural health monitoring of Ting Kau Bridge, Invited Lecture, In: Y B Yang and J D Yau, Proceedings of International Symposium on Environmental Vibrations (ISEV 2007), Taipei, Taiwan, November 28-30, 2007. Taiwan, National Taiwan University, 559-566.

 

Au F.T.K. and Yan Z., Nonlinear dynamic analysis of frames based on semi-rigid technique, In: WX Ren, H Hao and XQ Zhu, Proceedings of Second International Conference on Structural Condition Assessment, Monitoring and Improvement (SCAMI-2) 19-21 November, 2007, Changsha, China,. Beijing, Science Press, 2007, I: 302-308.

 

Au F.T.K., Liu C.H. and Lee P.K.K., Shrinkage analysis of reinforced concrete floors using shrinkage-adjusted elasticity modulus, In: C K Choi, C Meyer and N Bicanic, Computers & Concrete. Korea, Techno-Press, 2007, 4 (6): 437-456.

 

Au F.T.K., Time-Dependent Behaviour of Concrete Structures with Special Reference to Podium and Frame Structures, Invited Lecture, Central South University of Forestry and Technology (中南林業科技大學), Changsha, China, 21 November 2007., 2007.

 

Au F.T.K. and Bai Z., Two-dimensional Nonlinear Finite Element Analysis of Monotonically and Non-reversed Cyclically Loaded RC Beams, Engineering Structures. New York, ScienceDirect, 2007, 29 (11): 2921-2934.

 

Chan E.K.H., Au F.T.K. and Kwan A.K.H., Experimental and numerical study of full-range behaviour of partially prestressed concrete beams with external tendons, published in CDROM, Proceedings, IABSE Symposium, Weimar, Germany. 2007.

 

Chan K.H.E., Au F.T.K. and Kwan A.K.H., Experimental and numerical study of full-range behaviour of partially prestressed concrete beams with external tendons (Paper A-0135), Proceedings of IABSE Symposium, Weimar, Germany, 19-21 September 2007. IABSE, 8.

 

Cheung Y.K., Au F.T.K. and Young B., Numerical and Experimental Investigation of Thin-Walled Structures, (Keynote Paper), In: M Mahendran, Proceedings of Fifth International Conference on Thin-Walled Structures, Brisbane, Australia, 18-20 June 2008. Brisbane, Australia, Queensland University of Technology, 1: 29-40.

 

Cheung Y.K., Tham L.G. and Au F.T.K., Some Aspects of the Development of Structural Engineering and Computational Mechanics in Mainland China and Hong Kong, Invited Paper, Proceedings of The Institution of Structural Engineers’ Centenary Conference – ‘Turning Ideas into Reality’” 24-26 January 2008, Hong Kong. London, UK, The Institution of Structural Engineers, 2008, 56-67.

 

Du J.S. and Au F.T.K., Deformability for prestressed concrete member with unbonded FRP tendons, In: WX Ren, H Hao and XQ Zhu, Proceedings of Second International Conference on Structural Condition Assessment, Monitoring and Improvement (SCAMI-2) 19-21 November, 2007, Changsha, China. Beijing, Science Press, 2007, II: 1113-1117.

 

Du J.S., Au F.T.K., Cheung Y.K. and Kwan A.K.H., Ductility analysis of prestressed concrete beams with unbonded tendons, Engineering Structures. New York, ScienceDirect, 2008, 30 (1): 13-21.

 

Kwan A.K.H., Ng P.L., Au F.T.K., Lam Y.K. and Liu C.H., On-line geometric constraint accommodation for adaptive constrained mesh generation, In: C K Choi, Proceedings of 4th International Conference on Advances in Structural Engineering and Mechanics. Korea, Techno Press, 2008, 3072-3084.

 

Kwan A.K.H., Ng P.L., Au F.T.K., Lam Y.K. and Liu C.H., On-line geometric constraint accommodation for adaptive constrained mesh generation, Proceedings, 4th International Conference on Advances in Structural Engineering and Mechanics (ASEM08), Jeju, Korea, May. 2008, 3072-3084.

 

Wang M.F. and Au F.T.K., Precise integration methods based on the Chebyshev polynomial of the first kind, In: Xiaozhai Qi and George C. Lee, Earthquake Engineering and Engineering Vibration. Beijing, China, Institute of Engineering Mechanics, 2008, 7(2): 207-216.

 

Wang Z., Au F.T.K. and Cheng Y.S., Statistical damage detection based on frequencies of sensitivity-enhanced structures, In: Y B Yang, C M Wang and J N Reddy, International Journal of Structural Stability and Dynamics. Singapore, World Scientific, 2008, 8(2): 231-255.

 

Yan Z. and Au F.T.K., Nonlinear dynamic analysis of frames with arbitrary plastic hinges, In: F Biondini and D Frangopol, Proceedings of First International Symposium on Life-Cycle Civil Engineering . London, CRC Press, 2008, 475-480.

 

Researcher : Bai Z

List of Research Outputs

 

Au F.T.K. and Bai Z., Two-dimensional Nonlinear Finite Element Analysis of Monotonically and Non-reversed Cyclically Loaded RC Beams, Engineering Structures. New York, ScienceDirect, 2007, 29 (11): 2921-2934.

 

Researcher : Chan EKH

List of Research Outputs

 

Chan E.K.H., Au F.T.K. and Kwan A.K.H., Experimental and numerical study of full-range behaviour of partially prestressed concrete beams with external tendons, published in CDROM, Proceedings, IABSE Symposium, Weimar, Germany. 2007.

 

Researcher : Chan FP

List of Research Outputs

 

Chen J. and Chan F.P., A preliminary drought mitigation plan for Hong Kong, In: Les Oxley and Don Kulasiri, MODSIM07 International Congress on Modelling and Simulation. 2007, 1492-1498.

 

Researcher : Chan KHE

List of Research Outputs

 

Chan K.H.E., Au F.T.K. and Kwan A.K.H., Experimental and numerical study of full-range behaviour of partially prestressed concrete beams with external tendons (Paper A-0135), Proceedings of IABSE Symposium, Weimar, Germany, 19-21 September 2007. IABSE, 8.

 

Researcher : Chan SN

List of Research Outputs

 

Chen J., Zhang R. and Chan S.N., Drought and water resources security of the East River (Dongjiang) basin, the 7th Shenzhen, Hong Kong, Zhuhai and Macao seminar on Water Supply. 2007, 45-53.

 

Chen J. and Chan S.N., Water resources sustainability in the East River in South China using Water Rights Analysis Package, In: Les Oxley and Don Kulasiri, MODSIM07 International Congress on Modelling and Simulation. 2007, 1985-1991.

 

Researcher : Chandler AM

Project Title:

Local factors in earthquake attenuation modelling

Investigator(s):

Chandler AM, Chan LS

Department:

Civil Engineering

Source(s) of Funding:

Seed Funding Programme for Basic Research

Start Date:

01/2005

 

Abstract:

To acquire (by geophysical field testing) a clear understanding of the intra-regional variation of the rock shear wave velocity structure across the HK region; to obtain a set of representative engineering attenuation relationships for seismic hazard analysis in the HK local region; to realise the concept of using separate factors in the seismological model to represent regional and local mechanisms constituting the earthquake process; to stimulate wider application of the developed modelling methodology to different areas around the world, and to explore alternative means of evaluating parameters to construct representative seismological models for a diversity of conditions; to maintain and strengthen the tri-lateral collaboration between the HK Centre for Earthquake Engineering Research (CEER).

 

Researcher : Chen J

Project Title:

Advancing Land Surface Parameterization in a Coupled Land-Atmosphere Model

Investigator(s):

Chen J

Department:

Civil Engineering

Source(s) of Funding:

Seed Funding Programme for Basic Research

Start Date:

03/2005

 

Abstract:

The increased anthropogenic effects on the natural surroundings (Lean and Warrilow 1989) require a physical-based numerical model system urgently for understanding and predicting potential consequences caused by such effects. Meanwhile, the improved capability in modelling land-surface hydrologic processes (Sellers et al 1997) makes it possible to use a physical-based system to evaluate the availability of the water resources and to study the sustainability of the environment. However, the limitation of our understanding in the hydrologic cycle still is the major obstacle to advancing the model representation and to applying the model prediction, which can guide our regulations in mitigating the natural hazards. For relaxing this limitation, the objectives of the project are planned as follows: 1. To identify the sensitivity of different land surface processes in a coupled land-atmosphere numerical model system, 2. To integrate achievable new understandings of hydrological processes into the land surface parameterization in the coupled model system, and 3. To evaluate the improvement of land surface performance in the system (see Reference at the end of Section VII)

 

Project Title:

Assuring Hong Kong's water supply: learning the lessons of the 1963 drought

Investigator(s):

Chen J

Department:

Civil Engineering

Source(s) of Funding:

Public Policy Research

Start Date:

09/2006

 

Abstract:

1. To survey the 1963 drought effects on socio-economic activities in Hong Kong and in its vicinity including the East River basin; 2. To investigate current and projected water demand and water supply capacity in Hong Kong and its vicinity; 3. To study the current and potential status of rainfall harvest and water resources management in Hong Kong and the East River basin; 4. To explore the probability of forecasting severe droughts in Hong Kong and the East River basin; 5. To study the projected societal effects of droughts at different severities using the 1963 case as a benchmark; and 6. To establish a drought warning system specifically for measuring water supply security for the Hong Kong society, which will benefit the public policy development for attenuating the drought damages.

 

Project Title:

Dominant hydrologic processes for floods and droughts over the Pearl River Basin at different temporal and spatial scales

Investigator(s):

Chen J, Jayawardena AW

Department:

Civil Engineering

Source(s) of Funding:

Competitive Earmarked Research Grants (CERG)

Start Date:

01/2007

 

Abstract:

(1) In the Pearl River basin, which is located in the southern China, the high variability of weather and climate conditions of the region often induces floods and droughts. Such natural hazards result in severe loss of life and properties. Therefore, adequate understanding of the characteristics of floods and droughts in the region is important for employing proper hazard mitigation measures. However, research thus far on the droughts and floods of the Pearl River basin is limited. In view of this, this project aims at:(2) (i) The use of a 50-year (1951-2000) meteorological daily dataset (including precipitation, temperature, wind speed and relative humidity) and the Variable Infiltration Capacity (VIC) hydrologic model to produce the terrestrial hydrologic variables, such as streamflow, soil moisture, latent and sensible heat fluxes, over the Pearl River basin;(3) (ii) The investigation of the physical characteristics of the model inputs and outputs to identify the dominant hydrologic processes (i.e. the processes that dominate a hydrologic system’s performance) for floods and droughts over the basin at different temporal and spatial scales;(4) (iii) The application of the phase-space reconstruction method to study these hydrologic variables and to complement our understanding of floods and droughts identified from (ii); (5) (iv) The exploration of the teleconnection relationship between the climate pattern (such as the El Niño-Southern Oscillation) with the hydrologic variables over the basin to recognize the atmospheric dynamics causing regional extreme weather and climate events; and (6) (v) The establishment of a flood and drought warning system using the VIC hydrologic model and other related tools (including the approaches for computing different flood and drought indices). (7) This project aims not only to advance our understanding of the characteristics of floods and droughts over the Pearl River basin at different temporal and spatial scales, but also to provide an applicable warning system for undertaking mitigation measures. It is expected, therefore, that the outcomes will benefit flood and drought control, and also the overall water resources planning and management in the region. Within a much broader spectrum, an improved understanding of the characteristics of floods and droughts will provide a solid scientific basis for decision-makers to develop and assess realistic environmental policies for mitigating the damages due to extreme weather and climate events.

 

Project Title:

Two regional climate models for dynamical downscaling climate projections over Hong Kong and its vicinity

Investigator(s):

Chen J

Department:

Civil Engineering

Source(s) of Funding:

Seed Funding Programme for Basic Research

Start Date:

07/2007

 

Abstract:

The objectives of this proposed project are to set up another state-of-the-art regional climate model, the CWRF (Climate-Weather Research and Forecasting) model, at the University of Hong Kong, to downscale the climate projections dynamically over Hong Kong and its vicinity, and to exam the downscaling skill of the two regional climate models. Currently, one regional climate model, the RSM (Regional Spectral Model) obtained from the ECPC (Experimental Climate Prediction Center) at the University of California, San Diego, has been established in the University for downscaling the climate projections over the 21st century. However, due to uncertainties and complexities of the climate projections, at least, two regional climate models are needed for comparing the downscaled climate and weather data and for cross-verifying the downscaled regional climate projections. For Hong Kong, information on likely future climate change comes from global climate models (GCMs), usually with a resolution of 100s of kilometers. The outputs from these global models first need to be “downscaled” by using them as inputs to regional climate models (RCMs), such as the RSM and CWRF models, that can simulate climatic factors on a scale with the order of 10s kilometers. This downscaling is necessary for projecting possible extreme weather-related impacts and the RCMs have the capacity to provide spatial details of regional weather and climate. Because of its importance to the future of Hong Kong and the world, climate change study has been identified as one of the Strategic Research Themes (SRT) in the University of Hong Kong. Nevertheless, research on the regional impacts of climate change has not had enough attention in Hong Kong. In particular, the basic research data for studying climate change in Hong Kong and its vicinity are not well developed. So, it is important that we can strengthen our research efforts and clarify our top priority in the study of climate change. The details of the major objectives of this proposal are therefore: 1. to summarize the current climate projection studies distributed by the IPCC (Intergovernmental Panel on Climate Change) for the world and East Asia, including Hong Kong and its vicinity; 2. to test the RSM and CWRF models in simulating the regional climate and weather over the region, and to define a suitable simulation domain and spatial resolution over Hong Kong and its vicinity for these two regional models; 3. to study the reliability of the RSM and CWRF models in downscaling global climate data through the investigation of the historical 1961-1990 climate and weather data over the region; and 4. to apply the RSM and CWRF models to downscale the IPCC’s global climate projections with different future greenhouse gas emission scenarios, and to investigate the differences of these two regional climate model simulations.

 

List of Research Outputs

 

Chen J. and Chan F.P., A preliminary drought mitigation plan for Hong Kong, In: Les Oxley and Don Kulasiri, MODSIM07 International Congress on Modelling and Simulation. 2007, 1492-1498.

 

Chen J., Gao W. and Yue Q.Z.Q., Case study of drilling process monitoring from two adjacent holes with two drills, Proceedings of 42nd U.S. Rock Mechanics Symposium and 2nd U.S.-Canada Rock Mechanics Symposium, June 29 – July 2, 2008, San Francisco, CA, USA. . ASCE, 2008, ARMA 08-219.

 

Chen J. and Young B., Cold-formed Steel Lipped Channel Columns at Elevated Temperatures, Engineering Structures. ELSEVIER, 2007, 29: 2445-2456.

 

Chen J. and Young B., Design of High Strength Steel Columns at Elevated Temperatures, Journal of Constructional Steel Research. ELSEVIER, 2008, 64: 689-703.

 

Chen J., Gao W. and Yue Q.Z.Q., Detection of thin weak zone in weatherrd rocks from automatic monitoring of pneumatic rotary-percussive drilling, In: Meifeng Cai and Jin’an Wang, Boundaries of Rock Mechanics (Proceedings of the International Yong Scholars’ Symposium on Rock Mechanics), April 28 – May 2, 2008, Beijing, China. London, Taylor & Francis Group, 2008, 53-58.

 

Chen J., Zhang R. and Chan S.N., Drought and water resources security of the East River (Dongjiang) basin, the 7th Shenzhen, Hong Kong, Zhuhai and Macao seminar on Water Supply. 2007, 45-53.

 

Chen J. and Wu Y., Exploring hydrological process features of the East River (Dongjiang) basin in South China using VIC and SWAT, In: Xiaohong Chen, Yongqin David Chen, Jun Xia and Hailun Zhang, the IAHS Red Books. Oxford, UK, IAHS Press, 2008, 319: 116-123.

 

Chen J., Lee P., Niu J. and Wu Y., Simple equations for evaluating rainwater collection capcity in Hong Kong at different temporal scales, the 7th Shenzhen, Hong Kong, Zhuhai and Macao seminar on Water Supply. 2007, 242-247.

 

Chen J. and Chan S.N., Water resources sustainability in the East River in South China using Water Rights Analysis Package, In: Les Oxley and Don Kulasiri, MODSIM07 International Congress on Modelling and Simulation. 2007, 1985-1991.

 

Cui W.Z., Chen J., Wu Y. and Wu Y.D., An overview of water resources management of the Pearl River, In: Gustaf Olsson, Professor Emeritus, Lund University, Sweden, Water Science and Technology: Water Supply. IWA Publishing, 2007, 7: 101-113.

 

Fang H.H.P., Zhang M., Zhang T. and Chen J., Predictions of nitrate diffusion in sediment using horizontal attenuated total reflection (HATR) by Fourier transform infrared (FTIR) spectrometry, Water Research. 2008, 42: 903-908.

 

Gao W., Chen J. and Yue Q.Z.Q., Characterization of cavities in marble from automatic monitoring of hydraulic rotary drilling in ground investigation, Proceedings of 42nd U.S. Rock Mechanics Symposium and 2nd U.S.-Canada Rock Mechanics Symposium, June 29 – July 2, 2008, San Francisco, CA, USA. . USA, ARMA, 2008, ARMA 08-218.

 

Gao W., Chen J. and Yue Q.Z.Q., Identification of geological interfaces from drilling process monitoring in ground investigation, Boundaries of Rock Mechanics (Proceedings of the International Yong Scholars’ Symposium on Rock Mechanics), Editors: Meifeng Cai and Jin’an Wang, April 28 – May 2, 2008, Beijing, China. London, Taylor & Francis, 2008, 7-12.

 

Hui D.T.W., Shum K.K.Y., Chen J., Chen S.-.Y., Ritchie J. and Roads J.O., Case studies of seasonal rainfall forecasts for Hong Kong and its vicinity using a regional climate model, Natural Hazards. Springer, 2007, 42: 193-207.

 

Wu Y., Chen J. and Jayawardena A.W., Establishing a physically-based representation of groundwater re-evaporation parameter in SWAT, In: Les Oxley and Don Kulasiri, MODSIM07 International Congress on Modelling and Simulation. 2007, 1423-1428.

 

Wu Y., Chen J. and Sivakumar B., Numerical Modeling of Operation and Hydrologic Effects of Xinfengjiang Reservoir in Southern China, In: Les Oxley and Don Kulasiri, MODSIM07 International Congress on Modelling and Simulation. 2007, 1561-1567.

 

Young B. and Chen J., Cold-formed Steel Built-up Closed Sections with Intermediate Stiffeners, (Keynote Paper), Proceedings of the 9th International Conference on Steel, Space and Composite Structures. 2007, 43-53.

 

Young B. and Chen J., Design of Cold-formed Steel Built-up Closed Sections with Intermediate Stiffeners, Journal of Structural Engineering. ASCE, 2008, 134: 727-737.

 

Yue Q.Z.Q., Chen J. and Gao W., An innovative approach combining geological mapping and drilling process monitoring for quantitative assessment of natural terrain hazards, Proc. Of the 10th International Symposium on Landslides and Engineered Slopes, June 30 uly 4, 2008, Xi’an, China. Taylor & Francis Group, 2008, 535-541.

 

Researcher : Chen J

List of Research Outputs

 

Chen J. and Chan F.P., A preliminary drought mitigation plan for Hong Kong, In: Les Oxley and Don Kulasiri, MODSIM07 International Congress on Modelling and Simulation. 2007, 1492-1498.

 

Chen J., Gao W. and Yue Q.Z.Q., Case study of drilling process monitoring from two adjacent holes with two drills, Proceedings of 42nd U.S. Rock Mechanics Symposium and 2nd U.S.-Canada Rock Mechanics Symposium, June 29 – July 2, 2008, San Francisco, CA, USA. . ASCE, 2008, ARMA 08-219.

 

Chen J. and Young B., Cold-formed Steel Lipped Channel Columns at Elevated Temperatures, Engineering Structures. ELSEVIER, 2007, 29: 2445-2456.

 

Chen J. and Young B., Design of High Strength Steel Columns at Elevated Temperatures, Journal of Constructional Steel Research. ELSEVIER, 2008, 64: 689-703.

 

Chen J., Gao W. and Yue Q.Z.Q., Detection of thin weak zone in weatherrd rocks from automatic monitoring of pneumatic rotary-percussive drilling, In: Meifeng Cai and Jin’an Wang, Boundaries of Rock Mechanics (Proceedings of the International Yong Scholars’ Symposium on Rock Mechanics), April 28 – May 2, 2008, Beijing, China. London, Taylor & Francis Group, 2008, 53-58.

 

Chen J., Zhang R. and Chan S.N., Drought and water resources security of the East River (Dongjiang) basin, the 7th Shenzhen, Hong Kong, Zhuhai and Macao seminar on Water Supply. 2007, 45-53.

 

Chen J. and Wu Y., Exploring hydrological process features of the East River (Dongjiang) basin in South China using VIC and SWAT, In: Xiaohong Chen, Yongqin David Chen, Jun Xia and Hailun Zhang, the IAHS Red Books. Oxford, UK, IAHS Press, 2008, 319: 116-123.

 

Chen J., Lee P., Niu J. and Wu Y., Simple equations for evaluating rainwater collection capcity in Hong Kong at different temporal scales, the 7th Shenzhen, Hong Kong, Zhuhai and Macao seminar on Water Supply. 2007, 242-247.

 

Chen J. and Chan S.N., Water resources sustainability in the East River in South China using Water Rights Analysis Package, In: Les Oxley and Don Kulasiri, MODSIM07 International Congress on Modelling and Simulation. 2007, 1985-1991.

 

Cui W.Z., Chen J., Wu Y. and Wu Y.D., An overview of water resources management of the Pearl River, In: Gustaf Olsson, Professor Emeritus, Lund University, Sweden, Water Science and Technology: Water Supply. IWA Publishing, 2007, 7: 101-113.

 

Fang H.H.P., Zhang M., Zhang T. and Chen J., Predictions of nitrate diffusion in sediment using horizontal attenuated total reflection (HATR) by Fourier transform infrared (FTIR) spectrometry, Water Research. 2008, 42: 903-908.

 

Gao W., Chen J. and Yue Q.Z.Q., Characterization of cavities in marble from automatic monitoring of hydraulic rotary drilling in ground investigation, Proceedings of 42nd U.S. Rock Mechanics Symposium and 2nd U.S.-Canada Rock Mechanics Symposium, June 29 – July 2, 2008, San Francisco, CA, USA. . USA, ARMA, 2008, ARMA 08-218.

 

Gao W., Chen J. and Yue Q.Z.Q., Identification of geological interfaces from drilling process monitoring in ground investigation, Boundaries of Rock Mechanics (Proceedings of the International Yong Scholars’ Symposium on Rock Mechanics), Editors: Meifeng Cai and Jin’an Wang, April 28 – May 2, 2008, Beijing, China. London, Taylor & Francis, 2008, 7-12.

 

Hui D.T.W., Shum K.K.Y., Chen J., Chen S.-.Y., Ritchie J. and Roads J.O., Case studies of seasonal rainfall forecasts for Hong Kong and its vicinity using a regional climate model, Natural Hazards. Springer, 2007, 42: 193-207.

 

Wu Y., Chen J. and Jayawardena A.W., Establishing a physically-based representation of groundwater re-evaporation parameter in SWAT, In: Les Oxley and Don Kulasiri, MODSIM07 International Congress on Modelling and Simulation. 2007, 1423-1428.

 

Wu Y., Chen J. and Sivakumar B., Numerical Modeling of Operation and Hydrologic Effects of Xinfengjiang Reservoir in Southern China, In: Les Oxley and Don Kulasiri, MODSIM07 International Congress on Modelling and Simulation. 2007, 1561-1567.

 

Young B. and Chen J., Cold-formed Steel Built-up Closed Sections with Intermediate Stiffeners, (Keynote Paper), Proceedings of the 9th International Conference on Steel, Space and Composite Structures. 2007, 43-53.

 

Young B. and Chen J., Design of Cold-formed Steel Built-up Closed Sections with Intermediate Stiffeners, Journal of Structural Engineering. ASCE, 2008, 134: 727-737.

 

Yue Q.Z.Q., Chen J. and Gao W., An innovative approach combining geological mapping and drilling process monitoring for quantitative assessment of natural terrain hazards, Proc. Of the 10th International Symposium on Landslides and Engineered Slopes, June 30 uly 4, 2008, Xi’an, China. Taylor & Francis Group, 2008, 535-541.

 

Researcher : Chen J

List of Research Outputs

 

Chen J. and Chan F.P., A preliminary drought mitigation plan for Hong Kong, In: Les Oxley and Don Kulasiri, MODSIM07 International Congress on Modelling and Simulation. 2007, 1492-1498.

 

Chen J., Gao W. and Yue Q.Z.Q., Case study of drilling process monitoring from two adjacent holes with two drills, Proceedings of 42nd U.S. Rock Mechanics Symposium and 2nd U.S.-Canada Rock Mechanics Symposium, June 29 – July 2, 2008, San Francisco, CA, USA. . ASCE, 2008, ARMA 08-219.

 

Chen J. and Young B., Cold-formed Steel Lipped Channel Columns at Elevated Temperatures, Engineering Structures. ELSEVIER, 2007, 29: 2445-2456.

 

Chen J. and Young B., Design of High Strength Steel Columns at Elevated Temperatures, Journal of Constructional Steel Research. ELSEVIER, 2008, 64: 689-703.

 

Chen J., Gao W. and Yue Q.Z.Q., Detection of thin weak zone in weatherrd rocks from automatic monitoring of pneumatic rotary-percussive drilling, In: Meifeng Cai and Jin’an Wang, Boundaries of Rock Mechanics (Proceedings of the International Yong Scholars’ Symposium on Rock Mechanics), April 28 – May 2, 2008, Beijing, China. London, Taylor & Francis Group, 2008, 53-58.

 

Chen J., Zhang R. and Chan S.N., Drought and water resources security of the East River (Dongjiang) basin, the 7th Shenzhen, Hong Kong, Zhuhai and Macao seminar on Water Supply. 2007, 45-53.

 

Chen J. and Wu Y., Exploring hydrological process features of the East River (Dongjiang) basin in South China using VIC and SWAT, In: Xiaohong Chen, Yongqin David Chen, Jun Xia and Hailun Zhang, the IAHS Red Books. Oxford, UK, IAHS Press, 2008, 319: 116-123.

 

Chen J., Lee P., Niu J. and Wu Y., Simple equations for evaluating rainwater collection capcity in Hong Kong at different temporal scales, the 7th Shenzhen, Hong Kong, Zhuhai and Macao seminar on Water Supply. 2007, 242-247.

 

Chen J. and Chan S.N., Water resources sustainability in the East River in South China using Water Rights Analysis Package, In: Les Oxley and Don Kulasiri, MODSIM07 International Congress on Modelling and Simulation. 2007, 1985-1991.

 

Cui W.Z., Chen J., Wu Y. and Wu Y.D., An overview of water resources management of the Pearl River, In: Gustaf Olsson, Professor Emeritus, Lund University, Sweden, Water Science and Technology: Water Supply. IWA Publishing, 2007, 7: 101-113.

 

Fang H.H.P., Zhang M., Zhang T. and Chen J., Predictions of nitrate diffusion in sediment using horizontal attenuated total reflection (HATR) by Fourier transform infrared (FTIR) spectrometry, Water Research. 2008, 42: 903-908.

 

Gao W., Chen J. and Yue Q.Z.Q., Characterization of cavities in marble from automatic monitoring of hydraulic rotary drilling in ground investigation, Proceedings of 42nd U.S. Rock Mechanics Symposium and 2nd U.S.-Canada Rock Mechanics Symposium, June 29 – July 2, 2008, San Francisco, CA, USA. . USA, ARMA, 2008, ARMA 08-218.

 

Gao W., Chen J. and Yue Q.Z.Q., Identification of geological interfaces from drilling process monitoring in ground investigation, Boundaries of Rock Mechanics (Proceedings of the International Yong Scholars’ Symposium on Rock Mechanics), Editors: Meifeng Cai and Jin’an Wang, April 28 – May 2, 2008, Beijing, China. London, Taylor & Francis, 2008, 7-12.

 

Hui D.T.W., Shum K.K.Y., Chen J., Chen S.-.Y., Ritchie J. and Roads J.O., Case studies of seasonal rainfall forecasts for Hong Kong and its vicinity using a regional climate model, Natural Hazards. Springer, 2007, 42: 193-207.

 

Wu Y., Chen J. and Jayawardena A.W., Establishing a physically-based representation of groundwater re-evaporation parameter in SWAT, In: Les Oxley and Don Kulasiri, MODSIM07 International Congress on Modelling and Simulation. 2007, 1423-1428.

 

Wu Y., Chen J. and Sivakumar B., Numerical Modeling of Operation and Hydrologic Effects of Xinfengjiang Reservoir in Southern China, In: Les Oxley and Don Kulasiri, MODSIM07 International Congress on Modelling and Simulation. 2007, 1561-1567.

 

Young B. and Chen J., Cold-formed Steel Built-up Closed Sections with Intermediate Stiffeners, (Keynote Paper), Proceedings of the 9th International Conference on Steel, Space and Composite Structures. 2007, 43-53.

 

Young B. and Chen J., Design of Cold-formed Steel Built-up Closed Sections with Intermediate Stiffeners, Journal of Structural Engineering. ASCE, 2008, 134: 727-737.

 

Yue Q.Z.Q., Chen J. and Gao W., An innovative approach combining geological mapping and drilling process monitoring for quantitative assessment of natural terrain hazards, Proc. Of the 10th International Symposium on Landslides and Engineered Slopes, June 30 uly 4, 2008, Xi’an, China. Taylor & Francis Group, 2008, 535-541.

 

Researcher : Chen W

List of Research Outputs

 

Chen W., Wong S.C. and Shu C.W., Efficient implementation of the shock-fitting algorithm for the Lighthill-Whitham-Richards traffic flow model, International Journal for Numerical Methods in Engineering. Chichester, England, Wiley, 2008, 74: 554-600.

 

Lo S.H., Wu Z., Cheung Y.K. and Chen W., An enhanced global-local higher order theory for the free edge effect in laminates, Composite Structures. 2007, 81(4): 499-510.

 

Lu Y., Wong S.C., Zhang M., Shu C.W. and Chen W., Explicit construction of entropy solutions for the Lighthill-Whitham-Richards traffic flow model with a piecewise quadratic flow-density relationship, Transportation Research Part B. New York, Elsevier Science Ltd., 2008, 42: 355-372.

 

Wang X., Chen W. and Li X.Y., Membrane bioreactor (MBR) for an innovative biological nitrogen removal process, The 6th International Membrane Science and Technology Conference (IMSTEC), Sydney, Australia. Sydney, Australia, 2007.

 

Wu Z., Cheung Y.K., Lo S.H. and Chen W., Effects of higher-order global-local shear deformations on bending, vibration and buckling of multilayered plates, Journal of Composite Structures. 2008, 82(2): 277-289.

 

Wu Z., Cheung Y.K., Lo S.H. and Chen W., Thermal stress analysis for laminated plates using actual temperature field, International journal of mechanical sciences, NOV 2007. 2007, 49(11): 1276-1288.

 

Researcher : Chen W

List of Research Outputs

 

Chen W., Wong S.C. and Shu C.W., Efficient implementation of the shock-fitting algorithm for the Lighthill-Whitham-Richards traffic flow model, International Journal for Numerical Methods in Engineering. Chichester, England, Wiley, 2008, 74: 554-600.

 

Lo S.H., Wu Z., Cheung Y.K. and Chen W., An enhanced global-local higher order theory for the free edge effect in laminates, Composite Structures. 2007, 81(4): 499-510.

 

Lu Y., Wong S.C., Zhang M., Shu C.W. and Chen W., Explicit construction of entropy solutions for the Lighthill-Whitham-Richards traffic flow model with a piecewise quadratic flow-density relationship, Transportation Research Part B. New York, Elsevier Science Ltd., 2008, 42: 355-372.

 

Wang X., Chen W. and Li X.Y., Membrane bioreactor (MBR) for an innovative biological nitrogen removal process, The 6th International Membrane Science and Technology Conference (IMSTEC), Sydney, Australia. Sydney, Australia, 2007.

 

Wu Z., Cheung Y.K., Lo S.H. and Chen W., Effects of higher-order global-local shear deformations on bending, vibration and buckling of multilayered plates, Journal of Composite Structures. 2008, 82(2): 277-289.

 

Wu Z., Cheung Y.K., Lo S.H. and Chen W., Thermal stress analysis for laminated plates using actual temperature field, International journal of mechanical sciences, NOV 2007. 2007, 49(11): 1276-1288.

 

Researcher : Chen W

List of Research Outputs

 

Chen W., Wong S.C. and Shu C.W., Efficient implementation of the shock-fitting algorithm for the Lighthill-Whitham-Richards traffic flow model, International Journal for Numerical Methods in Engineering. Chichester, England, Wiley, 2008, 74: 554-600.

 

Lo S.H., Wu Z., Cheung Y.K. and Chen W., An enhanced global-local higher order theory for the free edge effect in laminates, Composite Structures. 2007, 81(4): 499-510.

 

Lu Y., Wong S.C., Zhang M., Shu C.W. and Chen W., Explicit construction of entropy solutions for the Lighthill-Whitham-Richards traffic flow model with a piecewise quadratic flow-density relationship, Transportation Research Part B. New York, Elsevier Science Ltd., 2008, 42: 355-372.

 

Wang X., Chen W. and Li X.Y., Membrane bioreactor (MBR) for an innovative biological nitrogen removal process, The 6th International Membrane Science and Technology Conference (IMSTEC), Sydney, Australia. Sydney, Australia, 2007.

 

Wu Z., Cheung Y.K., Lo S.H. and Chen W., Effects of higher-order global-local shear deformations on bending, vibration and buckling of multilayered plates, Journal of Composite Structures. 2008, 82(2): 277-289.

 

Wu Z., Cheung Y.K., Lo S.H. and Chen W., Thermal stress analysis for laminated plates using actual temperature field, International journal of mechanical sciences, NOV 2007. 2007, 49(11): 1276-1288.

 

Researcher : Cheng B

List of Research Outputs

 

Su K.L. and Cheng B., Design guidelines for plate-reinforced composite coupling beams, The 4th International Conference on Advances in Structural Engineering and Mechanics, 26-28 May 2008, Jeju, Korea. Korea, Techno-Press, 2008, 2340-2356.

 

Researcher : Cheng TYW

List of Research Outputs

 

Cheng T.Y.W., Soo K.L., Kumaraswamy M.M. and Wu J., Are there ways to ensure fair and prompt payment?, Lighthouse Club Conference on “Security of Payment in the Construction Industry”, 21 Nov. 2007. Hong Kong, Lighthouse Club, 2007, 1-14.

 

Researcher : Cheuk JCY

List of Research Outputs

 

Bruton D.A.S., White D.J., Carr M. and Cheuk J.C.Y., Pipe-soil interaction during lateral buckling and pipeline walking - the SAFEBUCK JIP, Offshore Technology Conference, OTC 2008. Paper OTC19589.

 

Cheuk J.C.Y. and White D.J., Centrifuge modelling of pipe penetration due to dynamic lay effects, The ASME 27th International Conference on Offshore Mechanics and Arctic Engineering, OMAE2008. OMAE2008-57923.

 

Cheuk J.C.Y., Geotechnical Challenges in Offshore Pipeline Engineering, South China University of Technology. 2008.

 

Cheuk J.C.Y., White D.J. and Bolton M.D., Large-scale modelling of soil-pipe interaction during large amplitude cyclic movements of partially embedded pipelines, Canadian Geotechnical Journal. 2007, 44: 977-996.

 

Cheuk J.C.Y., White D.J. and Bolton M.D., R.M. Quigley Honorable Mention for 2007 for the paper "Large-scale modelling of soil–pipe interaction during large amplitude cyclic movements of partially embedded pipelines" published in Canadian Geotechnical Journal, Canadian Geotechnical Society. 2007.

 

Cheuk J.C.Y., White D.J. and Bolton M.D., Reply to the discussion by MaCarron on "Large-scale modelling of soil-pipe interaction during large amplitude cyclic movements of partially embedded pipelines, Canadian Geotechnical Journal. 2008, 45: 744-749.

 

Cheuk J.C.Y., White D.J. and Bolton M.D., Uplift mechanisms of pipes buried in sand, Journal of Geotechnical and Geoenvironmental Engineering, ASCE. 2008, 134: 154-163.

 

Cheuk J.C.Y., White D.J. and Dingle H.R.C., Upper bound plasticity analysis of a partially-embedded pipe under combined vertical and horizontal loading, Soils and foundations. 2008, 48: 133-140.

 

Lee Y.S., Smith C.C. and Cheuk J.C.Y., Bearing capacity of embedded foundations, The 2nd BGA International Conference on Foundations, ICOF2008. 961-971.

 

White D.J. and Cheuk J.C.Y., Modelling the soil resistance on seabed pipelines during large cycles of lateral movement, Marine Structures. 2008, 21: 59-79.

 

Researcher : Cheung YK

List of Research Outputs

 

Cheung Y.K., Au F.T.K. and Young B., Numerical and Experimental Investigation of Thin-Walled Structures, (Keynote Paper), In: M Mahendran, Proceedings of Fifth International Conference on Thin-Walled Structures, Brisbane, Australia, 18-20 June 2008. Brisbane, Australia, Queensland University of Technology, 1: 29-40.

 

Cheung Y.K., Tham L.G. and Au F.T.K., Some Aspects of the Development of Structural Engineering and Computational Mechanics in Mainland China and Hong Kong, Invited Paper, Proceedings of The Institution of Structural Engineers’ Centenary Conference – ‘Turning Ideas into Reality’” 24-26 January 2008, Hong Kong. London, UK, The Institution of Structural Engineers, 2008, 56-67.

 

Du J.S., Au F.T.K., Cheung Y.K. and Kwan A.K.H., Ductility analysis of prestressed concrete beams with unbonded tendons, Engineering Structures. New York, ScienceDirect, 2008, 30 (1): 13-21.

 

Lo S.H., Wu Z., Cheung Y.K. and Chen W., An enhanced global-local higher order theory for the free edge effect in laminates, Composite Structures. 2007, 81(4): 499-510.

 

Ng T.S.T., Xie J. and Cheung Y.K., A fuzzy simulation model for evaluating the concession items of public-private partnerships schemes, Automation in Construction. Amsterdam, Holland, Elsevier, 2007, 17(1): 22-29.

 

Ng T.S.T., Xie J., Cheung Y.K. and Jefferies M., A simulation model for optimizing the concession period of public-private partnerships schemes, International Journal of Project Management. Exeter, UK, Elsevier Science Ltd., 2007, 25(8): 791-798.

 

Tong Z.H., Lo S.H., Jiang C. and Cheung Y.K., An exact solution for the three-phase thermo-electro-magneto-elastic cylinder model and its application to piezoelectric-magnetic fiber composites, International Journal of Solids and Structures. 2008, available online.

 

Wu Z., Cheung Y.K., Lo S.H. and Chen W., Effects of higher-order global-local shear deformations on bending, vibration and buckling of multilayered plates, Journal of Composite Structures. 2008, 82(2): 277-289.

 

Wu Z., Cheung Y.K., Lo S.H. and Chen W., Thermal stress analysis for laminated plates using actual temperature field, International journal of mechanical sciences, NOV 2007. 2007, 49(11): 1276-1288.

 

Researcher : Chi S

List of Research Outputs

 

Chi S., Guo X., Yang J. and Lin G., Study on small strain characteristics and threshold strain of dynamic Hardin-Drnevich model for soils, Chinese Journal of Geotechnical Engineering. 2008, 30(2): 243-249.

 

Researcher : Choi DKW

List of Research Outputs

 

Choi D.K.W. and Lee J.H.W., Distributed entrainment sink approach for modelling mixing and transport in intermediate field, Journal of Hydraulic Engineering, ASCE. New York, N.Y., American Society of Civil Engineers, 2007, 133(7): 804-815.

 

Choi D.K.W. and Lee J.H.W., Post-operation impact assessment of the Harbour Area Treatment Scheme, Hong Kong, Fifth International Symposium on Environmental Hydraulics (ISEH V). Arizona, USA, 2007, CD-ROM.

 

Lee J.H.W., Yu D., Wong C.K.C. and Choi D.K.W., Drainage Improvement in Northern Hong Kong Island Hong Kong West Tunnel and Lower Catchment Improvement – Investigation: Additional Model Testing of Intake Model – Part A. Lateral Inflow Structure, Part B. M3 Intake, 2008.

 

Researcher : Choi YL

Project Title:

Theory of R.C. failure under a small vibrating load

Investigator(s):

Choi YL

Department:

Civil Engineering

Source(s) of Funding:

Other Funding Scheme

Start Date:

07/1998

 

Abstract:

To develop a theory to explain this new failure mechanisms and predict the failure conditions; to develop practical applications.

 

Researcher : Chong C

List of Research Outputs

 

Yeung A.T. and Chong C., Tensile characteristics of cured-in-place pipe (CIPP) material, Proc., Trenchless Technologies in Asia Pacific (Macau) 2007 - Challenges in Rapidly Growing Cities, Macau. 2007.

 

Researcher : Chu HP

List of Research Outputs

 

Li X.Y., Zhai X., Chu H.P. and Zhang J., Characterization of flocculation dynamics from the evolution of particle size distributions, J. Environmental Engineering – ASCE. 2008, 134: 369-375.

 

Researcher : Chung KHJ

List of Research Outputs

 

Chung K.H.J., Kumaraswamy M.M. and Ekambaram P., Exploring the use of ICT to capture client requirements in construction briefing, In: Y. Nielsen, 5th International Conference on Innovation in Architecture, Engineering and Construction (AEC2008), 25-28 June 2008. Antalya, Turkey. Turkey, Middle East Technical University, Turkey, 2008, 1-13.

 

Kumaraswamy M.M., Mahesh G., Anvuur A.M. and Chung K.H.J., Targeting truly Integrated ‘Value Networks’ for PPPs, In: Y. Nielsen, 5th International Conference on Innovation in Architecture, Engineering and Construction (AEC2008), 25-28 June 2008. Antalya, Turkey, Middle East Technical University, Turkey . Turkey, Middle East Technical University, Turkey, 2008, 1-11.

 

Researcher : Cui Y

List of Research Outputs

 

Chan G.K.Y., Wang Y., Wang B., Cui Y. and Li X.Y., Efficient Electrochemical Generation of Ozone from Water with a Novel Electrode Material, Proceedings of 2007 American Institute of Chemical Engineers (AIChE) Annual Meeting, Salt Lake City, Utah, U.S.A., November 4-9,. 2007.

 

Chan G.K.Y., Chan C.Y., Cui Y., Wang Y., Wang B., Li X.Y., Lin W. and Christensen P.A., Efficient Electrolytic Generation of Ozone from Water with a Novel Electrode Material, Proceedings of 2007 World Congress on Ozone and Ultraviolet Technologies (IUVA), Los Angeles, California, U.S.A., August 27-29, . 2007.

 

Chan G.K.Y., Wang Y., Wang B. and Cui Y., Methanol Oxidation on Platinum Nanoparticles Supports on Well Defined Mesoporous Carbons , Keynote Lecture at 2007 American Institute of Chemical Engineers (AIChE) Annual Meeting, Salt Lake City, Utah, U.S.A., November 4-9, 2007. 2007.

 

Researcher : Du J

List of Research Outputs

 

Ng P.L., Lam Y.K., Du J., Su K.L. and Fung W.S., Adaptive constrained mesh refinement for planar finite element analysis, The 4th International Conference on Advances in Structural Engineering and Mechanics, 26-28 May 2008, Jeju, Korea. Korea, Techno-Press, 2008, p3085-3097.

 

Researcher : Ekambaram P

Project Title:

A pilot study on establishing knowledge based rework tracking-cum-management systems for effective management of construction projects

Investigator(s):

Ekambaram P, Kumaraswamy MM, Ng TST

Department:

Civil Engineering

Source(s) of Funding:

Seed Funding Programme for Basic Research

Start Date:

07/2004

 

Abstract:

To identify the significant rework items in the Hong Kong construction industry at present and to categorize them meaningfully for effective management; to identify the root causes of those significant rework items, for developing a structured rework tracing methodology; to study various research initatives, industry wide practices and innovative approaches for developing a knowledgebase on effective rework control and management; to develop some sample structured-cum-standardized frameworks for tracing and quantifying/measuring the major rework items; to develop a pilot prototype rework tracking system for effective rework control and management; to develop a research proposal for a large scale integrated study encompassing the broader aspects of controlling and managing defects, wastages and rework in construction projects.

 

List of Research Outputs

 

Chung K.H.J., Kumaraswamy M.M. and Ekambaram P., Exploring the use of ICT to capture client requirements in construction briefing, In: Y. Nielsen, 5th International Conference on Innovation in Architecture, Engineering and Construction (AEC2008), 25-28 June 2008. Antalya, Turkey. Turkey, Middle East Technical University, Turkey, 2008, 1-13.

 

Ekambaram P. and Kumaraswamy M.M., An integrated Decision Support System for dealing with Time Extension Entitlements, Automation in Construction. Oxford, UK, Elsevier, 2008, Vol. 17, Issue 4,: 425 – 438.

 

Ekambaram P., Kumaraswamy M.M., Ng T.S.T. and Lam K.C., Reinforcing Lowest Price-based Contractor Selections - a Re-invention perspective, In: K. London, G. Thayarapan and J. Chen, CIB W092 Procurement Systems Conference on ‘Building across Borders’. Newcastle, Australia, CIB & University of Newcastle, 2007, 192-200.

 

Kumaraswamy M.M., Rahman M.M., Ekambaram P., Ugwu O.O., Anvuur A.M. and Yogeswaran K., Multi-Disciplinary and Multi-Functional Teams in PPP Procurement & Delivery, In: K. London, G. Thayarapan and J. Chen, CIB W092 Procurement Systems Conference on ‘Building across Borders’. Newcastle, Australia, CIB and University of Newcastle, 2007, 250-262.

 

Researcher : Fan YC

List of Research Outputs

 

Fan Y.C., Ng T.S.T. and Wong J.M.W., A study of forecasting the Hong Kong construction demand, In: W. Hughes, Proceedings: Construction Management and Economics 25th Anniversary Conference, July 16-18, University of Reading, Reading, UK. 2007, 12 pages.

 

Ng T.S.T., Chan A.P.C., Wong J.M.W., Chiang Y.H., Hui E.C.M., Kumaraswamy M.M. and Fan Y.C., Development Strategy for Professional Resources of Hong Kong’s Construction and Related Engineering Services Sector – Interim Report, A Report Submitted to the Development Bureau, Government of HKSAR. 2008, 202 pages.

 

Researcher : Fang HHP

Project Title:

Biodegradation of endocrine disrupters in landfill leachate

Investigator(s):

Fang HHP

Department:

Civil Engineering

Source(s) of Funding:

Competitive Earmarked Research Grants (CERG)

Start Date:

12/2003

 

Abstract:

To determine the optimal process conditions for the anaerobic degradation of DEHP and BPA; to determine effects of hydraulic retention, co-substrate, sorption of extracellular polymers on the biodegradation of DEHP and BPA; to analyze the microbial population using the DNA/RNA based techniques, and to characterize microbes responsible to the DEHP and BPA degradation.

 

Project Title:

Photo-biohydrogen production from acidified wastewater

Investigator(s):

Fang HHP

Department:

Civil Engineering

Source(s) of Funding:

Competitive Earmarked Research Grants (CERG)

Start Date:

01/2005

 

Abstract:

To develop an effective photo-bioreactor system; to determine the optimal operational conditions for the selected pure phototrophs and for mixed cultures; to develop the two-stage process by integrating acidogenic and phototrophic processes; to correlate the reactor performance to the microbial population and characteristics in the photo-bioreactors using 16S rDNA/RNA-based techniques.

 

Project Title:

Sustainable Water

Investigator(s):

Fang HHP, Chan GKY, Li XY, Lee JHW, Dudgeon D, Jayawardena AW

Department:

Civil Engineering

Source(s) of Funding:

Seed Funding for Strategic Research Theme

Start Date:

08/2005

 

Abstract:

To develop at HKU a center with international reputation on sustainable water. The center will promote inter-disciplinary collaborative research. It will concentrate not just on the research and development of sustainable-water related technology, but will also assist the HK Government in decision making of water-related issues.

 

Project Title:

Immobilization of acidogenic biomass for hydrogen production from wastewater

Investigator(s):

Fang HHP, Zhang T

Department:

Civil Engineering

Source(s) of Funding:

Competitive Earmarked Research Grants (CERG)

Start Date:

01/2006

 

Abstract:

The main objectives of this project are (1) To improve the acidogenic hydrogen production efficiency and process stability using the biomass immobilization technology; (2) To develop polymeric pellets of optimal physico-chemical stability for biomass immobilization; (b) To characterize substrate diffusivity in polymer pellets, and hydrogen-producing activity of immobilized biomass; (c) To determine effects of operational conditions on biohydrogen production rates; (d) To correlate characteristics immobilized biomass with the biohydrogen production activities; and (e) To evaluate the response of immobilized biomass against concentration, temperature and pH shock.

 

List of Research Outputs

 

Fang H.H.P., Zhang M., Zhang T. and Chen J., Predictions of nitrate diffusion in sediment using horizontal attenuated total reflection (HATR) by Fourier transform infrared (FTIR) spectrometry, Water Research. 2008, 42: 903-908.

 

Li C., Zhang T. and Fang H.H.P., Use of TaqMan gene probe for real-time monitoring of acidophilic hydrogen-producing bacteria, Biotechnology Letters. 2007, 29: 1753-1757.

 

Li R., Zhang T. and Fang H.H.P., Characteristics of a phototrophic sludge producing hydrogen from acetate and butyrate., International Journal of Hydrogen Energy.. 2008, 33.

 

Mei L., Fang H.H.P., Zhang T., Jin L.J. and Yip H.K., The use of chlorhexidine in reducing the cariogenicity of oral microbial biofilm with caries free and high risk of caries. , the Inaugural Conjoint Dental Scientific Meeting The University of Hong Kong and Wuhan University.. China, 2008, 38.

 

Zhang T., Qin X. and Fang H.H.P., Use of P-17 and NOX specific primer sets for assimilable organic carbon (AOC) measurements, Water Supply. 2007, 7: 157-163.

 

Zhu H.G., Fang H.H.P., Zhang T. and Beaudatte L.A., Effect of ferrous ion on photo heterotrophic hydrogen production by Rhodobacter sphaeroides, International Journal of Hydrogen Energy. 2007, 32: 4112-4118.

 

Researcher : Fang Y

List of Research Outputs

 

Fang Y. and Ng T.S.T., Analysis of resource acquisition cost for construction project logistics, In: W. Hughes, Proceedings: Construction Management and Economics 25th Anniversary Conference, July 16-18, University of Reading, Reading, UK. 2007, 8 pages.

 

Fang Y. and Ng T.S.T., CIOB Best Paper in Project Management, 8th International Postgraduate Research Conference (Title of Paper: Optimisation of time and cost in construction logistics), Chartered Institute of Building. 2008.

 

Fang Y. and Ng T.S.T., Optimising Time and Cost in Construction Material Logistics, In: D. Eaton, L. Ruddock, V. Ahmed, G. Aouad & Z. Bittnar , Proceedings: BuHu 8th International Postgraduate Research Conference, June 26- 27, The Czech Technical University of Prague, Czech Republic. 2008, 9 pages.

 

Ng T.S.T., Fang Y. and Ugwu O.O., Modeling construction material logistics system with stochastic Petri nets, Construction Innovation – Information, Process, Management. Bingley, UK, Emerald, 2008, 8(1): 46-60.

 

Researcher : Feng R

List of Research Outputs

 

Feng R. and Young B., Tests of Cold-formed Stainless Steel Tubular T-joints, Proceedings of the 9th International Conference on Steel, Space and Composite Structures. 2007, 277-284.

 

Feng R. and Young B., Tests of Concrete-filled Stainless Steel Tubular T-joints, Proceedings of the 3rd International Experts Seminar on Stainless Steel in Structures. 2007.

 

Feng R. and Young B., Tests of T-joints in RHS and SHS High Strength Stainless Steel Tubes, Proceedings of the 5th International Conference on Advances in Steel Structures. 2007, 571-578.

 

Lim J.B.P., Young B. and Feng R., Ultimate Bearing Shear Strength of Cold-formed Steel Members using Bolted Connections at Elevated Temperatures, Proceedings of the 5th International Conference on Advances in Steel Structures. 2007, 718-725.

 

Researcher : Feng W

List of Research Outputs

 

Su K.L. and Feng W., Fracture behavior of a bonded magneto-electro-elastic rectangular plate with an interface crack, Archive of Applied Mechanics. New York, USA, Springer, 2008, 78(5): 343-362.

 

Researcher : Fok L

List of Research Outputs

 

Fan K.W., Fok L., Lee J.H.W. and Chen S.F., Epilithic diatom as a biological indicator for the assessment of water quality in the East River, Water Science & Technology: Water Supply. 2008, 7(2): 147-155.

 

Researcher : Fong HY

List of Research Outputs

 

Tsang H.H., Fong H.Y., Xu X. and Lo S.H., Utilization of Scrap Tires for Earthquake Hazard Mitigation, Ninth International Symposium on Environmental Geotechnology and Global Sustainable Development. 2008.

 

Researcher : Fung WS

List of Research Outputs

 

Ng P.L., Lam Y.K., Du J., Su K.L. and Fung W.S., Adaptive constrained mesh refinement for planar finite element analysis, The 4th International Conference on Advances in Structural Engineering and Mechanics, 26-28 May 2008, Jeju, Korea. Korea, Techno-Press, 2008, p3085-3097.

 

Researcher : Gao W

List of Research Outputs

 

Chen J., Gao W. and Yue Q.Z.Q., Case study of drilling process monitoring from two adjacent holes with two drills, Proceedings of 42nd U.S. Rock Mechanics Symposium and 2nd U.S.-Canada Rock Mechanics Symposium, June 29 – July 2, 2008, San Francisco, CA, USA. . ASCE, 2008, ARMA 08-219.

 

Chen J., Gao W. and Yue Q.Z.Q., Detection of thin weak zone in weatherrd rocks from automatic monitoring of pneumatic rotary-percussive drilling, In: Meifeng Cai and Jin’an Wang, Boundaries of Rock Mechanics (Proceedings of the International Yong Scholars’ Symposium on Rock Mechanics), April 28 – May 2, 2008, Beijing, China. London, Taylor & Francis Group, 2008, 53-58.

 

Gao W., Chen J. and Yue Q.Z.Q., Characterization of cavities in marble from automatic monitoring of hydraulic rotary drilling in ground investigation, Proceedings of 42nd U.S. Rock Mechanics Symposium and 2nd U.S.-Canada Rock Mechanics Symposium, June 29 – July 2, 2008, San Francisco, CA, USA. . USA, ARMA, 2008, ARMA 08-218.

 

Gao W., Chen J. and Yue Q.Z.Q., Identification of geological interfaces from drilling process monitoring in ground investigation, Boundaries of Rock Mechanics (Proceedings of the International Yong Scholars’ Symposium on Rock Mechanics), Editors: Meifeng Cai and Jin’an Wang, April 28 – May 2, 2008, Beijing, China. London, Taylor & Francis, 2008, 7-12.

 

Yue Q.Z.Q., Chen J. and Gao W., An innovative approach combining geological mapping and drilling process monitoring for quantitative assessment of natural terrain hazards, Proc. Of the 10th International Symposium on Landslides and Engineered Slopes, June 30 uly 4, 2008, Xi’an, China. Taylor & Francis Group, 2008, 535-541.

 

Researcher : Guo X

List of Research Outputs

 

Chi S., Guo X., Yang J. and Lin G., Study on small strain characteristics and threshold strain of dynamic Hardin-Drnevich model for soils, Chinese Journal of Geotechnical Engineering. 2008, 30(2): 243-249.

 

Researcher : Han X

List of Research Outputs

 

Kwong A.K.L., Han X. and So T.C., Constructional Aspect of Underwater Vacuum Preloading Technique, In: HKIE, HKIE Geotechnical Division Annual Seminar . 2008.

 

Kwong A.K.L., Han X., Lee C.F., Tham L.G., Lee P.K.K. and Zhao W.B., The application of automatic data collection and wireless transmission technique to the monitoring of geotechnical problems. , Journal of Sichuan University (Engineering Science Edition). . 四川大学学报（工程科学版）, 2007.

 

Kwong A.K.L., Han X., Tham L.G. and Zhao W.B., Variation law of pore water pressure in soil improved by underwater vacuum preloading method., 自动數据采集和无線傳輸技朮在岩土工程監測中的應用[J], In: Chen Sheng-shui, Chinese Journal of Geotechnical Engineering. 四川大学学報(工程科学版), Nanjing Hydraulic Research Institute, 2007, 30: 658-662.

 

Researcher : Ho HW

List of Research Outputs

 

Ho H.W., Wong S.C. and Hau T.D., A multi-class congestion pricing problem in a continuum transportation system, Journal of the Eastern Asia Society for Transportation Studies. Japan, Eastern Asia Society for Transportation Studies, 2007, 7: 238-253.

 

Ho H.W., Wong S.C. and Hau T.D., A multi-class congestion pricing problem in a continuum transportation system, Paper presented at the Seventh Conference of the Eastern Asia Society for Transportation Studies, 24-27 September, Dalian, China.. 2007.

 

Ho H.W., Wong S.C. and Hau T.D., Theoretical bounds of congestion-pricing efficiency for a continuum transportation system, In: R.E. Allsop, M.G.H. Bell and B.G. Heydecker, Transportation and Traffic Theory 2007. London, Elsevier Ltd., 2007, 263-280.

 

Researcher : Ho JCM

List of Research Outputs

 

Ho J.C.M., Limited Ductility Design and Critical Region Length of High-strength Reinforced Concrete Column, The South China University of Technology. 2007.

 

Researcher : Jayawardena AW

Project Title:

A hybrid approach for modelling and predicting non-linear hydrological/environmental systems

Investigator(s):

Jayawardena AW

Department:

Civil Engineering

Source(s) of Funding:

Small Project Funding

Start Date:

11/2002

 

Abstract:

To develop hybrid techniques by extracting the optimal features of know methods for modelling and predicting hydrological/environmental systems.

 

List of Research Outputs

 

Jayawardena A.W., Xu P. and Li W.K., A Method of Estimating the Noise Level in a Chaotic Time Series, Chaos. USA, American Institute of Physics, 2008, 18: 023115(1)-023115(11).

 

Sivakumar B., Jayawardena A.W. and Li W.K., Hydrologic Complexity and Classification: A Simple Data Reconstruction Approach, Hydrological Processes. John Wiley & Sons, 2007, 21: 2713-2728.

 

Wu Y., Chen J. and Jayawardena A.W., Establishing a physically-based representation of groundwater re-evaporation parameter in SWAT, In: Les Oxley and Don Kulasiri, MODSIM07 International Congress on Modelling and Simulation. 2007, 1423-1428.

 

Researcher : Jiang C

List of Research Outputs

 

Tong Z.H., Lo S.H., Jiang C. and Cheung Y.K., An exact solution for the three-phase thermo-electro-magneto-elastic cylinder model and its application to piezoelectric-magnetic fiber composites, International Journal of Solids and Structures. 2008, available online.

 

Researcher : Jiang R

List of Research Outputs

 

Au F.T.K., Jiang R., Leung C.C.Y., Xie L., Lee P.K.K., Wong K.Y. and Chan W.Y., Development and calibration of finite element models for structural health monitoring of Ting Kau Bridge, Invited Lecture, In: Y B Yang and J D Yau, Proceedings of International Symposium on Environmental Vibrations (ISEV 2007), Taipei, Taiwan, November 28-30, 2007. Taiwan, National Taiwan University, 559-566.

 

Researcher : Kumaraswamy MM

Project Title:

Transforming construction cultures to enable industry development

Investigator(s):

Kumaraswamy MM, Rowlinson SM, Ng TST

Department:

Civil Engineering

Source(s) of Funding:

Low Budget High Impact Programme

Start Date:

11/2001

 

Abstract:

To evaluate the levels of the desired ''cultural changes' actually achieved during the implementation of recent industry report recommendations in the UK, Australia and Singapore; to assess any correlations of these levels with any perceived performance gains (or otherwise).; to identify any lessons from the above that may be applicable to the forthcoming Hong Kong initiative, in terms of identifying effective and efficient routes to the required 'cultural revolution' that must necessarily underpin meaningful collaborative strategies at industry, organisational and project levels; to identify and other potential routes, through detailed analyses and specific local industry surveys; to evaluate the potential for specific strategies to help trigger the above 'cultural revolution', based on emerging results from relevant ongoing studies; i.e. strategies based on relational contracting, joint risk management and on project participant selection criteria that assign considerable weighting to performance and collaborative potential; to formulate a working framework and strategic guidelines for improved performance based on outputs from above.

 

Project Title:

Selecting, developing and synergising construction procurement and operational innovations

Investigator(s):

Kumaraswamy MM, Ng TST

Department:

Civil Engineering

Source(s) of Funding:

Competitive Earmarked Research Grants (CERG)

Start Date:

09/2002

 

Abstract:

This study is to design a Management Support System (MSS) for procurement and operational systems that will: 1) mobilise the knowledge-bases distilled from scattered experience, expertise and best practice innovations in such diverse fields ; and 2) provide guidance on the selection, development and integration of appropriate procurement and operational sub-systems for a particular project.

 

Project Title:

Leveraging logistical advantages through technology exchange in construction joint ventures

Investigator(s):

Kumaraswamy MM, Lo VHY, Ng TST

Department:

Civil Engineering

Source(s) of Funding:

Small Project Funding

Start Date:

11/2002

 

Abstract:

To investigate both enablers and barriers to: (a) achieving meaningful technology transfers within construction JVs, and (b) harnessing potential logistical advantages from appropriately pooled JV resources; to develop models and assess the potential for: (a) empowering TE through more meaningful integration of multiple capacities, and (b) thereby deriving critical logistical advantages.

 

Project Title:

"Public Private Partnerships" in infrastructure development

Investigator(s):

Kumaraswamy MM, Ng TST

Department:

Civil Engineering

Source(s) of Funding:

Seed Funding Programme for Basic Research

Start Date:

04/2004

 

Abstract:

To formulate the structure and sample modules of a PPP (Public Private Partnership) knowledge-base, for informing and advising those engaged in (or planning) PPPs: on obtaining better 'value for money' in the development and operation and maintenance of infrastructure; to map the function allocations (e.g. in design, supervision, contract management, construction and maintanence functions), supply chains and potential 'value networks' in typical PPP-procured infrastructure projects; and to track workflows and interface issues with a view to boosting overall value and efficiencies; to identify and develop relevant sets of essential factors, common barriers, performance criteria, performance enhancers and performance inhibitors: together with key indicators with which to monitor each of the foregoing.

 

Project Title:

'Relationally integrated value networks' for boosting construction industry developments

Investigator(s):

Kumaraswamy MM, Rowlinson SM, Ugwu OO

Department:

Civil Engineering

Source(s) of Funding:

Competitive Earmarked Research Grants (CERG)

Start Date:

01/2006

 

Abstract:

The objectives of this project are to: (1) verify the root causes of shortfalls in the envisaged gains in construction project, organisational and industry performance levels; (2) design a sound conceptual framework, realistic strategies and guidelines to supplant presently fragmented and sub-optimal approaches, by specifically: (2a) designing a suite of basic procurement structures to assemble roles, responsibilities and relationships - for fostering trust and optimising project value streams; (2b) developing core protocols for organisational learning, knowledge management and holistic technology transfers, including to SMEs in the value network; (2c) formulating evaluation tools for assessing gains e.g. in improved logistics, reduced wastage and optimised value-cost trade-offs.

 

List of Research Outputs

 

Cheng T.Y.W., Soo K.L., Kumaraswamy M.M. and Wu J., Are there ways to ensure fair and prompt payment?, Lighthouse Club Conference on “Security of Payment in the Construction Industry”, 21 Nov. 2007. Hong Kong, Lighthouse Club, 2007, 1-14.

 

Chung K.H.J., Kumaraswamy M.M. and Ekambaram P., Exploring the use of ICT to capture client requirements in construction briefing, In: Y. Nielsen, 5th International Conference on Innovation in Architecture, Engineering and Construction (AEC2008), 25-28 June 2008. Antalya, Turkey. Turkey, Middle East Technical University, Turkey, 2008, 1-13.

 

Ekambaram P. and Kumaraswamy M.M., An integrated Decision Support System for dealing with Time Extension Entitlements, Automation in Construction. Oxford, UK, Elsevier, 2008, Vol. 17, Issue 4,: 425 – 438.

 

Ekambaram P., Kumaraswamy M.M., Ng T.S.T. and Lam K.C., Reinforcing Lowest Price-based Contractor Selections - a Re-invention perspective, In: K. London, G. Thayarapan and J. Chen, CIB W092 Procurement Systems Conference on ‘Building across Borders’. Newcastle, Australia, CIB & University of Newcastle, 2007, 192-200.

 

Fan L.C.N. and Kumaraswamy M.M., Joint Editor, Journal of Building and Construction Management. Hong Kong, SAR, CIOB-HK, HKIE Building Div. and Asian Constr. Mgt. Assn., 2008, 8(1): 63 pp.

 

Kumaraswamy M.M., 2008 Award for Excellence as ‘Outstanding Reviewer' for the ‘Jnl. of Engineering, Construction & Architectural Management’, Emerald Literati Network. 2008.

 

Kumaraswamy M.M., Associate Editor and Assistant Specialty Editor, Journal of Construction Engineering and Management. Reston, USA, American Society of Civil Engineers, 2008.

 

Kumaraswamy M.M., Editorial Advisory Board Member, Engineering, Construction and Architectural Management. Bradford, UK, Emerald, 2007.

 

Kumaraswamy M.M., Editorial Board Member, electronic journal of 'Information Technology in Construction'. IT Con, 2008.

 

Kumaraswamy M.M., Ex-ante Frameworks for Disaster Mitigation, Keynote Paper published at Workshop on ‘International Technology and Knowledge Flows for Post Disaster Reconstruction’, Surabaya, Indonesia, sponsor: KNAW (Royal Netherlands Academy of Arts & Science), 8-10 January. Indonesia, ITS (Indonesia) & TU/e (Netherlands), 2008.

 

Kumaraswamy M.M., Member, Editorial Advisory Board, International Journal of Managing Projects in Business. UK, Emerald Group Publishing Ltd., 2008.

 

Kumaraswamy M.M., Member, Editorial Board, Automation in Construction. UK, Elsevier, 2007.

 

Kumaraswamy M.M., Rahman M.M., Ekambaram P., Ugwu O.O., Anvuur A.M. and Yogeswaran K., Multi-Disciplinary and Multi-Functional Teams in PPP Procurement & Delivery, In: K. London, G. Thayarapan and J. Chen, CIB W092 Procurement Systems Conference on ‘Building across Borders’. Newcastle, Australia, CIB and University of Newcastle, 2007, 250-262.

 

Kumaraswamy M.M. and Abeysekera V., Revisiting Terminology in Construction Project Management , In: Y.M. Xie and I. Patnaikuni, 4th International Structural Engineering & Construction Conference (ISEC-4) on ‘Innovations in Structural Engineering’. UK, Taylor & Francis, 2007, 2: 1459-1465.

 

Kumaraswamy M.M. and Anvuur A.M., Selecting Sustainable Teams for PPP projects, Building & Environment. UK, Elsevier, 2008, Vol. 43, Issue 6: 999-1009.

 

Kumaraswamy M.M., Mahesh G., Anvuur A.M. and Chung K.H.J., Targeting truly Integrated ‘Value Networks’ for PPPs, In: Y. Nielsen, 5th International Conference on Innovation in Architecture, Engineering and Construction (AEC2008), 25-28 June 2008. Antalya, Turkey, Middle East Technical University, Turkey . Turkey, Middle East Technical University, Turkey, 2008, 1-11.

 

Kumaraswamy M.M., ‘Engineering Overseas Visitor Programme Fellowship’, Engineering Faculty, The University of Hong Kong. 2008.

 

Lam P.T.I., Kumaraswamy M.M. and Ng T.S.T., A Generic Framework of Performance Specifications for Specialist Works, In: S.M. Ahmed, S. Azhar and S. Mohamed, 4th Intnl. Conf. on Construction in the 21st Century (CITC IV). Gold Coast, Australia, Griffith University and Florida International University, 2007, 350-357.

 

Mahesh G., Kumaraswamy M.M., Anvuur A.M. and Coffey V., Contracting for Community Development: a case study based perspective of a public sector client initiative in Hong Kong, In: S.M. Ahmed, S. Azhar and S. Mohamed, 4th Intnl. Conf. on Construction in the 21st Century (CITC IV). Gold Coast, Australia, Griffith University and Florida International University, 2007, 366-372.

 

Ng T.S.T., Chan A.P.C., Wong J.M.W., Chiang Y.H., Hui E.C.M. and Kumaraswamy M.M., Development Strategy for Professional Resources of Hong Kong’s Construction and Related Engineering Services Sector – Inception Report, A Report Submitted to the Development Bureau, Government of HKSAR. 2007, 30 pages.

 

Ng T.S.T., Chan A.P.C., Wong J.M.W., Chiang Y.H., Hui E.C.M., Kumaraswamy M.M. and Fan Y.C., Development Strategy for Professional Resources of Hong Kong’s Construction and Related Engineering Services Sector – Interim Report, A Report Submitted to the Development Bureau, Government of HKSAR. 2008, 202 pages.

 

Ng T.S.T., Lee C.F., Baldwin A.N., Chan A.P.C., Chiang Y.H., Kumaraswamy M.M., Lam P.T.I., Lee P.K.K. and Wong J.M.W., Reinventing the Hong Kong Construction Industry for its Sustainable Development – Final Report, A Report Submitted to the Construction Industry Institute – Hong Kong. 2007, 338 pages.

 

Rahman M.M. and Kumaraswamy M.M., Relational Contracting and Teambuilding: Assessing Potential Contractual and Non-Contractual Incentives, Journal of Management in Engineering. USA, ASCE (American Soc. of Civil Engineers), 2008, 24, No.1: 48–63.

 

Soo K.L., Kumaraswamy M.M. and Wu J., Contractor’s Right to Stop Work on Non-Payment: A Comparative Perspective from Hong Kong, In: R. Haigh and D. Amaratunga, CIB W89 ‘Building Education & Research’ Conference, BEAR 2008 on ‘Building Resilience’, Sri Lanka. UK, CIB and Univ. of Salford, 2008, 1263-1273.

 

Soo K.L., Kumaraswamy M.M., Ng T.S.T. and Ling F.Y.Y., Injecting Real-Life Law into Construction Education: Role-playing in Group Projects, In: R. Haigh and D. Amaratunga, CIB W89 ‘Building Education & Research’ Conference, BEAR 2008 on ‘Building Resilience’, Sri Lanka. UK, CIB and Univ. of Salford, 2008, 1176-1185.

 

Wan K.M. and Kumaraswamy M.M., Applying Industrial Management principles for improving Material Control practices in Building Services work, International Conference on Waste Engineering and Management, 28-30 May, Hong Kong, Canadian Society for Civil Engineering and The Hong Kong Instn. of Engineers. Hong Kong, e Hong Kong Instn. of Engineers, 2008, 1-12.

 

Wu J., Kumaraswamy M.M. and Soo K.L., Regulations affecting Construction Procurement in Mainland China, BuHu 8th International PGR Conference, June 26-27, Prague, . Czech Republic, Czech Technical University in Prague, 2008, 265-274.

 

Zhang Y., Ng T.S.T. and Kumaraswamy M.M., Applying ant colony system techniques to solve time-cost trade-off problems, In: W. Hughes, Proceedings: Construction Management and Economics 25th Anniversary Conference, July 16-18, University of Reading, Reading, UK. United Kingdom, 2007, 7 pages.

 

Researcher : Kwan AKH

Project Title:

Optimizing packing density for production of high-performance concrete

Investigator(s):

Kwan AKH

Department:

Civil Engineering

Source(s) of Funding:

Competitive Earmarked Research Grants (CERG)

Start Date:

09/2005

 

Abstract:

The main objectives of this project are to: (1) Study the packing characteristics of various combinations of cementitious materials. (2) Verify, compare and calibrate the existing packing models. (3) Study the effects of packing density and water content on the rheology of cement paste. (4) Develop a scientific mix design method for the production of high-performance concrete.

 

List of Research Outputs

 

Chan E.K.H., Au F.T.K. and Kwan A.K.H., Experimental and numerical study of full-range behaviour of partially prestressed concrete beams with external tendons, published in CDROM, Proceedings, IABSE Symposium, Weimar, Germany. 2007.

 

Chan K.H.E., Au F.T.K. and Kwan A.K.H., Experimental and numerical study of full-range behaviour of partially prestressed concrete beams with external tendons (Paper A-0135), Proceedings of IABSE Symposium, Weimar, Germany, 19-21 September 2007. IABSE, 8.

 

Du J.S., Au F.T.K., Cheung Y.K. and Kwan A.K.H., Ductility analysis of prestressed concrete beams with unbonded tendons, Engineering Structures. New York, ScienceDirect, 2008, 30 (1): 13-21.

 

Hong H.P., Wong S.S. and Kwan A.K.H., Impact of uncertain natural vibration period on quantile of seismic demand, Structural Engineering and Mechanics. 2008, 28(4): 357-372.

 

Kwan A.K.H. and Ng I.Y.T., Adding steel fibres to improve shock vibration resistance of concrete, Magazine of Concrete Research. 2007, 59(8): 587-597.

 

Kwan A.K.H. and Wong H.C., Effects of packing density, excess water and solid surface area on flowability of cement paste, Advances in Cement Research. 2008, 20(1): 1-11.

 

Kwan A.K.H., Ng P.L., Au F.T.K., Lam Y.K. and Liu C.H., On-line geometric constraint accommodation for adaptive constrained mesh generation, In: C K Choi, Proceedings of 4th International Conference on Advances in Structural Engineering and Mechanics. Korea, Techno Press, 2008, 3072-3084.

 

Kwan A.K.H., Ng P.L., Au F.T.K., Lam Y.K. and Liu C.H., On-line geometric constraint accommodation for adaptive constrained mesh generation, Proceedings, 4th International Conference on Advances in Structural Engineering and Mechanics (ASEM08), Jeju, Korea, May. 2008, 3072-3084.

 

Kwan A.K.H., Lam Y.K. and Ng P.L., Tension stiffening in reinforced concrete beams: a new tensile stress block, Proceedings, 4th International Conference on Advances in Structural Engineering and Mechanics (ASEM08), Jeju, Korea, May. 2008, 2357-2368.

 

Kwan A.K.H. and Wong H.C., Water film thickness: a fundamental parameter governing rheology of self-consolidating concrete (invited paper), Proceedings, 1st Cross-Strait Conference on Concrete Technology, Taiwan, November. 2007, 63-74.

 

Lam Y.K., Ng P.L. and Kwan A.K.H., Nonlinear multilevel analysis of reinforced concrete beams, Proceedings, 11th International Conference on Civil, Structural and Environmental Engineering Computing, St. Julians, Malta, September, abstract published as Paper 164 in proceedings, full paper published in CDROM . 2007.

 

Ng I.Y.T., Ng P.L. and Kwan A.K.H., Rheology of mortar and its influences on performance of self-consolidating concrete, Proceedings, 2nd International Conference on Advances in Concrete & Structures (ICACS 2008), Changsha, China, June. 2008.

 

Ng P.L., Ng I.Y.T. and Kwan A.K.H., Adiabatic temperature rise of incompletely hydrated cement concrete, Proceedings, 2nd International Conference on Advances in Concrete & Structures (ICACS 2008), Changsha, China, June. 2008.

 

Ng P.L., Ng I.Y.T. and Kwan A.K.H., Heat loss compensation in semi-adiabatic curing test of concrete, ACI Materials Journal. 2008, 105(1): 52-61.

 

Ng P.L., Lam Y.K. and Kwan A.K.H., Multi-layer visco-elastic creep model for time-dependent analysis fo concrete structures, Proceedings, 11th International Conference on Civil, Structural and Environmental Engineering Computing, St. Julians, Malta, September, abstract published as Paper 158 in proceedings, full paper published in CDROM. 2007.

 

Wong H.C. and Kwan A.K.H., Packing density of cementitious materials: measurement and modelling, Magazine of Concrete Research. 2008, 60(3): 165-175.

 

Wong H.C. and Kwan A.K.H., Packing density of cementitious materials: part 1 - measurement using a wet packing method, Materials and Structures. 2008, 41(4): 689-701.

 

Wong H.C. and Kwan A.K.H., Rheology of cement paste: role of excess water to solid surface area ratio, Journal of Materials in Civil Engineering, American Society of Civil Engineers. 2008, 20(2): 189-197.

 

Researcher : Kwong AKL

Project Title:

Design of Stability Improvement Works for Slope 7NE-C/C45 Central Avenue, CUHK

Investigator(s):

Kwong AKL

Department:

Civil Engineering

Source(s) of Funding:

Campus Development Office, The Chinese University of Hong Kong

Start Date:

04/2005

 

Abstract:

To undertake a rock slope upgrading design and supervision of the work.

 

List of Research Outputs

 

Kwong A.K.L., Characterization of Sheeting joint roughness of Hong Kong Granite using 3-D Laser Scanning Technique, The 3rd International Conference on Site Characterization, 1-4 April 2008, Taiwan.. 2008.

 

Kwong A.K.L., Han X. and So T.C., Constructional Aspect of Underwater Vacuum Preloading Technique, In: HKIE, HKIE Geotechnical Division Annual Seminar . 2008.

 

Kwong A.K.L., Lee P.K.K. and Tam C.C.Y., Determination of asperities angle of rock joints using 3D laser scanning technique. , 6th Asian regional conference of Geohazards in Engineering Geology, Seoul, Korea, 16-19 October 2007.. 2007.

 

Kwong A.K.L., Lee P.K.K. and Tam C.C.Y., Estimation of rock joint shear strength by 3D laser scanning based on Barton-Bandis model, In: IHS BRE , Proceedings of the BGA International Conference on Foundations, Dundee, Scotland. 2008.

 

Kwong A.K.L., Methodology to map rock fracture and measure roughness of Hong Kong granite using 3D laser scanning technique, Dalian University, Center for Rock Instability & Seismicity Research (CRISR). 2008.

 

Kwong A.K.L., Lee P.K.K. and Tam C.C.Y., Methodology to measure roughness of Hong Kong granite using 3D laser scanning technique, In: HKIE, HKIE Geotechnical Division Annual Seminar . 2008.

 

Kwong A.K.L. and Vickridge I.G., Proceedings of the Trenchless Technologies in Asia Pacific (Macau), China Hong Kong Society for Trenchless Technology. CHKSTT, 2007.

 

Kwong A.K.L., Some practical applications of recent surveying technology to geotechnical problems in Hong Kong, Engineering Surveying Technology and Equipment Exhibition at the Hong Kong Convention and Exhibition Centre. 2008.

 

Kwong A.K.L., The Vibration Effects of Blasting of Shaft to Nearby Structures , China Light and Power Hong Kong Limited. 2007.

 

Kwong A.K.L., Han X., Lee C.F., Tham L.G., Lee P.K.K. and Zhao W.B., The application of automatic data collection and wireless transmission technique to the monitoring of geotechnical problems. , Journal of Sichuan University (Engineering Science Edition). . 四川大学学报（工程科学版）, 2007.

 

Kwong A.K.L., Transactions of Hong Kong Institution of Engineers. HKIE, 2007.

 

Kwong A.K.L., Han X., Tham L.G. and Zhao W.B., Variation law of pore water pressure in soil improved by underwater vacuum preloading method., 自动數据采集和无線傳輸技朮在岩土工程監測中的應用[J], In: Chen Sheng-shui, Chinese Journal of Geotechnical Engineering. 四川大学学報(工程科学版), Nanjing Hydraulic Research Institute, 2007, 30: 658-662.

 

Researcher : Lai ACH

List of Research Outputs

 

Lai A.C.H., Yu D. and Lee J.H.W., Near and Intermediate Field Mixing of a Rosette Jet Group, The fifth International Symposium on Environmental Hydraulics. 2007.

 

Researcher : Lam KM

Project Title:

Experimental investigation on the zone of flow establishment in a submerged round jet in a current

Investigator(s):

Lam KM, Chan HC, Lee JHW

Department:

Civil Engineering

Source(s) of Funding:

Competitive Earmarked Research Grants (CERG)

Start Date:

11/2003

 

Abstract:

To carry out detailed velocity and concentration measurement in the zone of flow establishment (ZFE) of a simple jet; to study the behaviours of the ZFE of the jet in the presence of an ambient flow stream; in form of co-flow, counter-flow or cross-flow; to apply the measurement results of ZFE towards improving integral model prediction of jet behaviour.

 

Project Title:

Flow regimes of vortex pattern around a circular cylinder oscillating in water

Investigator(s):

Lam KM

Department:

Civil Engineering

Source(s) of Funding:

Competitive Earmarked Research Grants (CERG)

Start Date:

01/2006

 

Abstract:

The objectives of this project are: (1) To carry out detailed investigation of the flow and vortex patterns around a circular cylinder oscillating in water at a wide range of Keulegan-Carpenter (KC) number. (2) To obtain time-resolved velocity and vorticity fields of the flow with particle-image velocimetry (PIV). (3) To study the effect of a uniform flow stream on the flow and vortex patterns of an oscillating circular cylinder.

 

List of Research Outputs

 

Li X., Leung Y.C., Liu C.H. and Lam K.M., Physical modelling of flow field inside urban street canyons, Journal of Applied Meteorology & Climatology. Boston, USA, Amercian Meteorological Society, 2008, 47: 2058-2067.

 

Xiao F., Li X.Y. and Lam K.M., Investigation of the hydrodynamic behaviour of particles and aggregates by particle image velocimetry (PIV), IWA International Conference on Particle Separation, Toulouse, France. Toulouse, France, 2007.

 

Xiao F., Li X.Y. and Lam K.M., Investigation of the hydrodynamic behaviour of particles and aggregates by particle image velocimetry (PIV), Water Science and Technology: Water Supply. 2007, 7(2): 213-220.

 

Xiao F., Li X.Y. and Lam K.M., The Best Poster Award, IWA International Conference on Particle Separation, Toulouse, France. 2007.

 

Researcher : Lam YK

List of Research Outputs

 

Kwan A.K.H., Ng P.L., Au F.T.K., Lam Y.K. and Liu C.H., On-line geometric constraint accommodation for adaptive constrained mesh generation, In: C K Choi, Proceedings of 4th International Conference on Advances in Structural Engineering and Mechanics. Korea, Techno Press, 2008, 3072-3084.

 

Kwan A.K.H., Ng P.L., Au F.T.K., Lam Y.K. and Liu C.H., On-line geometric constraint accommodation for adaptive constrained mesh generation, Proceedings, 4th International Conference on Advances in Structural Engineering and Mechanics (ASEM08), Jeju, Korea, May. 2008, 3072-3084.

 

Kwan A.K.H., Lam Y.K. and Ng P.L., Tension stiffening in reinforced concrete beams: a new tensile stress block, Proceedings, 4th International Conference on Advances in Structural Engineering and Mechanics (ASEM08), Jeju, Korea, May. 2008, 2357-2368.

 

Lam Y.K., Ng P.L. and Kwan A.K.H., Nonlinear multilevel analysis of reinforced concrete beams, Proceedings, 11th International Conference on Civil, Structural and Environmental Engineering Computing, St. Julians, Malta, September, abstract published as Paper 164 in proceedings, full paper published in CDROM . 2007.

 

Ng P.L., Lam Y.K., Du J., Su K.L. and Fung W.S., Adaptive constrained mesh refinement for planar finite element analysis, The 4th International Conference on Advances in Structural Engineering and Mechanics, 26-28 May 2008, Jeju, Korea. Korea, Techno-Press, 2008, p3085-3097.

 

Ng P.L., Lam Y.K. and Kwan A.K.H., Multi-layer visco-elastic creep model for time-dependent analysis fo concrete structures, Proceedings, 11th International Conference on Civil, Structural and Environmental Engineering Computing, St. Julians, Malta, September, abstract published as Paper 158 in proceedings, full paper published in CDROM. 2007.

 

Researcher : Lam YK

List of Research Outputs

 

Kwan A.K.H., Ng P.L., Au F.T.K., Lam Y.K. and Liu C.H., On-line geometric constraint accommodation for adaptive constrained mesh generation, In: C K Choi, Proceedings of 4th International Conference on Advances in Structural Engineering and Mechanics. Korea, Techno Press, 2008, 3072-3084.

 

Kwan A.K.H., Ng P.L., Au F.T.K., Lam Y.K. and Liu C.H., On-line geometric constraint accommodation for adaptive constrained mesh generation, Proceedings, 4th International Conference on Advances in Structural Engineering and Mechanics (ASEM08), Jeju, Korea, May. 2008, 3072-3084.

 

Kwan A.K.H., Lam Y.K. and Ng P.L., Tension stiffening in reinforced concrete beams: a new tensile stress block, Proceedings, 4th International Conference on Advances in Structural Engineering and Mechanics (ASEM08), Jeju, Korea, May. 2008, 2357-2368.

 

Lam Y.K., Ng P.L. and Kwan A.K.H., Nonlinear multilevel analysis of reinforced concrete beams, Proceedings, 11th International Conference on Civil, Structural and Environmental Engineering Computing, St. Julians, Malta, September, abstract published as Paper 164 in proceedings, full paper published in CDROM . 2007.

 

Ng P.L., Lam Y.K., Du J., Su K.L. and Fung W.S., Adaptive constrained mesh refinement for planar finite element analysis, The 4th International Conference on Advances in Structural Engineering and Mechanics, 26-28 May 2008, Jeju, Korea. Korea, Techno-Press, 2008, p3085-3097.

 

Ng P.L., Lam Y.K. and Kwan A.K.H., Multi-layer visco-elastic creep model for time-dependent analysis fo concrete structures, Proceedings, 11th International Conference on Civil, Structural and Environmental Engineering Computing, St. Julians, Malta, September, abstract published as Paper 158 in proceedings, full paper published in CDROM. 2007.

 

Researcher : Lau TY

List of Research Outputs

 

Lu W.J., Lau T.Y. and Yue Q.Z.Q., Laboratory comparative tests for geomaterial strengths with drilling process monitoring technique, In: MF Cai and JA Wang, Boundaries of Rock Mechanics (Proceedings of the International Yong Scholars’ Symposium on Rock Mechanics), Editors: Meifeng Cai and Jin’an Wang, April 28 – May 2, 2008, Beijing, China. London, Taylor & Francis Group, 2008, 127-132.

 

Researcher : Lee CF

Project Title:

Research and information centre for landslip prevention and land development

Investigator(s):

Lee CF, Law KT

Department:

Civil Engineering

Source(s) of Funding:

The Hong Kong Jockey Club Charities Trust

Start Date:

10/1998

 

Abstract:

To provide Hong Kong with strong technical support and a comprehensive source of information for improving slope safety and developing land in Hong Kong; to promote the professional service capacity of Hong Kong and mainland China and gain world recognition in the area of slope safety.

 

Project Title:

Use of photogrammetry and 3D laser scanning technique for rock slope mapping and design

Investigator(s):

Lee CF, Kwong AKL, Tham LG

Department:

Civil Engineering

Source(s) of Funding:

Competitive Earmarked Research Grants (CERG)

Start Date:

11/2003

 

Abstract:

To develop a prototype system that combines the non-contact measurement technologies of photogrammetric imaging and 3D laser scanning to create dimensionally accurate and pictorially correct 3 dimensional models and orthoimages of a rock slope.

 

Project Title:

Land development by environmental vacuum preloading technique

Investigator(s):

Lee CF, Yue QZQ, Lee PKK, Yeung AT, Kwong AKL, Tham LG

Department:

Civil Engineering

Source(s) of Funding:

Central Allocation Vote - Group Research Project

Start Date:

06/2004

 

Abstract:

To develop a vacuum system that would increase the in-situ shear strength of the soft marine deposit in Hong Kong and to reduce its long-term settlement after reclamation.

 

Project Title:

Field instrumentation of soil nailed slope for better understanding of load development and economic design of soil nails

Investigator(s):

Lee CF, Lee PKK, Kwong AKL, Tham LG

Department:

Civil Engineering

Source(s) of Funding:

Competitive Earmarked Research Grants (CERG)

Start Date:

01/2005

 

Abstract:

To achieve significant savings in the cost of soil nail installation in the future by fully understanding the failure mechanism of a soil nailed slope and the actual load developed in the steel bars when the soil mass experiences large deformation.

 

Project Title:

Independent review of use of non-destructive testing in quality control in soil nailing works

Investigator(s):

Lee CF, Yeung AT, Tham LG

Department:

Civil Engineering

Source(s) of Funding:

Civil Engineering and Development Department - General Award

Start Date:

06/2006

 

Abstract:

To review and appraise the use of non-destructive testing (NDT) techniques to assess the quality of soil nailing works; to formulate a framework for application of NDT techniques for quality control of Landslip Preventive Measures (LPM) soil nailing works; to asess the suitability of Time Domain Reflectometry method and other NDT techniques for use under the framework and recommend how the techniques should be used.

 

List of Research Outputs

 

Kwong A.K.L., Han X., Lee C.F., Tham L.G., Lee P.K.K. and Zhao W.B., The application of automatic data collection and wireless transmission technique to the monitoring of geotechnical problems. , Journal of Sichuan University (Engineering Science Edition). . 四川大学学报（工程科学版）, 2007.

 

Li J., Tham L.G., Junaideen S.M., Yue Q.Z.Q. and Lee C.F., Loose fill slope stabilization with soil nails: Full-scale test, Journal Of Geotechnical And Geoenvironmental Engineering. USA, ASCE, 2008, 134(3): 277-288.

 

Ng T.S.T., Lee C.F., Baldwin A.N., Chan A.P.C., Chiang Y.H., Kumaraswamy M.M., Lam P.T.I., Lee P.K.K. and Wong J.M.W., Reinventing the Hong Kong Construction Industry for its Sustainable Development – Final Report, A Report Submitted to the Construction Industry Institute – Hong Kong. 2007, 338 pages.

 

Researcher : Lee JHW

Project Title:

Project Amoy - Investigating the transmission routes of the large SARS outbreak in Amoy Gardens

Investigator(s):

Lee JHW, Leung YC, Lam HN, Chan ATY, Chan LS, Ho PL, Hui SCM, Leung MKH, Li Y

Department:

Civil Engineering

Source(s) of Funding:

VCO SARS Research Fund

Start Date:

07/2003

 

Abstract:

To further analyze the correlation between the dosage and infection pattern in the Amoy Gardens for major infected blocks and flats using computational fluid dynamics as well as multi-zone air flow and thermal modelling; to develop mathematical and statistical models for analyzing the infection pattern in the Amoy Gardens; to carry out a case-control study in the Amoy Gardens for Blocks E, B, C and D.

 

Project Title:

Laboratory of Environmental Hydraulics

Investigator(s):

Lee JHW, Lam KM, Jayawardena AW, Li XY, Yu D, Kuang C, Yeh PJ, Choi DKW

Department:

Civil Engineering

Source(s) of Funding:

Joint Laboratories

Start Date:

11/2003

 

Abstract:

To provide a scientific backbone on studying and solving the problems of deteriorated ecology in Hong Kong.

 

Project Title:

Mixing of rosette jet group from ocean outfalls

Investigator(s):

Lee JHW, Lam KM

Department:

Civil Engineering

Source(s) of Funding:

Competitive Earmarked Research Grants (CERG)

Start Date:

12/2003

 

Abstract:

To study the mixing and merging of buoyant jets discharged from a rosette jet group from an ocean outfall in a cross flow.

 

Project Title:

Integrated physical and ecological management of rivers - with particular reference to the East River

Investigator(s):

Lee JHW

Department:

Civil Engineering

Source(s) of Funding:

NSFC/RGC Joint Research Scheme

Start Date:

02/2004

 

Abstract:

To combine the outstanding research strengths of the mainland research team on watershed vegetation, sediment transport, river geomorphology, urban dynamics, and environmental assessment with the proven expertise of the Hong Kong team on environmental hydraulics and hydrology, ecological management and water quality modeling to develop joint research in integrated river management. This is a critical step to provide a sound scientific basis for sustainable water management.

 

Project Title:

Data assimilation for forecasting of coastal water quality

Investigator(s):

Lee JHW, Jayawardena AW

Department:

Civil Engineering

Source(s) of Funding:

Competitive Earmarked Research Grants (CERG)

Start Date:

01/2005

 

Abstract:

To develop data assimilation methods to integrate hydro-meteorological and biological observations with deterministic water quality model predicitons; to develop a data-driven coastal water quality forecast system that effectively combines field data with three-dimensional hydrodynamic modelling.

 

Project Title:

Real-time hydro-environmental modelling and visualization system for public engagement

Investigator(s):

Lee JHW, Wang WP, Choi DKW, Yu D

Department:

Civil Engineering

Source(s) of Funding:

Innovation and Technology Support Programme

Start Date:

10/2006

 

Abstract:

The objective is to develop a GIS-based and integrated hydraulic-virtual reality (VR) system that will enable effective and scientifically advanced impact and risk assessment. The technology will enable (i) robust and seamless 3D environmental impact prediction from near to the far field; (ii) full integration with GIS data and advanced visualization capability; (iii) interactive internet access; and (iv) effective communication and public engagement.

 

Project Title:

Hydraulics of bottom rack intakes for supercritical storm flow diversion

Investigator(s):

Lee JHW, Yu D, Choi DKW

Department:

Civil Engineering

Source(s) of Funding:

Competitive Earmarked Research Grants (CERG)

Start Date:

01/2007

 

Abstract:

(1) A bottom rack is a hydraulic structure provided at the bottom of a river channel to divert water and to exclude the passage of coarse sediment. Bottom racks are used for water supply, hydroelectric power, or flood control. The intercepted flow in the underlying bottom rack chamber is complex, three-dimensional, and significantly affected by air entrainment. In particular, there has hitherto been no systematic study of the hydraulics of bottom rack intakes for supercritical upstream flows. Currently there is no rational basis for the design of such bottom intakes.(2) The objective of this project is to carry out a comprehensive experimental and theoretical investigation of the hydraulics of bottom rack intakes. The research consists of: 1) Experimental study of the flow field above the bottom rack and in the rack chamber for a supercritical upstream flow: Experiments will be carried out for a representative set of inflow channel and bottom rack slopes, chamber geometries, and a range of discharge flows. In addition to the study of head-discharge relation and the minimum length of bottom rack required, the flow characteristics (e.g. flow stability and threshold for surcharge) will also be observed. The depth, velocity, and air concentration in the turbulent flow will be measured at key cross-sections. 2) Numerical modeling of the two-phase flow in the bottom rack chamber using the Volume of Fluid (VOF) method: The turbulence model will be calibrated and validated against the flow and air-concentration measurements; key performance characteristics will be examined in a parametric study to derive design guidelines.(3) specifically, we aim to obtain a better understanding of the turbulent flow field inside the bottom rack, including the flow penetration through the rack bars, the air entrainment of the falling jet, and the stability of the induced flow in the chamber. A robust prediction method of the flow and performance characteristics of the bottom rack for supercritical upstream flows will be developed. The interaction of the chamber flow with the flow in the link channel to a vortex inlet will also be studied.(4) This basic research is engendered by a recent physical model study of a proposed large urban flood control scheme in Hong Kong. Bottom rack intakes can be used in steep upstream catchments to divert the fast moving storm flow into a vortex drop shaft and tunnel for eventual discharge to the sea. As these intakes are located in proximity to residential areas (often of premium land value), the design needs to be reasonably compact; stable and efficient flow diversion must be achieved in the bottom rack chamber and the linkage to the vortex inlet. And yet there is currently insufficient knowledge about the hydraulics of such bottom rack structures; intake design has to rely on ad hoc and time consuming physical model studies. 5 This project is especially relevant to densely populated Asian cities where urban flooding problems are becoming increasingly important due to urbanization and global climate change. The use of compact bottom rack intakes in hilly terrain to divert the storm flow upstream of the urban areas can be an economic and environmentally friendly flood control alternative. This project will result in: (i) an original data set of such air-water flows in bottom rack structures for supercritical flow diversion; (ii) an improved capability in the numerical modeling of such complex two-phase flows; and (iii) better design guidelines and tools to optimize the performance of bottom rack intakes.

 

List of Research Outputs

 

Choi D.K.W. and Lee J.H.W., Distributed entrainment sink approach for modelling mixing and transport in intermediate field, Journal of Hydraulic Engineering, ASCE. New York, N.Y., American Society of Civil Engineers, 2007, 133(7): 804-815.

 

Choi D.K.W. and Lee J.H.W., Post-operation impact assessment of the Harbour Area Treatment Scheme, Hong Kong, Fifth International Symposium on Environmental Hydraulics (ISEH V). Arizona, USA, 2007, CD-ROM.

 

Fan K.W., Fok L., Lee J.H.W. and Chen S.F., Epilithic diatom as a biological indicator for the assessment of water quality in the East River, Water Science & Technology: Water Supply. 2008, 7(2): 147-155.

 

Lai A.C.H., Yu D. and Lee J.H.W., Near and Intermediate Field Mixing of a Rosette Jet Group, The fifth International Symposium on Environmental Hydraulics. 2007.

 

Lee J.H.W., Yu D., Wong C.K.C. and Choi D.K.W., Drainage Improvement in Northern Hong Kong Island Hong Kong West Tunnel and Lower Catchment Improvement – Investigation: Additional Model Testing of Intake Model – Part A. Lateral Inflow Structure, Part B. M3 Intake, 2008.

 

Lee J.H.W., Editor in Chief , Journal of Hydro-environment Research. Elsevier, 2008.

 

Lee J.H.W., Review Board, International Journal of Sediment Research, Member, Elsevier, 2008.

 

Wang Y., Li X.Y. and Lee J.H.W., Influence of the biomass content in sediment on the sediment nutrient flux for a pulsed organic load. Modelling of the sediment oxygen demand and organic flux for a pulsed sediment organic load, Marine Pollution Bulletin. 2008, 57: 681-688.

 

Wang Y., Li X.Y. and Lee J.H.W., Modelling of sediment nutrient fluxes for a pulsed organic load, 3rd International Conference on Environmental Science and Technology, the American Academy of Sciences, Houston, Texas, USA. Houston, Texas, USA, 2007.

 

Yu D. and Lee J.H.W., Design of Tangential Vortex Intakes for Stormwater Diversion, 32nd International Association of Hydraulics Research Congress (CDROM), Venice, Italy, July 1-6. 2007.

 

Yu D., Lee J.H.W. and Wong C.K.C., Hydraulic Model Study of Stepped Drainage Channel with Sharp Bend and Trash Grills, The fifth International Symposium on Environmental Hydraulics. 2007.

 

Yu D., Lee J.H.W. and Wong C.K.C., Measurement of Supercritical Air-Water Bottom Rack Flow, Hydraulic Measurements and Experimental Methods. 2007.

 

Researcher : Lee PKK

Project Title:

International conference on slope engineering

Investigator(s):

Lee PKK

Department:

Civil Engineering

Source(s) of Funding:

Croucher Foundation - Conference / Seminars

Start Date:

12/2003

 

Abstract:

International conference on slope engineering

 

Project Title:

Using 3D Laser Scanning Technique and Triangulated Irregular Network (TIN) Surfaces to Determine Sheeting Joint Roughness of Hong Kong Granite

Investigator(s):

Lee PKK, Kwong AKL, Tham LG

Department:

Civil Engineering

Source(s) of Funding:

Competitive Earmarked Research Grants (CERG)

Start Date:

01/2006

 

Abstract:

The primary objective of the proposed investigation is to develop a prototype system that would quantify systemically and without human judgment, the relative contributions of: 1) basic frictional angle; 2) small-scale asperities angle and 3) large-scale waviness to the overall shearing resistance of the rock joints.

 

List of Research Outputs

 

Au F.T.K., Jiang R., Leung C.C.Y., Xie L., Lee P.K.K., Wong K.Y. and Chan W.Y., Development and calibration of finite element models for structural health monitoring of Ting Kau Bridge, Invited Lecture, In: Y B Yang and J D Yau, Proceedings of International Symposium on Environmental Vibrations (ISEV 2007), Taipei, Taiwan, November 28-30, 2007. Taiwan, National Taiwan University, 559-566.

 

Au F.T.K., Liu C.H. and Lee P.K.K., Shrinkage analysis of reinforced concrete floors using shrinkage-adjusted elasticity modulus, In: C K Choi, C Meyer and N Bicanic, Computers & Concrete. Korea, Techno-Press, 2007, 4 (6): 437-456.

 

Kwong A.K.L., Lee P.K.K. and Tam C.C.Y., Determination of asperities angle of rock joints using 3D laser scanning technique. , 6th Asian regional conference of Geohazards in Engineering Geology, Seoul, Korea, 16-19 October 2007.. 2007.

 

Kwong A.K.L., Lee P.K.K. and Tam C.C.Y., Estimation of rock joint shear strength by 3D laser scanning based on Barton-Bandis model, In: IHS BRE , Proceedings of the BGA International Conference on Foundations, Dundee, Scotland. 2008.

 

Kwong A.K.L., Lee P.K.K. and Tam C.C.Y., Methodology to measure roughness of Hong Kong granite using 3D laser scanning technique, In: HKIE, HKIE Geotechnical Division Annual Seminar . 2008.

 

Kwong A.K.L., Han X., Lee C.F., Tham L.G., Lee P.K.K. and Zhao W.B., The application of automatic data collection and wireless transmission technique to the monitoring of geotechnical problems. , Journal of Sichuan University (Engineering Science Edition). . 四川大学学报（工程科学版）, 2007.

 

Ng T.S.T., Lee C.F., Baldwin A.N., Chan A.P.C., Chiang Y.H., Kumaraswamy M.M., Lam P.T.I., Lee P.K.K. and Wong J.M.W., Reinventing the Hong Kong Construction Industry for its Sustainable Development – Final Report, A Report Submitted to the Construction Industry Institute – Hong Kong. 2007, 338 pages.

 

Yang J., Tham L.G., Lee P.K.K. and Yu F., Observed performance of long steel H-piles jacked into sandy soils: Closure, Journal of Geotechnical and Geoenvironmental Engineering, ASCE. 2007, 133(7): 898-901.

 

Researcher : Leung CCY

List of Research Outputs

 

Au F.T.K., Jiang R., Leung C.C.Y., Xie L., Lee P.K.K., Wong K.Y. and Chan W.Y., Development and calibration of finite element models for structural health monitoring of Ting Kau Bridge, Invited Lecture, In: Y B Yang and J D Yau, Proceedings of International Symposium on Environmental Vibrations (ISEV 2007), Taipei, Taiwan, November 28-30, 2007. Taiwan, National Taiwan University, 559-566.

 

Researcher : Li C

List of Research Outputs

 

Li C., Zhang T. and Fang H.H.P., Use of TaqMan gene probe for real-time monitoring of acidophilic hydrogen-producing bacteria, Biotechnology Letters. 2007, 29: 1753-1757.

 

Researcher : Li R

List of Research Outputs

 

Li R., Zhang T. and Fang H.H.P., Characteristics of a phototrophic sludge producing hydrogen from acetate and butyrate., International Journal of Hydrogen Energy.. 2008, 33.

 

Researcher : Li X

Project Title:

Trihalomethane formation potentials of Macao water supply contaminated by seawater and organic matter

Investigator(s):

Li XY

Department:

Civil Engineering

Source(s) of Funding:

The Macao Water Supply Co. Ltd., Macau - General Award

Start Date:

11/2000

 

Abstract:

To evaluate the formation potentials of trihalomethanes in Macao water supply contaminated by seawater instrusion, and to characterize the organic matter in Macao water in terms of molecular weight distribution and associated trihalomethane formation potentials.

 

Project Title:

Nutrient transformations during the decay of settled algae in the ephemeral sediment after algal blooms

Investigator(s):

Li XY, Fang HHP

Department:

Civil Engineering

Source(s) of Funding:

Competitive Earmarked Research Grants (CERG)

Start Date:

12/2003

 

Abstract:

To investigate the stoichiometry and reaction kinetics of the decay of settled algal blooms and related nutrient fluxes, and to characterize the environmental effects, such as hydraulics, water chemistry and sediment properties, on nutrient transformation during the diagenesis of algal sediment; to develop kinetic models and process simulation for nutrient fluxes from the ephemeral layer of algal sediment in the warm water of sub-tropical climate; to conduct in-situ field measurement of sediment nutrient fluxes in relation to algal blooms, and thus to validate the models against the field data for the nutrient flux from settled algal mass.

 

Project Title:

Role of loosely-bound extracellular polymeric substances (EPS) in bioflocculation of activated sludge

Investigator(s):

Li XY, Gu JD

Department:

Civil Engineering

Source(s) of Funding:

Competitive Earmarked Research Grants (CERG)

Start Date:

01/2005

 

Abstract:

To investigate the correlation between the quantity and properties of EPS in activated sludge, particularly loosely-bound EPS, and the performance of bioflocculation indicated by the quality of clarified effluent, biomass settleability and sludge dewaterability; to evaluate the influence of operational conditions, such as SRT, feeding substrate, shock loading and the dissolved oxygen (DO) level, on the production and composition of EPS as well as on the microbial profile of the sludge population in relation to biosolids-water separation.

 

Project Title:

Sludge granulation in biological wastewater treatment: technology, mechanism and characterization

Investigator(s):

Li XY, Gu JD

Department:

Civil Engineering

Source(s) of Funding:

NSFC/RGC Joint Research Scheme

Start Date:

04/2005

 

Abstract:

To investigate the mechanism of microbial granulation and to identify the controlling factors, such as the EPS content, shear intensity, substrate loading, and hydraulic loading, for granule formation in various bioreactors, including UASB reactors, bio-hydrogen reactors, aerobic and anoxic SBRs; to characterize the sludge throughout the course of granulation using fractal-based techniques for their structural features and using polymerase chain reaction (PCR) based techniques for the evolution in microbial population of the sludge; to develop the technology of sludge granulation for various biological wastewater treatment systems concerning system configuration, operational condition and control factors.

 

Project Title:

Characterisation of Wastewater Organic Pollutants as the Disinfection By-product Precursors in Surface Water Resources

Investigator(s):

Li XY, Xie YF

Department:

Civil Engineering

Source(s) of Funding:

Seed Funding Programme for Basic Research

Start Date:

03/2006

 

Abstract:

- Objectives: (1) To characterize the types and concentration of the disinfection by-product (DBP) precursor material in wastewater effluents of various degrees of treatment and the resulting DBP types and abundance in finished drinking water; (2) To investigate the stability, transformation and the change in the DBP formation characteristic of the wastewater DBP precursors in the surface water environment undergoing biodegradation and sedimentation. - Key issues and problems: Due to the worldwide decline of water resources, treated wastewater has become a growing portion of water supplies. Many surface water bodies, i.e. rivers, lakes and reservoirs, are used for both wastewater disposal and fresh water withdrawal for drinking water. The percentage of treated wastewater in drinking water sources could be as high as 100% in some cases during the drought season. However, little is known about the impact of wastewater discharge into the water resources on the DBP formation in finished drinking water. The wastewater-derived DBP problem can be much more serious in developing countries due to the lack of wastewater treatment and water environment protection. For example, along with the rapid economic development in China in the past two decades, more than 80% surface water resources are polluted to various extents by sewage disposal, including the East River in Guangdong that provides more than 70% fresh water supply of Hong Kong. Deterioration in the source water quality greatly impairs the capability of conventional water treatment, especially for DBP control and minimization. Natural organic matter (NOM) in surface water has been considered as the predominant DBP precursor (Singer 1999; Xie 2004). Numerous studies have been conducted on the characteristics, reactivity and DBP yield of NOM in chlorinated drinking water. However, there is little information about the DBP precursors brought about by wastewater discharge. Organic impurities that are present at higher concentrations in wastewater effluent than in natural waters would make a considerable contribution to DBP formation in drinking water (Galapate et al. 1997; Rostad et al. 2000; Chu et al. 2002). Wastewater precursors with chemical features different from NOM may lead to the formation of different DBPs than those typically formed in drinking water systems. On the other hand, natural reactions and processes, such as biodegradation and sedimentation, would affect the stability and transformation of the wastewater DBP precursors in the receiving water, altering their reactivity with chlorine in DBP formation. These wastewater-derived drinking water DBP issues remain to be addressed through experimental investigations. .

 

Project Title:

Contribution of wastewater discharge to the formation of disinfection by-products in drinking water: characterization and treatment

Investigator(s):

Li XY

Department:

Civil Engineering

Source(s) of Funding:

Competitive Earmarked Research Grants (CERG)

Start Date:

01/2007

 

Abstract:

(1) To characterize the types and concentration of the DBP precursor material in wastewater effluents of various degrees of treatment and the resulting DBP types and abundance in finished drinking water. (2) To identify cost-effective treatment technologies for tertiary wastewater treatment and drinking water pre-treatment for the minimization of wastewater-derived DBP formation in the drinking water supply.

 

Researcher : Li XY

Project Title:

Trihalomethane formation potentials of Macao water supply contaminated by seawater and organic matter

Investigator(s):

Li XY

Department:

Civil Engineering

Source(s) of Funding:

The Macao Water Supply Co. Ltd., Macau - General Award

Start Date:

11/2000

 

Abstract:

To evaluate the formation potentials of trihalomethanes in Macao water supply contaminated by seawater instrusion, and to characterize the organic matter in Macao water in terms of molecular weight distribution and associated trihalomethane formation potentials.

 

Project Title:

Nutrient transformations during the decay of settled algae in the ephemeral sediment after algal blooms

Investigator(s):

Li XY, Fang HHP

Department:

Civil Engineering

Source(s) of Funding:

Competitive Earmarked Research Grants (CERG)

Start Date:

12/2003

 

Abstract:

To investigate the stoichiometry and reaction kinetics of the decay of settled algal blooms and related nutrient fluxes, and to characterize the environmental effects, such as hydraulics, water chemistry and sediment properties, on nutrient transformation during the diagenesis of algal sediment; to develop kinetic models and process simulation for nutrient fluxes from the ephemeral layer of algal sediment in the warm water of sub-tropical climate; to conduct in-situ field measurement of sediment nutrient fluxes in relation to algal blooms, and thus to validate the models against the field data for the nutrient flux from settled algal mass.

 

Project Title:

Role of loosely-bound extracellular polymeric substances (EPS) in bioflocculation of activated sludge

Investigator(s):

Li XY, Gu JD

Department:

Civil Engineering

Source(s) of Funding:

Competitive Earmarked Research Grants (CERG)

Start Date:

01/2005

 

Abstract:

To investigate the correlation between the quantity and properties of EPS in activated sludge, particularly loosely-bound EPS, and the performance of bioflocculation indicated by the quality of clarified effluent, biomass settleability and sludge dewaterability; to evaluate the influence of operational conditions, such as SRT, feeding substrate, shock loading and the dissolved oxygen (DO) level, on the production and composition of EPS as well as on the microbial profile of the sludge population in relation to biosolids-water separation.

 

Project Title:

Sludge granulation in biological wastewater treatment: technology, mechanism and characterization

Investigator(s):

Li XY, Gu JD

Department:

Civil Engineering

Source(s) of Funding:

NSFC/RGC Joint Research Scheme

Start Date:

04/2005

 

Abstract:

To investigate the mechanism of microbial granulation and to identify the controlling factors, such as the EPS content, shear intensity, substrate loading, and hydraulic loading, for granule formation in various bioreactors, including UASB reactors, bio-hydrogen reactors, aerobic and anoxic SBRs; to characterize the sludge throughout the course of granulation using fractal-based techniques for their structural features and using polymerase chain reaction (PCR) based techniques for the evolution in microbial population of the sludge; to develop the technology of sludge granulation for various biological wastewater treatment systems concerning system configuration, operational condition and control factors.

 

Project Title:

Characterisation of Wastewater Organic Pollutants as the Disinfection By-product Precursors in Surface Water Resources

Investigator(s):

Li XY, Xie YF

Department:

Civil Engineering

Source(s) of Funding:

Seed Funding Programme for Basic Research

Start Date:

03/2006

 

Abstract:

- Objectives: (1) To characterize the types and concentration of the disinfection by-product (DBP) precursor material in wastewater effluents of various degrees of treatment and the resulting DBP types and abundance in finished drinking water; (2) To investigate the stability, transformation and the change in the DBP formation characteristic of the wastewater DBP precursors in the surface water environment undergoing biodegradation and sedimentation. - Key issues and problems: Due to the worldwide decline of water resources, treated wastewater has become a growing portion of water supplies. Many surface water bodies, i.e. rivers, lakes and reservoirs, are used for both wastewater disposal and fresh water withdrawal for drinking water. The percentage of treated wastewater in drinking water sources could be as high as 100% in some cases during the drought season. However, little is known about the impact of wastewater discharge into the water resources on the DBP formation in finished drinking water. The wastewater-derived DBP problem can be much more serious in developing countries due to the lack of wastewater treatment and water environment protection. For example, along with the rapid economic development in China in the past two decades, more than 80% surface water resources are polluted to various extents by sewage disposal, including the East River in Guangdong that provides more than 70% fresh water supply of Hong Kong. Deterioration in the source water quality greatly impairs the capability of conventional water treatment, especially for DBP control and minimization. Natural organic matter (NOM) in surface water has been considered as the predominant DBP precursor (Singer 1999; Xie 2004). Numerous studies have been conducted on the characteristics, reactivity and DBP yield of NOM in chlorinated drinking water. However, there is little information about the DBP precursors brought about by wastewater discharge. Organic impurities that are present at higher concentrations in wastewater effluent than in natural waters would make a considerable contribution to DBP formation in drinking water (Galapate et al. 1997; Rostad et al. 2000; Chu et al. 2002). Wastewater precursors with chemical features different from NOM may lead to the formation of different DBPs than those typically formed in drinking water systems. On the other hand, natural reactions and processes, such as biodegradation and sedimentation, would affect the stability and transformation of the wastewater DBP precursors in the receiving water, altering their reactivity with chlorine in DBP formation. These wastewater-derived drinking water DBP issues remain to be addressed through experimental investigations. .

 

Project Title:

Contribution of wastewater discharge to the formation of disinfection by-products in drinking water: characterization and treatment

Investigator(s):

Li XY

Department:

Civil Engineering

Source(s) of Funding:

Competitive Earmarked Research Grants (CERG)

Start Date:

01/2007

 

Abstract:

(1) To characterize the types and concentration of the DBP precursor material in wastewater effluents of various degrees of treatment and the resulting DBP types and abundance in finished drinking water. (2) To identify cost-effective treatment technologies for tertiary wastewater treatment and drinking water pre-treatment for the minimization of wastewater-derived DBP formation in the drinking water supply.

 

List of Research Outputs

 

Chan G.K.Y., Wang Y., Wang B., Cui Y. and Li X.Y., Efficient Electrochemical Generation of Ozone from Water with a Novel Electrode Material, Proceedings of 2007 American Institute of Chemical Engineers (AIChE) Annual Meeting, Salt Lake City, Utah, U.S.A., November 4-9,. 2007.

 

Chan G.K.Y., Chan C.Y., Cui Y., Wang Y., Wang B., Li X.Y., Lin W. and Christensen P.A., Efficient Electrolytic Generation of Ozone from Water with a Novel Electrode Material, Proceedings of 2007 World Congress on Ozone and Ultraviolet Technologies (IUVA), Los Angeles, California, U.S.A., August 27-29, . 2007.

 

Li X.Y., Zhai X., Chu H.P. and Zhang J., Characterization of flocculation dynamics from the evolution of particle size distributions, J. Environmental Engineering – ASCE. 2008, 134: 369-375.

 

Li X.Y., Membrane fouling in a membrane bioreactor (MBR): fouling characterization and biopolymer clusters (BPC), invited seminar to Rice University, Houston, Texas, USA, August, 2007.

 

Sheng G., Yu H.Q. and Li X.Y., Stability of sludge flocs under shear conditions, Biochemical Engineering Journal. 2008, 38: 302-308.

 

Wang X. and Li X.Y., Accumulation of biopolymer clusters in a submerged membrane bioreactor and its effect on membrane fouling, Water Research. 2008, 42: 855-862.

 

Wang X., Chen W. and Li X.Y., Membrane bioreactor (MBR) for an innovative biological nitrogen removal process, The 6th International Membrane Science and Technology Conference (IMSTEC), Sydney, Australia. Sydney, Australia, 2007.

 

Wang Y., Li X.Y. and Lee J.H.W., Influence of the biomass content in sediment on the sediment nutrient flux for a pulsed organic load. Modelling of the sediment oxygen demand and organic flux for a pulsed sediment organic load, Marine Pollution Bulletin. 2008, 57: 681-688.

 

Wang Y., Li X.Y. and Lee J.H.W., Modelling of sediment nutrient fluxes for a pulsed organic load, 3rd International Conference on Environmental Science and Technology, the American Academy of Sciences, Houston, Texas, USA. Houston, Texas, USA, 2007.

 

Wang Y. and Li X.Y., Modelling of sediment nutrient fluxes for a pulsed organic load, The 6th Forum of China Young Leading Scholars in Environmental Science and Technology, Xian, China. Xian, China, 2007.

 

Xiao F., Li X.Y. and Lam K.M., Investigation of the hydrodynamic behaviour of particles and aggregates by particle image velocimetry (PIV), IWA International Conference on Particle Separation, Toulouse, France. Toulouse, France, 2007.

 

Xiao F., Li X.Y. and Lam K.M., Investigation of the hydrodynamic behaviour of particles and aggregates by particle image velocimetry (PIV), Water Science and Technology: Water Supply. 2007, 7(2): 213-220.

 

Xiao F. and Li X.Y., Modelling the kinetics of aggregate breakage using improved breakage kernel, IWA International Conference on Particle Separation, Toulouse, France. Toulouse, France, 2007.

 

Xiao F., Li X.Y. and Lam K.M., The Best Poster Award, IWA International Conference on Particle Separation, Toulouse, France. 2007.

 

Xie B., Gu J. and Li X.Y., Protein profiles of extracellular polymeric substances and activated sludge in a membrane biological reactor by 2-dimensional gel electrophoresis, Water Science and Technology: Water Supply. London, U.K., International Water Association, 2007, 6(6): 27-33.

 

Xu X. and Li X.Y., Adsorption behaviour of dibutyl phthalate on marine sediments, Marine Pollution Bulletin. 2008, 57: 403-408.

 

Xu X., Li H., Gu J. and Li X.Y., Kinetics and metabolic pathway of melatonin biodegradation by a bacterium isolated from the mangrove sediment. , In: Frank Columbus , Environmental Biodegradation Research Trends. 2007.

 

Xu X., Wang Y. and Li X.Y., Sorption behavior of bisphenol A on marine sediments, J. Environmental Science and Health, Part A. 2008, 43: 239-246.

 

Yang S. and Li X.Y., Comparison of extracellular polymeric substances between aerobic granules and activated sludge, 3rd International Conference on Environmental Science and Technology, the American Academy of Sciences, Houston, Texas, USA. 2007.

 

Yang S., Li X.Y. and Yu H.Q., Formation and characterisation of fungal and bacterial granules under different feeding alkalinity and pH conditions, Process Biochemistry. 2008, 43: 8-14.

 

Researcher : Lim JBP

List of Research Outputs

 

Lim J.B.P. and Young B., Effects of Elevated Temperatures on Bolted Moment-connections between Cold-formed Steel Members, Engineering Structures. ELSEVIER, 2007, 29: 2419-2427.

 

Lim J.B.P., Young B. and Feng R., Ultimate Bearing Shear Strength of Cold-formed Steel Members using Bolted Connections at Elevated Temperatures, Proceedings of the 5th International Conference on Advances in Steel Structures. 2007, 718-725.

 

Researcher : Lin G

List of Research Outputs

 

Chi S., Guo X., Yang J. and Lin G., Study on small strain characteristics and threshold strain of dynamic Hardin-Drnevich model for soils, Chinese Journal of Geotechnical Engineering. 2008, 30(2): 243-249.

 

Researcher : Liu CH

List of Research Outputs

 

Au F.T.K., Liu C.H. and Lee P.K.K., Shrinkage analysis of reinforced concrete floors using shrinkage-adjusted elasticity modulus, In: C K Choi, C Meyer and N Bicanic, Computers & Concrete. Korea, Techno-Press, 2007, 4 (6): 437-456.

 

Kwan A.K.H., Ng P.L., Au F.T.K., Lam Y.K. and Liu C.H., On-line geometric constraint accommodation for adaptive constrained mesh generation, In: C K Choi, Proceedings of 4th International Conference on Advances in Structural Engineering and Mechanics. Korea, Techno Press, 2008, 3072-3084.

 

Kwan A.K.H., Ng P.L., Au F.T.K., Lam Y.K. and Liu C.H., On-line geometric constraint accommodation for adaptive constrained mesh generation, Proceedings, 4th International Conference on Advances in Structural Engineering and Mechanics (ASEM08), Jeju, Korea, May. 2008, 3072-3084.

 

Researcher : Liu CH

List of Research Outputs

 

Au F.T.K., Liu C.H. and Lee P.K.K., Shrinkage analysis of reinforced concrete floors using shrinkage-adjusted elasticity modulus, In: C K Choi, C Meyer and N Bicanic, Computers & Concrete. Korea, Techno-Press, 2007, 4 (6): 437-456.

 

Kwan A.K.H., Ng P.L., Au F.T.K., Lam Y.K. and Liu C.H., On-line geometric constraint accommodation for adaptive constrained mesh generation, In: C K Choi, Proceedings of 4th International Conference on Advances in Structural Engineering and Mechanics. Korea, Techno Press, 2008, 3072-3084.

 

Kwan A.K.H., Ng P.L., Au F.T.K., Lam Y.K. and Liu C.H., On-line geometric constraint accommodation for adaptive constrained mesh generation, Proceedings, 4th International Conference on Advances in Structural Engineering and Mechanics (ASEM08), Jeju, Korea, May. 2008, 3072-3084.

 

Researcher : Liu Y

List of Research Outputs

 

Liu Y., So T.C. and Yeung A.T., Use of tactile pressure sensor for plate load test, In: An-Bin Huang and Paul W. Mayne, Geotechnical and Geophysical Site Characterization, Proc., 3rd International Conference on Site Characterization ISC'3. London, Taylor & Francis, 2008, 1335-1338.

 

Yeung A.T., Liu Y. and So T.C., Use of grid-based tactile pressure sensor in geotechnical engineering, Applications of Innovative Technologies in Geotechnical Works, Proc., 28th Annual Seminar of Geotechnical Division, the Hong Kong Institution of Engineers. Hong Kong, HKIE, 2008, 281-286.

 

Researcher : Lo SH

Project Title:

Limit state analysis of non-homogeneous structures using integral equation technique

Investigator(s):

Lo SH, Dong C

Department:

Civil Engineering

Source(s) of Funding:

Incentive Award for RGC CERG Fundable But Not Funded Projects

Start Date:

07/2003

 

Abstract:

N/A

 

Project Title:

Analysis of transfer plate structures using high-performance solid 3D hybrid stress hexahedral elements

Investigator(s):

Lo SH, Su KL

Department:

Civil Engineering

Source(s) of Funding:

Competitive Earmarked Research Grants (CERG)

Start Date:

01/2005

 

Abstract:

To devise a rigorous yet practical analysis procedure for the design of transfer plate structures based on the recently developed high-performance hybrid stress 3D solid elements.

 

Project Title:

Automatic Adaptive Refinement Analysis using high-performance hexahedral elements

Investigator(s):

Lo SH

Department:

Civil Engineering

Source(s) of Funding:

Small Project Funding

Start Date:

01/2006

 

Abstract:

The finite element method is now a well established tool for the analysis of complicated engineering structures of irregular geometry, such as tall buildings, bridges, automobiles and aircraft, etc. However, this versatile technique gives only an approximation solution whose accuracy depends on the number of elements and the sophistication of individual elements used in the finite element model. With the introduction of the adaptive refinement procedure, the goal of achieving economically reliable finite element solution of specified accuracy for general three-dimensional problems is possible and feasible. Many high-performance solid elements of various geometrical shapes and orders have recently been developed based on the hybrid stress approach and the weak continuity requirement between elements. Parallel to this development are advances in the automatic mesh generation techniques over curved surfaces and within three-dimensional volumes [1-5]. A research project is proposed to bring the latest advances in solid element technology and the mesh generation techniques together to form an integrated adaptive refinement analysis scheme for providing high-quality economical solutions to practical engineering and benchmark problems, which cannot be obtained otherwise by classical simplified models of reduced dimensions.

 

List of Research Outputs

 

Lo S.H., Wu Z., Cheung Y.K. and Chen W., An enhanced global-local higher order theory for the free edge effect in laminates, Composite Structures. 2007, 81(4): 499-510.

 

Tong Z.H., Lo S.H., Jiang C. and Cheung Y.K., An exact solution for the three-phase thermo-electro-magneto-elastic cylinder model and its application to piezoelectric-magnetic fiber composites, International Journal of Solids and Structures. 2008, available online.

 

Tsang H.H., Fong H.Y., Xu X. and Lo S.H., Utilization of Scrap Tires for Earthquake Hazard Mitigation, Ninth International Symposium on Environmental Geotechnology and Global Sustainable Development. 2008.

 

Wu Z., Cheung Y.K., Lo S.H. and Chen W., Effects of higher-order global-local shear deformations on bending, vibration and buckling of multilayered plates, Journal of Composite Structures. 2008, 82(2): 277-289.

 

Wu Z., Cheung Y.K., Lo S.H. and Chen W., Thermal stress analysis for laminated plates using actual temperature field, International journal of mechanical sciences, NOV 2007. 2007, 49(11): 1276-1288.

 

Researcher : Mahesh G

List of Research Outputs

 

Kumaraswamy M.M., Mahesh G., Anvuur A.M. and Chung K.H.J., Targeting truly Integrated ‘Value Networks’ for PPPs, In: Y. Nielsen, 5th International Conference on Innovation in Architecture, Engineering and Construction (AEC2008), 25-28 June 2008. Antalya, Turkey, Middle East Technical University, Turkey . Turkey, Middle East Technical University, Turkey, 2008, 1-11.

 

Mahesh G., Kumaraswamy M.M., Anvuur A.M. and Coffey V., Contracting for Community Development: a case study based perspective of a public sector client initiative in Hong Kong, In: S.M. Ahmed, S. Azhar and S. Mohamed, 4th Intnl. Conf. on Construction in the 21st Century (CITC IV). Gold Coast, Australia, Griffith University and Florida International University, 2007, 366-372.

 

Researcher : Mak SW

List of Research Outputs

 

Yeung A.T., Mak S.W., Fung I.W.H. and Au A.S.K., A new laboratory apparatus to evaluate hydrodynamic dispersibility of soil during ocean dumping, Geotechnical Testing Journal. ASTM, 2008, 31(3): 199-205.

 

Researcher : Megawati K

Project Title:

Basin effects in the seismic hazard of Hong Kong

Investigator(s):

Megawati K, Chandler AM

Department:

Civil Engineering

Source(s) of Funding:

Competitive Earmarked Research Grants (CERG)

Start Date:

10/2005

 

Abstract:

The main objective of the proposed research is to investigate the extent of basin effects in Hong Kong by means of numerical ground-motion simulations. The narrow sedimentary basin along the northern coast of Hong Kong Island has been selected as the study region. A numerical model of the basin will be constructed and implemented into a ground-motion simulation program developed by the Co-I, Prof Koketsu.

 

Researcher : Ng IYT

List of Research Outputs

 

Kwan A.K.H. and Ng I.Y.T., Adding steel fibres to improve shock vibration resistance of concrete, Magazine of Concrete Research. 2007, 59(8): 587-597.

 

Ng I.Y.T., Ng P.L. and Kwan A.K.H., Rheology of mortar and its influences on performance of self-consolidating concrete, Proceedings, 2nd International Conference on Advances in Concrete & Structures (ICACS 2008), Changsha, China, June. 2008.

 

Ng P.L., Ng I.Y.T. and Kwan A.K.H., Adiabatic temperature rise of incompletely hydrated cement concrete, Proceedings, 2nd International Conference on Advances in Concrete & Structures (ICACS 2008), Changsha, China, June. 2008.

 

Ng P.L., Ng I.Y.T. and Kwan A.K.H., Heat loss compensation in semi-adiabatic curing test of concrete, ACI Materials Journal. 2008, 105(1): 52-61.

 

Researcher : Ng PL

List of Research Outputs

 

Kwan A.K.H., Ng P.L., Au F.T.K., Lam Y.K. and Liu C.H., On-line geometric constraint accommodation for adaptive constrained mesh generation, In: C K Choi, Proceedings of 4th International Conference on Advances in Structural Engineering and Mechanics. Korea, Techno Press, 2008, 3072-3084.

 

Kwan A.K.H., Ng P.L., Au F.T.K., Lam Y.K. and Liu C.H., On-line geometric constraint accommodation for adaptive constrained mesh generation, Proceedings, 4th International Conference on Advances in Structural Engineering and Mechanics (ASEM08), Jeju, Korea, May. 2008, 3072-3084.

 

Kwan A.K.H., Lam Y.K. and Ng P.L., Tension stiffening in reinforced concrete beams: a new tensile stress block, Proceedings, 4th International Conference on Advances in Structural Engineering and Mechanics (ASEM08), Jeju, Korea, May. 2008, 2357-2368.

 

Lam Y.K., Ng P.L. and Kwan A.K.H., Nonlinear multilevel analysis of reinforced concrete beams, Proceedings, 11th International Conference on Civil, Structural and Environmental Engineering Computing, St. Julians, Malta, September, abstract published as Paper 164 in proceedings, full paper published in CDROM . 2007.

 

Ng I.Y.T., Ng P.L. and Kwan A.K.H., Rheology of mortar and its influences on performance of self-consolidating concrete, Proceedings, 2nd International Conference on Advances in Concrete & Structures (ICACS 2008), Changsha, China, June. 2008.

 

Ng P.L., Lam Y.K., Du J., Su K.L. and Fung W.S., Adaptive constrained mesh refinement for planar finite element analysis, The 4th International Conference on Advances in Structural Engineering and Mechanics, 26-28 May 2008, Jeju, Korea. Korea, Techno-Press, 2008, p3085-3097.

 

Ng P.L., Ng I.Y.T. and Kwan A.K.H., Adiabatic temperature rise of incompletely hydrated cement concrete, Proceedings, 2nd International Conference on Advances in Concrete & Structures (ICACS 2008), Changsha, China, June. 2008.

 

Ng P.L., Ng I.Y.T. and Kwan A.K.H., Heat loss compensation in semi-adiabatic curing test of concrete, ACI Materials Journal. 2008, 105(1): 52-61.

 

Ng P.L., Lam Y.K. and Kwan A.K.H., Multi-layer visco-elastic creep model for time-dependent analysis fo concrete structures, Proceedings, 11th International Conference on Civil, Structural and Environmental Engineering Computing, St. Julians, Malta, September, abstract published as Paper 158 in proceedings, full paper published in CDROM. 2007.

 

Researcher : Ng TST

Project Title:

Fuzzy case-based reasoning approach applied to subcontractor registration

Investigator(s):

Ng TST

Department:

Civil Engineering

Source(s) of Funding:

Competitive Earmarked Research Grants (CERG)

Start Date:

12/2003

 

Abstract:

To investigate the CSR processes in use in HK and globally, to identify the Subcontractor Assessment Criteria (SAC) influencing the CSR decision, to identify the information requirements of the SAC; to devise a conceptual framework for representing the informational aspects and sequencing of the CSR decision-making task based on the findings of (i)-(iii); to develop the conceptual framework into a FCBR CSR system, and to implement the system with real data, and test and refine as necessary.

 

Project Title:

A dynamic balanced scorecard/gap analysis model for subcontractor appraisal

Investigator(s):

Ng TST

Department:

Civil Engineering

Source(s) of Funding:

Competitive Earmarked Research Grants (CERG)

Start Date:

01/2005

 

Abstract:

(1) To investigate the SPA processes in use in HK and globally; (2) to identify the Performance Evaluation Criteria (PEC) influcening the SPA decision; (3) to identify the formation requirements of the PEC; (4) to devise a conceptual framework for representing the SPA process based on the concept of the BS & GA and the findings of (1)-(3); (5) to develop the conceptual framework into an automated SPA model based on (4); (6) to implement the model developed in (5) with real data, and test and refine as necessary.

 

Project Title:

A fuzzy concession evaluation model for public private partnerships schemes

Investigator(s):

Ng TST

Department:

Civil Engineering

Source(s) of Funding:

Seed Funding Programme for Basic Research

Start Date:

04/2006

 

Abstract:

The aim of this study is to establish a reliable and practical model for evaluating the concession items put forth by the consortia in a Public-Private Partnerships (PPP) scheme so as to attain a "win-win-win" situation amongst the public bodies, private organisations, and end-users. The objectives of this study include:i) identifying the Critical Success Factors (CSF) for PPP projects and their impacts on concession evaluation;ii) examining the current practice being used for evaluating the concession items; iii) devising a fuzzy evaluation model to establish the impacts brought by concession items initiated by bidders; andiv) validating the fuzzy concession evaluation models using synthesized and real data. There is a growing awareness of the benefits seeking private organizations' involvement in providing and operating public facilities and services. Public Private Partnerships (PPPs) constitute an emerging approach that utilizes the financial, technical, managerial and commercial strengths of private enterprises to deliver public facilities/services which would otherwise be difficult to provide (Akintola et al, 2003). Through PPP, private partners would have a greater incentive to identify and adopt innovative approaches in providing and/or operating the facilities, and this could result in cost saving and an improvement in service quality (Smith, 1999; Chege and Rwelamila, 2001). With a shortage in public funding, there is a growing pressure for the public agents in Hong Kong to adopt the PPP concept (cf: Angeles and Walker, 2000), and examples of these including the much debated West Kowloon Cultural District, High Speed Road Maintenance Project, etc. While there are established mechanisms to measure the performance of private partners and regulate the tariff/charge during the operation stage, they are usually protected by an assured revenue stream (especially those working under the concession-based PPP) meaning that they can raise the tariff/charge should their revenues fall below the desired level of return (Merna and Smith, 1996). As a consequence, awarding a PPP project to one who proposes a very low tariff might sound attractive at start, but may eventually result in public discontentment and political upheaval should there be an incessant increase in tariff/charge like what is happening with the Western Harbour Crossing in Hong Kong. A major review on the literature and the technical circulars of the HKSAR Government reveal that there is a lack of informed approaches in evaluating PPP concessions. There is a need to establish a reliable yet practical strategy for evaluating concession items, viz. the (i) ideal concession or operating period; (ii) relationship between the tariff/charge and expected return; and (iii) stability of tariff/charge. However, to evaluate a PPP concession is never an easy task as decision-makers have to rely on a number of vague assumptions and the results may also be affected by the risks and uncertainties during the development and operation stages. Potential risk factors affecting the revenue include (i) cost overrun triggered by inflation, technical or managerial shortfalls, climate or environment change, and other such factors; or underestimation of revenue due to shrinkage in demand, recession, increased competition, etc, which are difficult if not impossible to quantify at the concession evaluation stage. When evaluating the concession items, risks and uncertainties must be duly considered. In this study, a concession evaluation model will be developed based on the fuzzy sets approach to improve the reliability and efficiency of this kind of decisions.

 

Project Title:

Reinventing Hong Kong Construction Industry for Sustainable Development

Investigator(s):

Ng TST, Lee PKK, Kumaraswamy MM, Lee CF

Department:

Civil Engineering

Source(s) of Funding:

Construction Industry Institute Hong Kong - General Award

Start Date:

10/2006

 

Abstract:

To review the development of the local construction industry and identify the key factors contributing to the present status of the construction industry in Hong Kong; to summarise the ways in which the construction industry of other advanced countries reacted and adjusted during periods of construction volume shrinkage; to explore available opportunities and identify possible options in response to the prevailing market conditions and regional developpment trends; to confirm with construction stakeholders the feasibility of the identified options and their potential value in promoting a more balanced and sustainable industry.

 

Project Title:

An Econometric Approach for Modelling the Impact of Undue Fluctuations in Construction Demand

Investigator(s):

Ng TST, Wong JMW

Department:

Civil Engineering

Source(s) of Funding:

Seed Funding Programme for Basic Research

Start Date:

04/2007

 

Abstract:

I. Key Issues and ProblemsIt is well recognised that construction industry is volatile and fluctuate dramatically to general economic conditions (NEDO, 1978; Hillebrandt, 2000). Frequently the fluctuations of the level of construction output can cause significant rippling effects in the economy because of the many linkages the industry has with other economic sectors (Chan, 2001). Yet, the industry lacks a coordinated effort to monitor changes in existing market and predict future demand for construction thus resulting in an imbalanced and distorted production capacity. Economists treasure an accurate method to assess the impact of the shock (or intervention) and its lag effects (Goh, 2005). Construction-related organisations also need to respond to fluctuating market demand to survive, and work within a tradition of competitive tendering and small profit margin (Soetanto et al, 2006). A number of reports scrutinising the performance of the sector (e.g. Egan, 1998; Hampson and Brandon, 2004) have called for the industry to extend their orientation by looking ahead and to prepare themselves to respond to potential future events and trends. The development of econometric models is thus postulated to assist policy-makers and construction stakeholders to cope with any undue fluctuations in construction and to formulate suitable policies.Unfortunately, any modelling of construction attributes is not without difficulties (Ofori, 1990) as the variables can be considerably affected by unexpected changes in domestic and surrounding economy (Briscoe, 1988; Bon, 1988; Hindle, 1993; Chan, 2001), demographic pattern and occupancy rate (Groes, 1985). While industry-wide construction demand models have been proposed, the macro-indicators (Ofori, 2001) and socio-economic variables governing the demand for individual sub-sector may vary significantly (cf: Goh, 2000). Modelling the construction demand and assessing the impact of shocks to different sub-sectors would, therefore, be a challenging task to analysts and decision-makers (Kaming et al, 1994).The most commonly used technique for modelling the demand of construction work is by regression analysis (Killingsworth, 1990; Tang et al, 1990; Akintoye and Skitmore, 1994; Goh, 1999). Perhaps less prevalent approaches for this type of modelling is the application of univariate time series methods such as exponential smoothing average (Merkies and Poot, 1990) or Box-Jenkins techniques (Oshobajo and Fellows, 1989; Notman et al, 1998). Artificial neural networks (Goh, 1996) and combined neural network genetic algorithm (Goh, 2000) models for forecasting construction demand were also built. While the multiple log-linear regression technique for modelling construction demand was considered superior to the multiple linear regression and autoregressive non-linear regression models (Goh, 1999), adopting simple statistical methods such as regression or time series analysis like the auto-regressive integrated moving average method may give rise to large predictive errors (Quevedo et al, 1988) as they are very sensitive to 'noise' (Tang et al, 1991). Artificial neural networks (ANNs) have the potential of enhancing the accuracy of construction demand forecasting (Goh, 1996) despite sufficient historical data must be solicited to train the artificial neural network models (Lertpalangsunti and Chan, 1998). Park et al (1991) argued that ANNs tend to generate high prediction errors for unforeseen events as the model is trained for forecasting under normal circumstances. As a result, when examining the impact of Asian financial crisis on construction demand (Goh, 2005), the auto-regressive integrated moving average technique (Wichern and Jones, 1977) was used to take advantage of the entire time series for the estimation rather than relying only on a restricted data set. However, models that have been developed to analyze the construction demand as per se are limited in reliability because they cannot allow for the full set of interactions with the rest of the economy. Particularly, economical impact analysis for the construction industry is under-explored. Chan (2002) reported on the short-term responses of some economic indicators in Singapore following shocks in the construction output using an econometric approach. Gerlach et al (2006) examined the impact that the Asian financial crisis has had upon the integration and dynamic links between a number of Asia-Pacific real estate markets. Hence, as a critical sector of the local economy, rigorous empirical analysis on the impact of shock to the construction industry for more sophisticated forward planning is imperative and timely. With the rapid development of econometric approaches, their robustness and appropriateness as a modelling technique in the context of examining the effects of an external shock are evident. Adequate observations in the series before and after the onset of the shock also allows econometric modelling by whichever parameter estimation process that is being used. In this investigation, an advanced and dynamic econometric approach is proposed to examine the variables influencing the demand of various construction sub-sectors and assess the responses of the demand following the shock of the Asian financial crisis. Granger causality approach, vector error-correction modelling (VEC), the impulse response function and variance decomposition analysis will be applied to accomplish this objective. This econometric modelling approach surpasses other methodologies by its dynamic nature and sensitivity to a variety of factors affecting the level of construction demand, taking into account indirect and local inter-sectoral effects.II. Purpose of Proposed InvestigationThe purpose of this study is to capture the past behavior and historical patterns of the construction demand in various sub-sectors by considering the volatility of construction market to the changes in macro-economic and socio-economic variables, and specifically investigate the responses of the demand following the shock of the Asian financial crisis. To achieve the desired purpose, the following objectives are envisaged:i) To assess the changing demand of the local construction industry focusing on the period subsequent to the Asian financial crisis;ii) To review the currently used approaches for modelling construction demand in Hong Kong and other jurisdictions;iii) To examine the factors influencing the demand in various construction sub-sectors in Hong Kong and to unveil their relationships; andiv) To determine the lag effects and sensitivity of local construction demand in various sub-sectors to economic shocks.

 

List of Research Outputs

 

Ekambaram P., Kumaraswamy M.M., Ng T.S.T. and Lam K.C., Reinforcing Lowest Price-based Contractor Selections - a Re-invention perspective, In: K. London, G. Thayarapan and J. Chen, CIB W092 Procurement Systems Conference on ‘Building across Borders’. Newcastle, Australia, CIB & University of Newcastle, 2007, 192-200.

 

Fan Y.C., Ng T.S.T. and Wong J.M.W., A study of forecasting the Hong Kong construction demand, In: W. Hughes, Proceedings: Construction Management and Economics 25th Anniversary Conference, July 16-18, University of Reading, Reading, UK. 2007, 12 pages.

 

Fang Y. and Ng T.S.T., Analysis of resource acquisition cost for construction project logistics, In: W. Hughes, Proceedings: Construction Management and Economics 25th Anniversary Conference, July 16-18, University of Reading, Reading, UK. 2007, 8 pages.

 

Fang Y. and Ng T.S.T., CIOB Best Paper in Project Management, 8th International Postgraduate Research Conference (Title of Paper: Optimisation of time and cost in construction logistics), Chartered Institute of Building. 2008.

 

Fang Y. and Ng T.S.T., Optimising Time and Cost in Construction Material Logistics, In: D. Eaton, L. Ruddock, V. Ahmed, G. Aouad & Z. Bittnar , Proceedings: BuHu 8th International Postgraduate Research Conference, June 26- 27, The Czech Technical University of Prague, Czech Republic. 2008, 9 pages.

 

Lam P.T.I., Kumaraswamy M.M. and Ng T.S.T., A Generic Framework of Performance Specifications for Specialist Works, In: S.M. Ahmed, S. Azhar and S. Mohamed, 4th Intnl. Conf. on Construction in the 21st Century (CITC IV). Gold Coast, Australia, Griffith University and Florida International University, 2007, 350-357.

 

Ng T.S.T., Xie J. and Cheung Y.K., A fuzzy simulation model for evaluating the concession items of public-private partnerships schemes, Automation in Construction. Amsterdam, Holland, Elsevier, 2007, 17(1): 22-29.

 

Ng T.S.T. and Xie J., A simulation model for evaluating the tariff stability of concession-based PPP proposals, Construction Innovation – Information, Process, Management. Bingley, UK, Emerald, 2008, 8(2): 106-119.

 

Ng T.S.T., Xie J., Cheung Y.K. and Jefferies M., A simulation model for optimizing the concession period of public-private partnerships schemes, International Journal of Project Management. Exeter, UK, Elsevier Science Ltd., 2007, 25(8): 791-798.

 

Ng T.S.T. and Cheung S.O., A virtual advisor for the procurement of infrastructure schemes, Journal of Professional Issues in Engineering Education and Practice, ASCE. New York, USA, American Society of Civil Engineers, 2007, 133(4): 275-284.

 

Ng T.S.T., Luu C.D.T. and Chu A.W.K., Delineating criteria for subcontractors registration considering divergence in skill base and scales, International Journal of Project Management. Exeter, UK, Elsevier Science Ltd., 2008, 26(4): 448-456.

 

Ng T.S.T. and Tang Z., Delineating the predominant criteria for subcontractor appraisal and their latent relationships, Construction Management and Economics. Hampshire, UK, Taylor & Francis Limited, 2008, 26(3): 249-259.

 

Ng T.S.T., Chan A.P.C., Wong J.M.W., Chiang Y.H., Hui E.C.M. and Kumaraswamy M.M., Development Strategy for Professional Resources of Hong Kong’s Construction and Related Engineering Services Sector – Inception Report, A Report Submitted to the Development Bureau, Government of HKSAR. 2007, 30 pages.

 

Ng T.S.T., Chan A.P.C., Wong J.M.W., Chiang Y.H., Hui E.C.M., Kumaraswamy M.M. and Fan Y.C., Development Strategy for Professional Resources of Hong Kong’s Construction and Related Engineering Services Sector – Interim Report, A Report Submitted to the Development Bureau, Government of HKSAR. 2008, 202 pages.

 

Ng T.S.T., Editorial Board (2007-2008), Construction Innovations - Information, Process, Management. Bingley, UK, Emerald, 2007.

 

Ng T.S.T., Editorial Board (2007-2008), Journal of Building and Construction Management. Hong Kong, Colormax Publication, 2007.

 

Ng T.S.T., Editorial Board (2007-2008), The Open Construction and Building Technology Journal. Oak Park, Illinois, USA, Bentham Science Publishers Ltd., 2008.

 

Ng T.S.T. and Wong M.W., Integrating social aspects when evaluating the feasibility of public private partnership schemes, In: C. Kissoon, Proceedings: 12th Pacific Association of Quantity Surveyors Congress, June 16-18, Edmonton, Alberta, Canada. 2008, 8 pages.

 

Ng T.S.T., Fang Y. and Ugwu O.O., Modeling construction material logistics system with stochastic Petri nets, Construction Innovation – Information, Process, Management. Bingley, UK, Emerald, 2008, 8(1): 46-60.

 

Ng T.S.T. and Wong M.W., Payment and audit mechanisms for non private-funded PPP-based infrastructure maintenance projects, Construction Management and Economics. Hampshire, UK, Taylor & Francis Limited, 2007, 25(9): 915-924.

 

Ng T.S.T., Lee C.F., Baldwin A.N., Chan A.P.C., Chiang Y.H., Kumaraswamy M.M., Lam P.T.I., Lee P.K.K. and Wong J.M.W., Reinventing the Hong Kong Construction Industry for its Sustainable Development – Final Report, A Report Submitted to the Construction Industry Institute – Hong Kong. 2007, 338 pages.

 

Ng T.S.T., Subcontractor registration in Hong Kong – current practice and future development, Hong Kong Institute of Surveyors, Continuous Professional Development Seminar, Jul 26, HKIS Headquarters, Hong Kong. 2007.

 

Ng T.S.T., Skitmore R.M. and Wong K.F., Using genetic algorithms and linear regression analysis for private housing demand forecast, Building and Environment. Oxford, UK, Pergamon Press, 2008, 43(6): 1171-1184.

 

Soo K.L., Kumaraswamy M.M., Ng T.S.T. and Ling F.Y.Y., Injecting Real-Life Law into Construction Education: Role-playing in Group Projects, In: R. Haigh and D. Amaratunga, CIB W89 ‘Building Education & Research’ Conference, BEAR 2008 on ‘Building Resilience’, Sri Lanka. UK, CIB and Univ. of Salford, 2008, 1176-1185.

 

Tang Z. and Ng T.S.T., To devise a subcontractor performance appraisal framework by learning from existing practices, In: C.P. Lima & M. Bauer, Proceedings: 3rd International Conference on Information and Knowledge Management (CIB W102), October 16-18, Fraunhofer-Informationszentrum Raum und Bau IRB, Stuttgart, Germany. 2007, 204-212.

 

Ugwu O.O. and Ng T.S.T., Towards a framework for durability design and life cycle costing of infrastructure projects, In: M. Lacasse, Proceedings: 11th International Conference on Durability of Building Materials and Components (11 DBMC), May 11-14, Lutfi Kirdar Istanbul Convention & Exhibition Centre, Istanbul, Turkey. 2008, 8 pages.

 

Zhang Y., Ng T.S.T. and Kumaraswamy M.M., Applying ant colony system techniques to solve time-cost trade-off problems, In: W. Hughes, Proceedings: Construction Management and Economics 25th Anniversary Conference, July 16-18, University of Reading, Reading, UK. United Kingdom, 2007, 7 pages.

 

Researcher : Niu J

List of Research Outputs

 

Chen J., Lee P., Niu J. and Wu Y., Simple equations for evaluating rainwater collection capcity in Hong Kong at different temporal scales, the 7th Shenzhen, Hong Kong, Zhuhai and Macao seminar on Water Supply. 2007, 242-247.

 

Researcher : Pam HJ

Project Title:

High strength reinforced concrete beam-column joints for Hong Kong practice

Investigator(s):

Pam HJ, Au FTK

Department:

Civil Engineering

Source(s) of Funding:

Competitive Earmarked Research Grants (CERG)

Start Date:

10/2003

 

Abstract:

To prepare the technical ground works on the behaviour of HSC beam-column joints under simulated earthquake loading for future incorporation of seismic detailing method into the Hong Kong design code; to investigate, through experiments and theoretical analyses, how to improve the ductility performance and ease of construction of HSC beam-column joints; propose a set of rational detailing rules for HSC beam-column joints for use in Hong Kong practice; and investigate the feasibility to carry out strengthening and/or repair of empty beam-column joints.

 

List of Research Outputs

 

Pam H.J., Experimental tests of PRC coupling beams under simulated seismic loading, Annual Conference of HAKI (Himpunan Ahli Konstruksi Indonesia = Indonesian Society of Civil and Structural Engineers). 2007.

 

Pam H.J., Sichuan Wenchuan 512 earthquake - overview of structural damage and design on simple buildings, Sowers Action (for the meeting for Wenchuan EQ). 2008.

 

Researcher : Qin X

List of Research Outputs

 

Zhang T., Qin X. and Fang H.H.P., Use of P-17 and NOX specific primer sets for assimilable organic carbon (AOC) measurements, Water Supply. 2007, 7: 157-163.

 

Researcher : Rahman MM

List of Research Outputs

 

Kumaraswamy M.M., Rahman M.M., Ekambaram P., Ugwu O.O., Anvuur A.M. and Yogeswaran K., Multi-Disciplinary and Multi-Functional Teams in PPP Procurement & Delivery, In: K. London, G. Thayarapan and J. Chen, CIB W092 Procurement Systems Conference on ‘Building across Borders’. Newcastle, Australia, CIB and University of Newcastle, 2007, 250-262.

 

Rahman M.M. and Kumaraswamy M.M., Relational Contracting and Teambuilding: Assessing Potential Contractual and Non-Contractual Incentives, Journal of Management in Engineering. USA, ASCE (American Soc. of Civil Engineers), 2008, 24, No.1: 48–63.

 

Researcher : Sheng G

List of Research Outputs

 

Sheng G., Yu H.Q. and Li X.Y., Stability of sludge flocs under shear conditions, Biochemical Engineering Journal. 2008, 38: 302-308.

 

Researcher : Shih K

List of Research Outputs

 

Davie M.G., Shih K., Pacheco F.A., Leckie J.O. and Reinhard M., Palladium-Indium Catalyzed Reduction of N-Nitrosodimethylamine: Indium as a Promoter Metal, Environmental Science & Technology. 2008, 42: 3040-3046.

 

Hsieh C.H., Lo S.L., Hu C.Y., Shih K., Kuan W.H. and Chen C.L., Thermal Detoxification of Hazardous Metal Sludge by Applied Electromagnetic Energy, Chemosphere. 2008, 71: 1693-1700.

 

Lim S.H., Ferraris C., Schreyer M., Shih K., Leckie J.O. and White T.J., Influence of Cobalt Doping on Photocatalytic Nano-titania: Crystal Chemical Analysis by XRD and XPS, Journal of Solid State Chemistry. 2007, 180: 2905-2915.

 

Shih K., Environmental Nanomaterials: A New Horizons in Pollution Control and Decontamination Technology, Department of Environmental Engineering, National Chung Hsing University (Taiwan). 2008.

 

Shih K., Mechanisms for Incorporating Hazardous Metal Sludge in Ceramic Matrix , The Second International Symposium on Recycling Technologies for Heavy Metal Containing Ash, Slag and Sludge . 2008.

 

Researcher : Siu WH

List of Research Outputs

 

Siu W.H. and Su K.L., Non-linear behaviour of bolt groups under eccentric and inclined shear, In: A. Zingoni, The Third International Conference on Structural Engineering, Mechanics and Computation, Cape Town, South Africa, 10-12 September 2006. Netherland, Millpress, 2007, 1: p477-482.

 

Su K.L. and Siu W.H., Displacement-based approach for analysis of plated RC beams with bolt connections, The 4th International Conference on Advances in Structural Engineering and Mechanics, 26-28 May 2008, Jeju, Korea. Korea, Techno-Press, 2008, 2288-2298.

 

Researcher : Smith ST

List of Research Outputs

 

Ameli M. and Smith S.T., An analytical study on the shear resistance of FRP-strengthened RC beam-column joints, In: TC Triantafillou, Fiber Reinforced Polymer Reinforcement for Concrete Structures (FRPRCS-8). Greece, University of Patras, 2007, CD Rom.

 

Kim S.J. and Smith S.T., Pullout tests on FRP anchors, In: ST Smith, Asia-Pacific Conference on FRP in Structures (APFIS 2007). Hong Kong, The University of Hong Kong, 2007, 775-782.

 

Lau K.T., Smith S.T., Tam H.Y. and Ho S.L., Smart composites for civil infrastructure applications, In: ST Smith, Asia-Pacific Conference on FRP in Structures (APFIS 2007). Hong Kong, The University of Hong Kong, 2007, 579-585.

 

Loo M.K.Y., Foster S.J. and Smith S.T., Bond stress versus slip model for CFRP plates bonded to concrete, In: ST Smith, Asia-Pacific Conference on FRP in Structures (APFIS 2007). Hong Kong, The University of Hong Kong, 2007, 709-716.

 

Loo M.K.Y., Foster S.J. and Smith S.T., Fatigue behaviour of CFRP-repaired corroded RC beams, In: TC Triantafillou, Fiber Reinforced Polymer Reinforcement for Concrete Structures (FRPRCS-8). Greece, University of Patras, 2007, CD Rom.

 

Oehlers D.J., Seracino R. and Smith S.T., Design Handbook for RC Structures Retrofitted with FRP and Metal Plates: Beams and Slabs (HB 305-2008), Sydney, Australia, Standards Australia, 2008.

 

Shrestha R. and Smith S.T., An experimental investigation on the strengthening of RC beam-column connections with FRP composites, In: ST Smith, Asia-Pacific Conference on FRP in Structures (APFIS 2007). Hong Kong, The University of Hong Kong, 2007, 213-220.

 

Smith S.T., Conference Proceedings, In: ST Smith, Asia-Pacific Conference of FRP in Structures (APFIS 2007). Hong Kong, University of Hong Kong, 2007.

 

Sriravindrarajah S., Kaul R. and Smith S.T., Creep of FRP strengthened concrete columns under constant and incremental sustained loading, In: TC Triantafillou, Fiber Reinforced Polymer Reinforcement for Concrete Structures (FRPRCS-8). Greece, University of Patras, 2007, CD Rom.

 

Yuan X.F., Xia S.H., Lam L. and Smith S.T., Analysis and behaviour of FRP-confined short concrete columns subjected to eccentric loading, Journal of Zhejiang University SCIENCE A. China, Zhejiang University, 2008, 9(1): 38-49.

 

Researcher : So TC

List of Research Outputs

 

Kwong A.K.L., Han X. and So T.C., Constructional Aspect of Underwater Vacuum Preloading Technique, In: HKIE, HKIE Geotechnical Division Annual Seminar . 2008.

 

Liu Y., So T.C. and Yeung A.T., Use of tactile pressure sensor for plate load test, In: An-Bin Huang and Paul W. Mayne, Geotechnical and Geophysical Site Characterization, Proc., 3rd International Conference on Site Characterization ISC'3. London, Taylor & Francis, 2008, 1335-1338.

 

Yeung A.T., Liu Y. and So T.C., Use of grid-based tactile pressure sensor in geotechnical engineering, Applications of Innovative Technologies in Geotechnical Works, Proc., 28th Annual Seminar of Geotechnical Division, the Hong Kong Institution of Engineers. Hong Kong, HKIE, 2008, 281-286.

 

Researcher : So TC

List of Research Outputs

 

Kwong A.K.L., Han X. and So T.C., Constructional Aspect of Underwater Vacuum Preloading Technique, In: HKIE, HKIE Geotechnical Division Annual Seminar . 2008.

 

Liu Y., So T.C. and Yeung A.T., Use of tactile pressure sensor for plate load test, In: An-Bin Huang and Paul W. Mayne, Geotechnical and Geophysical Site Characterization, Proc., 3rd International Conference on Site Characterization ISC'3. London, Taylor & Francis, 2008, 1335-1338.

 

Yeung A.T., Liu Y. and So T.C., Use of grid-based tactile pressure sensor in geotechnical engineering, Applications of Innovative Technologies in Geotechnical Works, Proc., 28th Annual Seminar of Geotechnical Division, the Hong Kong Institution of Engineers. Hong Kong, HKIE, 2008, 281-286.

 

Researcher : Soo KL

List of Research Outputs

 

Cheng T.Y.W., Soo K.L., Kumaraswamy M.M. and Wu J., Are there ways to ensure fair and prompt payment?, Lighthouse Club Conference on “Security of Payment in the Construction Industry”, 21 Nov. 2007. Hong Kong, Lighthouse Club, 2007, 1-14.

 

Soo K.L., Kumaraswamy M.M. and Wu J., Contractor’s Right to Stop Work on Non-Payment: A Comparative Perspective from Hong Kong, In: R. Haigh and D. Amaratunga, CIB W89 ‘Building Education & Research’ Conference, BEAR 2008 on ‘Building Resilience’, Sri Lanka. UK, CIB and Univ. of Salford, 2008, 1263-1273.

 

Soo K.L., Kumaraswamy M.M., Ng T.S.T. and Ling F.Y.Y., Injecting Real-Life Law into Construction Education: Role-playing in Group Projects, In: R. Haigh and D. Amaratunga, CIB W89 ‘Building Education & Research’ Conference, BEAR 2008 on ‘Building Resilience’, Sri Lanka. UK, CIB and Univ. of Salford, 2008, 1176-1185.

 

Wu J., Kumaraswamy M.M. and Soo K.L., Regulations affecting Construction Procurement in Mainland China, BuHu 8th International PGR Conference, June 26-27, Prague, . Czech Republic, Czech Technical University in Prague, 2008, 265-274.

 

Researcher : Su KL

Project Title:

Reinforced concrete coupling beams with embedded steel plate

Investigator(s):

Su KL, Pam HJ

Department:

Civil Engineering

Source(s) of Funding:

Competitive Earmarked Research Grants (CERG)

Start Date:

10/2003

 

Abstract:

To develop a new form of coupling beam which has high performance in both wind and seismic induced loads.

 

Project Title:

Fractal hybrid finite element method for two-dimensional crack analysis

Investigator(s):

Su KL

Department:

Civil Engineering

Source(s) of Funding:

Small Project Funding

Start Date:

10/2006

 

Abstract:

For cracks in brittle or quasi-brittle materials, such as concrete and graphite, the stress field in the vicinity of the crack tip can be expressed in terms of Williams' stress series. The strength of the stress singularity at the crack tip can be quantified by the first term (the stress intensity factors). The second term in the series, namely T-stress, could affect the size and shape of the crack-tip plastic zone [1-2] and stability of the crack path direction [3-6]. Recently, it was found that the higher-order terms also contribute to the size effect of quasi-brittle materials [7-8]. Thus, accurate determination of the leading coefficients are important in fracture analyses. However, up to now, only limited numerical methods have been developed for the accurate determination of the leading coefficients. Examples are the use of the high-order hybrid element [9], the scaled boundary finite element [10] and the fractal finite element method (FFEM) [11, 12]. It was reported in Refs. [9-11] that accurate determination of the higher order coefficients was much more difficult than that of the SIF. It was found that when full integration is used for the Lagrangian element, the element can become too stiff, leading to locking, and the computation is more expensive for FFEM. When uniform reduced integration (URI) is used to calculate the stiffness matrices, the apparent advantages are its low computational cost and its ability in alleviating various lockings. Unfortunately, elements with stiffness matrices calculated using URI are often plagued by commutable zero energy modes. The unstable behaviour of URI elements in FFEM has hindered its general applications in simulating fracture problems. The objective of this research study is to extend the hybrid stabilization method [13] to suppress the zero energy modes of the URI elements. By combining the hybrid element with FFEM, accurate determination of the higher-order coefficients can be achieved. A new method, namely fractal hybrid element method, will be developed accordingly for advanced fracture analysis. References: [1] Larsson SG., Carlsson AJ., Influence of non-singular stress terms and specimen geometry on small-scale yielding at crack-tips in elastic-plastic materials, Journal of the Mechanics and Physics of Solids 1973;21:263-77. [2] Rice JR., Limitations to the small scale yielding approximation for crack tip plasticity, Journal of the Mechanics and Physics of Solids 1974; 22: 17-26. [3] Cotterell B., Rice JR., Slightly curved or kinked cracks, International Journal of Fracture 1980;16:155-169. [4] Karihaloo BL., Keer LM., Nemat-Nasser S., Oranratnachai A., Approximate description of crack kinking and curving, Journal of Applied Mechanics –Transactions of the ASME 1981;48: 515-19. [5] Melin S., The influence of the T-stress on the directional stability of cracks, International Journal of Fracture 2002;114: 259-65. [6] Fett T., Munz D., T-stress and crack path stability of DCDC specimens, International Journal of Fracture 2003:L165-L70. [7] Dyskin AV. Crack growth criteria incorporating non-singular stresses: size effect in apparent fracture toughness. International Journal of Fracture 1997; 83: 191-206. [8] Karihaloo BL. Size effect in shallow and deep notched quasi-brittle structures. International Journal of Fracture 1999; 95: 379-90. [9] Karihaloo BL., Xiao QZ. Accurate determination of the coefficients of elastic crack tip asymptotic field by a hybrid crack element with p-adaptivity. Engineering Fracture Mechanics 2001; 68: 1609-30. [10] Chidgzey SR., Deeks AJ. Determination of coefficients of crack tip asymptotic fields using the scaled boundary finite element method. Engineering Fracture Mechanics 2005; 72: 2019-36. [11] Su RKL., Feng WJ. Accurate determination of mode I and II leading coefficients of the Williams expansion by finite element analysis. Finite Elements in Analysis and Design 2005; 41: 1175-86. [12] Leung AYT, Dai H, Fok SL and Su RKL, The fractal finite element method for unbounded problems, International Journal for Numerical Methods in Engineering 2004, 61(7), p990-1008. [13] Sze KY., Yi S., Tay MH. An explicit hybrid stabilized eighteen-node solid element for thin shell analysis. International Journal for Numerical Methods in Engineering 1997; 40:1839-56.

 

Project Title:

Strengthening of reinforced concrete coupling beams by bolted external steel plates

Investigator(s):

Su KL, Pam HJ

Department:

Civil Engineering

Source(s) of Funding:

Competitive Earmarked Research Grants (CERG)

Start Date:

12/2006

 

Abstract:

1 The primary objective of this proposal is to develop a new and original retrofitting method for reinforced concrete (RC) coupling beams by attachment of external steel plates to increase their strength, deformability and energy dissipation ability. Specifically, we intend: a) to conduct an experimental study of full-scale beam specimens under reversed cyclic loads to quantify their structural performance, and to investigate the influences of the span-depth ratio of the beams, type of failure mode (flexural and shear), thickness and arrangement of steel plates. b) to conduct a parametric study using non-linear finite element analysis to supplement the experimental study. Partial-interaction between the external steel plate and RC beams will be properly modelled, internal load transfer mechanism will be displaced and bolt arrangements will be studied. c) to conduct a shear load test of anchor bolts to determine the load-deformation curves that form an essential component in the above-mentioned simulation. Various common anchor bolts including dynamic set bolts (manufactured by Hilti corporation) will be tested.d) to develop a new theory for calculating the full range non-linear response of bolt groups. The theory postulates that the directions of yielded bolt forces depend on the point of rotation of the bolt group. By varying the point of rotation, equilibrium between yielded bolt forces and applied loads is sought in each loading step. e) to develop a design model for determination of the load-carrying capacity of the strengthened beams. The results will be verified by the experimental and numerical results. (7) The study should markedly improve our understanding of steel plate strengthened structures. In the next stage, possible local buckling of steel plates and post-peak behaviour of strengthened beams would be investigated. A theoretical model will be established to determine the displacement capacity of the strengthened beams.

 

List of Research Outputs

 

Feng W.J., Su K.L. and Pan E., Fracture analysis of a penny-shaped magnetically dielectric crack in a magnetoelectroelastic material, International Journal of Fracture. Dordrecht, Kluwer Academic, 2007, 146(3): 125-138.

 

Ng P.L., Lam Y.K., Du J., Su K.L. and Fung W.S., Adaptive constrained mesh refinement for planar finite element analysis, The 4th International Conference on Advances in Structural Engineering and Mechanics, 26-28 May 2008, Jeju, Korea. Korea, Techno-Press, 2008, p3085-3097.

 

Siu W.H. and Su K.L., Non-linear behaviour of bolt groups under eccentric and inclined shear, In: A. Zingoni, The Third International Conference on Structural Engineering, Mechanics and Computation, Cape Town, South Africa, 10-12 September 2006. Netherland, Millpress, 2007, 1: p477-482.

 

Su K.L. and Wong S.M., A survey on axial load ratios of structural walls in medium-rise residential buildings in Hong Kong, Transactions of Hong Kong Institution of Engineers. Hong Kong, The Hong Kong Institution of Engineers, 2007, 14(3): 40-46.

 

Su K.L. and Cheng B., Design guidelines for plate-reinforced composite coupling beams, The 4th International Conference on Advances in Structural Engineering and Mechanics, 26-28 May 2008, Jeju, Korea. Korea, Techno-Press, 2008, 2340-2356.

 

Su K.L. and Fok S.L., Determination of coefficients of the crack tip asymptotic field by fractal hybrid finite elements, Engineering Fracture Mechanics. New York, USA, Pergamon Press, 2007, 74(10): 1649-1994.

 

Su K.L. and Siu W.H., Displacement-based approach for analysis of plated RC beams with bolt connections, The 4th International Conference on Advances in Structural Engineering and Mechanics, 26-28 May 2008, Jeju, Korea. Korea, Techno-Press, 2008, 2288-2298.

 

Su K.L., Engineering Overseas Visitor Programme Fellowship, Faculty of Engineering, The University of Hong Kong. 2008.

 

Su K.L. and Feng W., Fracture behavior of a bonded magneto-electro-elastic rectangular plate with an interface crack, Archive of Applied Mechanics. New York, USA, Springer, 2008, 78(5): 343-362.

 

Su K.L. and Tsang H.H., Invited Technical Meeting on Lessons Learnt from the Sichuan Earthquake, at the Headquarters of The Hong Kong Institution of Engineers on 3 June 2008. 2008.

 

Su K.L., Seismic Design on Buildings, Training Seminar Hong Kong Housing Authority on 5-6 May 2008, Hong Kong. 2008.

 

Su K.L. and Wong S.M., Seismic behaviour of slender reinforced concrete shear walls under high axial load ratio, Engineering Structures. Oxford, Elsevier Science Ltd., 2007, 29(8).

 

Su K.L., The Open Construction and Building Technology Journal. USA, Bentham Science Publishers Ltd, 2008.

 

Tsang H.H., Su K.L. and Lam N.T.K., Displacement-based Seismic Assessment Procedure for Existing Building Structures, First International Conference on Modern Design, Construction and Maintenance of Structures. 2007.

 

Zhu Y., Su K.L. and Zhou F.L., Seismic behavior of strengthened reinforced concrete coupling beams by bolted steel plates, part 1: Experimental study, Structural Engineering and Mechanics. Korea, Techno Press, 2007, 27(2): 149-172.

 

Researcher : Sun W

List of Research Outputs

 

Sun W., Wong S.C., Zhang P. and Shu C.W., A shock-fitting algorithm for the LWR model on inhomogeneous highways, Paper presented at the Tenth International Conference on Application of Advanced Technologies in Transportation, 27-31 May, Athens, Greece. 2008.

 

Researcher : Sze NN

List of Research Outputs

 

Sze N.N. and Wong S.C., Diagnostic analysis of the logistic model for pedestrian injury severity in traffic crashes, Accident Analysis and Prevention. New York, Pergamon Press, 2007, 39: 1267-1278.

 

Sze N.N., Wong S.C. and Chan W.F., Traffic crashes at toll plazas in Hong Kong, Proceedings of the Institution of Civil Engineers, Transport. London, ICE, 2008, 161: 71-76.

 

Wong S.C., Wong C.W. and Sze N.N., Attitudes of public light bus drivers to penalties to combat red light violations in Hong Kong, Transport Policy. New York, ScienceDirect, 2008, 15: 43-54.

 

Wong S.C., Sze N.N. and Li Y.C., Contributory factors to traffic crashes at signalized intersections in Hong Kong, Accident Analysis and Prevention. New York, Pergamon Press, 2007, 39: 1107-1113.

 

Wong S.C., Sze N.N. and Li Y.C., Traffic crashes at signalized intersections, Paper presented at the Twelve International Conference of Hong Kong Society for Transportation Studies, 8-10 December, Hong Kong. Hong Kong, 2007.

 

Researcher : Tam CCY

List of Research Outputs

 

Kwong A.K.L., Lee P.K.K. and Tam C.C.Y., Determination of asperities angle of rock joints using 3D laser scanning technique. , 6th Asian regional conference of Geohazards in Engineering Geology, Seoul, Korea, 16-19 October 2007.. 2007.

 

Kwong A.K.L., Lee P.K.K. and Tam C.C.Y., Estimation of rock joint shear strength by 3D laser scanning based on Barton-Bandis model, In: IHS BRE , Proceedings of the BGA International Conference on Foundations, Dundee, Scotland. 2008.

 

Kwong A.K.L., Lee P.K.K. and Tam C.C.Y., Methodology to measure roughness of Hong Kong granite using 3D laser scanning technique, In: HKIE, HKIE Geotechnical Division Annual Seminar . 2008.

 

Researcher : Tang Z

List of Research Outputs

 

Ng T.S.T. and Tang Z., Delineating the predominant criteria for subcontractor appraisal and their latent relationships, Construction Management and Economics. Hampshire, UK, Taylor & Francis Limited, 2008, 26(3): 249-259.

 

Tang Z. and Ng T.S.T., To devise a subcontractor performance appraisal framework by learning from existing practices, In: C.P. Lima & M. Bauer, Proceedings: 3rd International Conference on Information and Knowledge Management (CIB W102), October 16-18, Fraunhofer-Informationszentrum Raum und Bau IRB, Stuttgart, Germany. 2007, 204-212.

 

Researcher : Tham LG

Project Title:

Field monitoring and modeling of hydrological processes of a hillslope prone to landsliding

Investigator(s):

Tham LG

Department:

Civil Engineering

Source(s) of Funding:

Competitive Earmarked Research Grants (CERG)

Start Date:

10/2005

 

Abstract:

The primary objective of this project is to enhance our understanding of the hydrological processes of hillslopes that are prone to landslide by: a) To select a suitable hillslope of Hong Kong that is considered to be prone to landslide and to monitor the hydrological processes and the resulting possible movement of the hillslope; b) To conduct field and laboratory tests to obtain the pertinent parameters for predicting the hillslope hydrological processes and ground movement; c) To quantify the effects of bedrock topography, bedrock groundwater, and spatial variability of colluvial thickness on hillslope hydrological processes; d) To examine the spatial-temporal variability of pore pressure at the hillslope based on the monitoring data; e) To examine the influence of antecedent rainfall on hillslope response and the effect of rainfall intensity-durations on hydrological processes; and f) To develop a hydrological model with which the hydrological response can be predicted with due consideration of 3D effects of bedrock topography and spatial variability of colluvial thickness.

 

Project Title:

Landslide induced wave in reservoir district and its effects on dams

Investigator(s):

Tham LG, Au ASK

Department:

Civil Engineering

Source(s) of Funding:

Competitive Earmarked Research Grants (CERG)

Start Date:

09/2006

 

Abstract:

(1) Purposes of the project : Reservoir created in the upstream of a hydropower station will submerge acres of land. As the change in the hydrological condition could have adverse effects on the slopes along the bank of the reservoir, the slopes may fail and plunge into the reservoir inducing huge waves. These waves will impact on the downstream dam and could damage and (or) overtop the dam, threatening the downstream populations. As the process is very complex, much efforts were made on this field but a survey of the recent literature reveals that most of the studies focused on the initiation of wave by assuming impulses due to the landslide and propagation of the wave. (2) Objectives of the project : To fully understand the mechanics of such hazard, a tool capable of simulating the whole process is necessary. It is on this background that the present project is conceived. In this project, we will address the above-mentioned hazard by developing a numerical model to simulate the process: (1) slope failure and the movement of the sliding body; (2) generation of water wave; (3) propagation of the wave; and (4) the interaction between the dam and the wave. Physical model tests will also be carried out to validate the numerical model. (3) Outcomes of the project : The developed numerical model can serve as a tool in the analysis of water wave induced by landslides in the reservoir district and the effects of such wave on the dams. The information is useful in the design of dams of hydropower stations and the assessment of risk associated with such hazard on human life as well as properties. Therefore, rational land use and development plans can then be formulated. Furthermore, it can be easily extended to analyze other fluid-structure interaction problems.

 

List of Research Outputs

 

Cheung Y.K., Tham L.G. and Au F.T.K., Some Aspects of the Development of Structural Engineering and Computational Mechanics in Mainland China and Hong Kong, Invited Paper, Proceedings of The Institution of Structural Engineers’ Centenary Conference – ‘Turning Ideas into Reality’” 24-26 January 2008, Hong Kong. London, UK, The Institution of Structural Engineers, 2008, 56-67.

 

Kwong A.K.L., Han X., Lee C.F., Tham L.G., Lee P.K.K. and Zhao W.B., The application of automatic data collection and wireless transmission technique to the monitoring of geotechnical problems. , Journal of Sichuan University (Engineering Science Edition). . 四川大学学报（工程科学版）, 2007.

 

Kwong A.K.L., Han X., Tham L.G. and Zhao W.B., Variation law of pore water pressure in soil improved by underwater vacuum preloading method., 自动數据采集和无線傳輸技朮在岩土工程監測中的應用[J], In: Chen Sheng-shui, Chinese Journal of Geotechnical Engineering. 四川大学学報(工程科学版), Nanjing Hydraulic Research Institute, 2007, 30: 658-662.

 

Li J., Tham L.G., Junaideen S.M., Yue Q.Z.Q. and Lee C.F., Loose fill slope stabilization with soil nails: Full-scale test, Journal Of Geotechnical And Geoenvironmental Engineering. USA, ASCE, 2008, 134(3): 277-288.

 

To C.Y., Tham L.G. and Zhou Y., An elasto-plastic model for saturated loosely compacted completely decomposed granite, Geomechanics and Geoengineering: An International Journal. Taylor & Francis, 2008, 3: 13-25.

 

Yang J., Tham L.G., Lee P.K.K. and Yu F., Observed performance of long steel H-piles jacked into sandy soils: Closure, Journal of Geotechnical and Geoenvironmental Engineering, ASCE. 2007, 133(7): 898-901.

 

Researcher : To CY

List of Research Outputs

 

To C.Y., Tham L.G. and Zhou Y., An elasto-plastic model for saturated loosely compacted completely decomposed granite, Geomechanics and Geoengineering: An International Journal. Taylor & Francis, 2008, 3: 13-25.

 

To C.Y. and Young B., Fire Resistance of Fixed-Ended Stainless Steel Tubular Columns, Proceedings of the 11th International Conference on Civil, Structural and Environmental Engineering Computing. 2007, 146, 1-14.

 

Researcher : Tong CO

Project Title:

A planning tool for multi-modal transportation systems

Investigator(s):

Tong CO, Wong SC

Department:

Civil Engineering

Source(s) of Funding:

Competitive Earmarked Research Grants (CERG)

Start Date:

12/2003

 

Abstract:

To establish an overall framework for the development of a planning tool for multi-modal transporation systems.

 

Project Title:

A dynamic model of a multimodal transportation system under congestion road pricing

Investigator(s):

Tong CO, Wong SC

Department:

Civil Engineering

Source(s) of Funding:

Competitive Earmarked Research Grants (CERG)

Start Date:

01/2007

 

Abstract:

1. To develop a dynamic network model that can accurately predict the movements of cars, taxis and buses in a congested network. It has been demonstrated by several researchers that in a congested network, when there is queue formation and spillback of traffic, static models or dynamic models that have no spatial interaction function could not predict traffic conditions accurately and therefore are not suitable tools for evaluating the impacts of road pricing schemes.2. To predict the multi-class, multi-criteria, user equilibrium condition in a dynamic congested road network with road pricing. Under the influence of road pricing, travelers go through an adjustment process. They might change their departure time, mode choice or route choice in order to avoid paying the toll. A new equilibrium point is reached when no traveler can benefit further by changing departure time, mode or route. In this context, maximizing benefit is equivalent to minimizing a generalized cost function consisting of travel cost, travel time and schedule delay components. Surveys could be carried out to measure how people make tradeoffs between travel cost, travel time and schedule delay.3. To predict the impacts of alternative road pricing schemes on taxi operations. Taxis are an important mode of travel in most modern cities. When road pricing is implemented, some schemes exempt taxis while others do not. If taxis are exempt, there might be a high concentration of taxis in congested areas and then the effectiveness of road pricing would be reduced. However, if taxis are not exempt, their revenue might be reduced and taxi services would deteriorate. It is important therefore to be able to accurately assess how different schemes affect the operation of taxis. Prediction of the behavior of vacant taxis is a particularly difficult problem and will be addressed in this study.4. To predict the impacts of alternative road pricing schemes on bus operations. Compared to travel by car or taxi, travel by bus will result in a more economical utilization of road space. However, to attract customers, buses need to operate to a regular and frequent schedule and be competitively priced, which are difficult to achieve when the roads are congested. The impact on bus operations is an important aspect of road pricing strategy evaluation.5. To develop a flexible model that can be used to test and evaluate alternative road pricing strategies. Because of advancements in vehicle detection technologies and auto-toll payment systems, road pricing schemes could become very complex and variable. Apart from cordon tolling systems, there are area-based schemes, with flat or step tolls. Tolls could also be time varying, depending on the congestion level, or differentiating, depending on the vehicle type. For area-based schemes, new minimum path algorithms have to be invented to predict the route choice of travelers.(6) Long-term impact: In order to provide an efficient, effective and sustainable transportation system, many cities are considering using road pricing as an alternative to building more roads. At present, there is no suitable transport model that can accurately predict the impacts of road pricing. This study will develop a planning tool for the testing and assessment of alternative road pricing strategies to be implemented in a multi-modal transportation system.

 

List of Research Outputs

 

Tan M.C., Tong C.O., Wong S.C. and Xu J., An algorithm for finding reasonable paths in transit networks, Journal of Advanced Transportation. Calgary, Canada, Institute for Transportation Inc., 2007, 41: 285-305.

 

Tong C.O., Bus network design taking into account car-bus interactions in a dynamic congested road network, Paper presented at the "Methodologies for Sustainable Transport" workshop organized by Kobe University, 5 June, Hokkaido, Japan. 2008.

 

Tong C.O., The reliability of a simulation-based dynamic trip assignment model, Proceedings of the 12th International Conference of the Hong Kong Society for Transportation Studies, 8-10 December, Hong Kong. 2007, 535-544.

 

Researcher : Tsang HH

List of Research Outputs

 

Iqbal J., Tsang H.H. and Mehmood H., Seismic Considerations in Designing an Underground Shell Structure, First International Conference on Modern Design, Construction and Maintenance of Structures. 2007.

 

Lam N., Tsang H.H., Wilson J. and Sabegh S., On Engineering for Intraplate Earthquakes, First International Conference on Modern Design, Construction and Maintenance of Structures. 2007.

 

Sheikh M.N., Legeron F., Tsang H.H., Lam N. and McCarthy T., Earthquake Engineering for Transportation Network in Low to Moderate Seismicity Regions, Australian Earthquake Engineering Society (AEES) Annual Technical Conference. 2007.

 

Su K.L. and Tsang H.H., Invited Technical Meeting on Lessons Learnt from the Sichuan Earthquake, at the Headquarters of The Hong Kong Institution of Engineers on 3 June 2008. 2008.

 

Tsang H.H., Su K.L. and Lam N.T.K., Displacement-based Seismic Assessment Procedure for Existing Building Structures, First International Conference on Modern Design, Construction and Maintenance of Structures. 2007.

 

Tsang H.H., Hsai-Yang Fang Research Award, International Society of Environmental Geotechnology (ISEG). 2008.

 

Tsang H.H., Li Ka Shing Prize, The University of Hong Kong. 2007.

 

Tsang H.H., Norman W. M. Ko Ph.D. Prize, The University of Hong Kong. 2007.

 

Tsang H.H., Sheikh M.N. and Lam N.T.K., Rubber-Soil CUSHION for Earthquake Protection, Australian Earthquake Engineering Society (AEES) Annual Technical Conference. 2007.

 

Tsang H.H., Seismic Isolation by Rubber-Soil Mixtures for Developing Countries, Earthquake Engineering and Structural Dynamics. 2008, 37: 283-303.

 

Tsang H.H., Sichuan Earthquake and Design Standards, Sowers Action, Hong Kong . 2008.

 

Tsang H.H., Understanding Earthquake Disaster, Sowers Action, Hong Kong. 2008.

 

Tsang H.H., Fong H.Y., Xu X. and Lo S.H., Utilization of Scrap Tires for Earthquake Hazard Mitigation, Ninth International Symposium on Environmental Geotechnology and Global Sustainable Development. 2008.

 

Venkatesan S., Sheikh M.N., Tsang H.H. and Lam N., Effects of Vertical Heterogeneity of Soil Sediments on Seismic Soil Response, Australian Earthquake Engineering Society (AEES) Annual Technical Conference. 2007.

 

Researcher : Ugwu OO

List of Research Outputs

 

Kumaraswamy M.M., Rahman M.M., Ekambaram P., Ugwu O.O., Anvuur A.M. and Yogeswaran K., Multi-Disciplinary and Multi-Functional Teams in PPP Procurement & Delivery, In: K. London, G. Thayarapan and J. Chen, CIB W092 Procurement Systems Conference on ‘Building across Borders’. Newcastle, Australia, CIB and University of Newcastle, 2007, 250-262.

 

Ng T.S.T., Fang Y. and Ugwu O.O., Modeling construction material logistics system with stochastic Petri nets, Construction Innovation – Information, Process, Management. Bingley, UK, Emerald, 2008, 8(1): 46-60.

 

Ugwu O.O. and Ng T.S.T., Towards a framework for durability design and life cycle costing of infrastructure projects, In: M. Lacasse, Proceedings: 11th International Conference on Durability of Building Materials and Components (11 DBMC), May 11-14, Lutfi Kirdar Istanbul Convention & Exhibition Centre, Istanbul, Turkey. 2008, 8 pages.

 

Researcher : Wan KM

List of Research Outputs

 

Wan K.M. and Kumaraswamy M.M., Applying Industrial Management principles for improving Material Control practices in Building Services work, International Conference on Waste Engineering and Management, 28-30 May, Hong Kong, Canadian Society for Civil Engineering and The Hong Kong Instn. of Engineers. Hong Kong, e Hong Kong Instn. of Engineers, 2008, 1-12.

 

Wan K.M., Industrial management approaches for proofing quality works, Seminar on uplifting construction quality in building services sector. Hong Kong, Hong Kong Federation of Electrical and Mechanical Contractor, 2008.

 

Wan K.M., Industrial planning for managing quality and coordinated building services projects, 5th Asian Quality Congress and ANQ Congress. Seoul, Korea, Korean Society for Quality Management, 2007, 797-803.

 

Researcher : Wang X

List of Research Outputs

 

Wang X. and Li X.Y., Accumulation of biopolymer clusters in a submerged membrane bioreactor and its effect on membrane fouling, Water Research. 2008, 42: 855-862.

 

Wang X., Chen W. and Li X.Y., Membrane bioreactor (MBR) for an innovative biological nitrogen removal process, The 6th International Membrane Science and Technology Conference (IMSTEC), Sydney, Australia. Sydney, Australia, 2007.

 

Researcher : Wang Y

List of Research Outputs

 

Wang Y., Li X.Y. and Lee J.H.W., Influence of the biomass content in sediment on the sediment nutrient flux for a pulsed organic load. Modelling of the sediment oxygen demand and organic flux for a pulsed sediment organic load, Marine Pollution Bulletin. 2008, 57: 681-688.

 

Wang Y., Li X.Y. and Lee J.H.W., Modelling of sediment nutrient fluxes for a pulsed organic load, 3rd International Conference on Environmental Science and Technology, the American Academy of Sciences, Houston, Texas, USA. Houston, Texas, USA, 2007.

 

Wang Y. and Li X.Y., Modelling of sediment nutrient fluxes for a pulsed organic load, The 6th Forum of China Young Leading Scholars in Environmental Science and Technology, Xian, China. Xian, China, 2007.

 

Xu X., Wang Y. and Li X.Y., Sorption behavior of bisphenol A on marine sediments, J. Environmental Science and Health, Part A. 2008, 43: 239-246.

 

Researcher : Wong CKC

List of Research Outputs

 

Lee J.H.W., Yu D., Wong C.K.C. and Choi D.K.W., Drainage Improvement in Northern Hong Kong Island Hong Kong West Tunnel and Lower Catchment Improvement – Investigation: Additional Model Testing of Intake Model – Part A. Lateral Inflow Structure, Part B. M3 Intake, 2008.

 

Yu D., Lee J.H.W. and Wong C.K.C., Hydraulic Model Study of Stepped Drainage Channel with Sharp Bend and Trash Grills, The fifth International Symposium on Environmental Hydraulics. 2007.

 

Yu D., Lee J.H.W. and Wong C.K.C., Measurement of Supercritical Air-Water Bottom Rack Flow, Hydraulic Measurements and Experimental Methods. 2007.

 

Researcher : Wong HC

List of Research Outputs

 

Kwan A.K.H. and Wong H.C., Effects of packing density, excess water and solid surface area on flowability of cement paste, Advances in Cement Research. 2008, 20(1): 1-11.

 

Kwan A.K.H. and Wong H.C., Water film thickness: a fundamental parameter governing rheology of self-consolidating concrete (invited paper), Proceedings, 1st Cross-Strait Conference on Concrete Technology, Taiwan, November. 2007, 63-74.

 

Wong H.C. and Kwan A.K.H., Packing density of cementitious materials: measurement and modelling, Magazine of Concrete Research. 2008, 60(3): 165-175.

 

Wong H.C. and Kwan A.K.H., Packing density of cementitious materials: part 1 - measurement using a wet packing method, Materials and Structures. 2008, 41(4): 689-701.

 

Wong H.C. and Kwan A.K.H., Rheology of cement paste: role of excess water to solid surface area ratio, Journal of Materials in Civil Engineering, American Society of Civil Engineers. 2008, 20(2): 189-197.

 

Researcher : Wong JMW

List of Research Outputs

 

Fan Y.C., Ng T.S.T. and Wong J.M.W., A study of forecasting the Hong Kong construction demand, In: W. Hughes, Proceedings: Construction Management and Economics 25th Anniversary Conference, July 16-18, University of Reading, Reading, UK. 2007, 12 pages.

 

Ng T.S.T., Chan A.P.C., Wong J.M.W., Chiang Y.H., Hui E.C.M. and Kumaraswamy M.M., Development Strategy for Professional Resources of Hong Kong’s Construction and Related Engineering Services Sector – Inception Report, A Report Submitted to the Development Bureau, Government of HKSAR. 2007, 30 pages.

 

Ng T.S.T., Chan A.P.C., Wong J.M.W., Chiang Y.H., Hui E.C.M., Kumaraswamy M.M. and Fan Y.C., Development Strategy for Professional Resources of Hong Kong’s Construction and Related Engineering Services Sector – Interim Report, A Report Submitted to the Development Bureau, Government of HKSAR. 2008, 202 pages.

 

Ng T.S.T., Lee C.F., Baldwin A.N., Chan A.P.C., Chiang Y.H., Kumaraswamy M.M., Lam P.T.I., Lee P.K.K. and Wong J.M.W., Reinventing the Hong Kong Construction Industry for its Sustainable Development – Final Report, A Report Submitted to the Construction Industry Institute – Hong Kong. 2007, 338 pages.

 

Researcher : Wong MW

List of Research Outputs

 

Ng T.S.T. and Wong M.W., Integrating social aspects when evaluating the feasibility of public private partnership schemes, In: C. Kissoon, Proceedings: 12th Pacific Association of Quantity Surveyors Congress, June 16-18, Edmonton, Alberta, Canada. 2008, 8 pages.

 

Ng T.S.T. and Wong M.W., Payment and audit mechanisms for non private-funded PPP-based infrastructure maintenance projects, Construction Management and Economics. Hampshire, UK, Taylor & Francis Limited, 2007, 25(9): 915-924.

 

Researcher : Wong SC

Project Title:

Planning of a land use and transportation system with multiple market segments

Investigator(s):

Wong SC, Choi YL, Tong CO

Department:

Civil Engineering

Source(s) of Funding:

Competitive Earmarked Research Grants (CERG)

Start Date:

12/2003

 

Abstract:

To develop an integrated model and an efficient solution algorithm for land use and transportation systems; to formulate an optimization procedure for the planning of the land use and transportation systems.

 

Project Title:

Cordon-based congestion pricing in a continuum traffic equilibrium system

Investigator(s):

Wong SC, Hau TD

Department:

Civil Engineering

Source(s) of Funding:

Competitive Earmarked Research Grants (CERG)

Start Date:

01/2005

 

Abstract:

To develop a continuum traffic equilibrium model with multiple central business districts and multiple user classes; to derive the first-best congestion charging scheme for this continuum traffic equilibrium system, which forms a benchmark for the second-best congestion charging schemes to be determined; to formulate the cordon-based second-best congestion charging scheme for the continuum traffic equilibrium system.

 

Project Title:

A multi-period lane-based optimization method for signalized network with explicit consideration of spatial queues

Investigator(s):

Wong SC

Department:

Civil Engineering

Source(s) of Funding:

Competitive Earmarked Research Grants (CERG)

Start Date:

01/2006

 

Abstract:

The main objectives of this project are: 1. An extension of the lane-based optimization method to network analysis by incorporating a traffic model that can encapsulate the spatial queue propagation; and 2. Consideration of multi-period analysis in which a unique set of reliable lane markings that work well with different traffic patterns in different periods can be obtained.

 

Project Title:

Dynamic macroscopic modeling of pedestrian flows

Investigator(s):

Wong SC

Department:

Civil Engineering

Source(s) of Funding:

Competitive Earmarked Research Grants (CERG)

Start Date:

01/2007

 

Abstract:

Purpose of proposed investigation: Walking facilities are important components of transportation systems. For instance, about one-quarter of the total number of journeys and the majority of short trips less than a mile in length are made on foot in the U.K. Hong Kong is a densely populated city with about seven million people. The residential density is as high as forty thousand people per square kilometers of developed land, which results in tremendous pressure on its walking facilities. A high intensity of pedestrian activities is common in Hong Kong walking facilities such as major public transportation terminals and pedestrian crossings at busy junctions. Therefore, the effective and efficient planning and design of walking facilities are of paramount importance to sustain this environmentally friendly mode of transportation, which helps to reduce the pressure on the motorized transportation system, especially for short trips, and to improve the quality of life. Key issues and problems: The modeling of pedestrian behavior and interactions within the walking facilities and the development of efficient solution procedures are essential for the development of a useful tool to facilitate the planning and design of those facilities. Pedestrian demand is highly dynamic, and is affected by many operational factors and physical constraints of the transportation system. It is essential to develop a model that can capture this characteristic. As a pedestrian can freely move in the two-dimensional domain of the walking facility, it will be promising to adopt the continuum modeling technique, which provides the maximum flexibility in describing the pedestrian’s movement trajectory. Moreover, in many applications, pedestrians respond to the traffic condition in the system in a reactive manner, and change their routes promptly to minimize their instantaneous travel cost while walking through the facility in response to the conditions ahead of them.Objective 1: The first objective will be to develop a dynamic macroscopic pedestrian flow model in the context of reactive dynamic user equilibrium, which can capture the behavior and interactions of pedestrians in the walking facility.Objective 2: TThe second objective will be to develop efficient numerical schemes to solve the dynamic macroscopic model. Relevance, significance and value: This research will help in the understanding of the behavior and interactions of pedestrians in walking facilities in the dynamic paradigm. The pedestrian model and numerical procedures will provide a useful tool for the planning and design of walking facilities. The results will help to visualize the evolution of the level-of-service of the walking facility, and report the movement trajectories of pedestrians and their interactions within the walking facility, which will be useful for the evaluation of the effectiveness of facility design, and the identification of critical locations that needs special attention.

 

Project Title:

Optimization theory and technology

Investigator(s):

Wong SC

Department:

Civil Engineering

Source(s) of Funding:

Matching Fund for NSFC Young Researcher Award

Start Date:

01/2007

Completion Date:

12/2009

 

Abstract:

To study optimization theory and technology.

 

List of Research Outputs

 

Chan K.S., Lam W.H.K., Ouyang L.Q. and Wong S.C., Simultaneous estimation of the pedestrian origin-destination matrix and parameter of the activity/destination choice, Journal of the Eastern Asia Society for Transportation Studies. Japan, Eastern Asia Society for Transportation Studies, 2007, 7: 1760-1773.

 

Chan K.S., Lam W.H.K., Ouyang L.Q. and Wong S.C., Simultaneous estimation of the pedestrian origin-destination matrix and parameter of the activity/destination choice, Paper presented at the Seventh Conference of the Eastern Asia Society for Transportation Studies, 24-27 September, Dalian, China.. 2007.

 

Chen A., Zhou Z., Chootinan P. and Wong S.C., Optimizing capacity reliability and travel time reliability in the network design problem, Proceedings of the Twelve International Conference of Hong Kong Society for Transportation Studies, 8-10 December, Hong Kong. Hong Kong, Hong Kong Society for Transportation Studies Ltd., 2007, 223-232.

 

Chen W., Wong S.C. and Shu C.W., Efficient implementation of the shock-fitting algorithm for the Lighthill-Whitham-Richards traffic flow model, International Journal for Numerical Methods in Engineering. Chichester, England, Wiley, 2008, 74: 554-600.

 

Ho H.W., Wong S.C. and Hau T.D., A multi-class congestion pricing problem in a continuum transportation system, Journal of the Eastern Asia Society for Transportation Studies. Japan, Eastern Asia Society for Transportation Studies, 2007, 7: 238-253.

 

Ho H.W., Wong S.C. and Hau T.D., A multi-class congestion pricing problem in a continuum transportation system, Paper presented at the Seventh Conference of the Eastern Asia Society for Transportation Studies, 24-27 September, Dalian, China.. 2007.

 

Ho H.W., Wong S.C. and Hau T.D., Theoretical bounds of congestion-pricing efficiency for a continuum transportation system, In: R.E. Allsop, M.G.H. Bell and B.G. Heydecker, Transportation and Traffic Theory 2007. London, Elsevier Ltd., 2007, 263-280.

 

Li L.M.J., Wong S.C., Loo B.P.Y. and Hau T.D., Preliminary findings on empirical analysis of work trip scheduling in Hong Kong, Proceedings of the Twelfth International Conference of Hong Kong Society for Transportation Studies, 8-10 December, Hong Kong. Hong Kong, Hong Kong Society for Transportation Studies Ltd., 2007, 69-77.

 

Li Z.C., Lam W.H.K., Wong S.C., Zhu D.L. and Huang H.J., Modeling park-and-ride services in a multimodal transport network with elastic demand, Transportation Research Record. Washington D.C., Transportation Research Board, 2007, 1994: 101-109.

 

Li Z.C., Lam W.H.K. and Wong S.C., Modeling the effects of the number of operators in a deregulated transit market, Proceedings of the Twelve International Conference of Hong Kong Society for Transportation Studies, 8-10 December, Hong Kong. Hong Kong, Hong Kong Society for Transportation Studies Ltd., 2007, 641-650.

 

Li Z.C., Huang H.J., Lam W.H.K. and Wong S.C., Time-differential pricing of road tolls and parking charges in a transport network with elastic demand, In: R.E. Allsop, M.G.H. Bell and B.G. Heydecker, Transportation and Traffic Theory 2007. London, Elsevier Ltd., 2007, 55-85.

 

Loo B.P.Y., Leung B.S.Y., Wong S.C. and Yang H., Taxi license premiums in Hong Kong: can their fluctuations be explained by taxi as a mode of public transport?, International Journal of Sustainable Transportation. Philadelphia, USA, Taylor and Francis, 2007, 1: 249-266.

 

Lu Y., Wong S.C., Zhang M., Shu C.W. and Chen W., Explicit construction of entropy solutions for the Lighthill-Whitham-Richards traffic flow model with a piecewise quadratic flow-density relationship, Transportation Research Part B. New York, Elsevier Science Ltd., 2008, 42: 355-372.

 

Sun W., Wong S.C., Zhang P. and Shu C.W., A shock-fitting algorithm for the LWR model on inhomogeneous highways, Paper presented at the Tenth International Conference on Application of Advanced Technologies in Transportation, 27-31 May, Athens, Greece. 2008.

 

Sze N.N. and Wong S.C., Diagnostic analysis of the logistic model for pedestrian injury severity in traffic crashes, Accident Analysis and Prevention. New York, Pergamon Press, 2007, 39: 1267-1278.

 

Sze N.N., Wong S.C. and Chan W.F., Traffic crashes at toll plazas in Hong Kong, Proceedings of the Institution of Civil Engineers, Transport. London, ICE, 2008, 161: 71-76.

 

Tan M.C., Tong C.O., Wong S.C. and Xu J., An algorithm for finding reasonable paths in transit networks, Journal of Advanced Transportation. Calgary, Canada, Institute for Transportation Inc., 2007, 41: 285-305.

 

Tang T.Q., Huang H.J., Gao Z.Y. and Wong S.C., Interactions of waves in the speed-gradient traffic flow model, Physica A. New York, ScienceDirect, 2007, 380: 481-489.

 

Wong C.K., Wong S.C. and Lo H.K., A cell transmission model for signal timing optimisation in work zones, In: B.G. Heydecker, Mathematics in Transport. The Netherlands, Elsevier Ltd., 2007, 307-319.

 

Wong C.K., Wong S.C. and Lo H.K., Reserve capacity of a signal-controlled network considering the effect of physical queuin, In: R.E. Allsop, M.G.H. Bell and B.G. Heydecker, Transportation and Traffic Theory 2007. London, Elsevier Ltd., 2007, 533-553.

 

Wong S.C., Associate Editor, IEEE Transactions on Intelligent Transportation Systems. N.J., U.S.A., IEEE, 2007.

 

Wong S.C., Associate Editor, Journal of Advanced Transportation. Calgary, Canada, Institute for Transportation, 2007.

 

Wong S.C., Wong C.W. and Sze N.N., Attitudes of public light bus drivers to penalties to combat red light violations in Hong Kong, Transport Policy. New York, ScienceDirect, 2008, 15: 43-54.

 

Wong S.C., Sze N.N. and Li Y.C., Contributory factors to traffic crashes at signalized intersections in Hong Kong, Accident Analysis and Prevention. New York, Pergamon Press, 2007, 39: 1107-1113.

 

Wong S.C., Editioral Board, The Open Transportation Journal. Bentham Science Publishers Ltd., 2007.

 

Wong S.C., Editor-in-Chief, International Journal of Sustainable Transportation. Philadelphia, USA, Taylor and Francis, Inc., 2007.

 

Wong S.C., Editor-in-Chief, Transportmetrica. Hong Kong, Hong Kong Society for Transportation Studies, 2007.

 

Wong S.C., Editorial Board, ASCE Journal of Urban Planning and Development. New York, ASCE, 2007.

 

Wong S.C., Editorial Board, Journal of Intelligent Transportation Systems. Philadelphia, Taylor and Francis, Inc., 2007.

 

Wong S.C., Editorial Board, Journal of Transportation Systems Engineering and Information Technology. Beijing, Science Press, 2007.

 

Wong S.C., Editorial Board, Transportation Research Part B. New York, Pergamon Press, 2007.

 

Wong S.C., Sze N.N. and Li Y.C., Traffic crashes at signalized intersections, Paper presented at the Twelve International Conference of Hong Kong Society for Transportation Studies, 8-10 December, Hong Kong. Hong Kong, 2007.

 

Xia Y., Huang L., Wong S.C., Zhang M., Shu C.W. and Lam W.H.K., The follow-the-crowd effect in a pedestrian flow model, Proceedings of the Twelve International Conference of Hong Kong Society for Transportation Studies, 8-10 December, Hong Kong. Hong Kong, Hong Kong Society for Transportation Studies Ltd., 2007, 309-317.

 

Xu R.Y., Zhang P., Dai S.Q. and Wong S.C., Admissibility of a wide cluster solution in “anisotropic” higher-order traffic flow models, SIAM Journal on Applied Mathematics. Philadelphia, Society for Industrial and Applied Mathematics, 2007, 68: 562-573.

 

Researcher : Wong SM

List of Research Outputs

 

Su K.L. and Wong S.M., A survey on axial load ratios of structural walls in medium-rise residential buildings in Hong Kong, Transactions of Hong Kong Institution of Engineers. Hong Kong, The Hong Kong Institution of Engineers, 2007, 14(3): 40-46.

 

Su K.L. and Wong S.M., Seismic behaviour of slender reinforced concrete shear walls under high axial load ratio, Engineering Structures. Oxford, Elsevier Science Ltd., 2007, 29(8).

 

Researcher : Wong SS

List of Research Outputs

 

Hong H.P., Wong S.S. and Kwan A.K.H., Impact of uncertain natural vibration period on quantile of seismic demand, Structural Engineering and Mechanics. 2008, 28(4): 357-372.

 

Researcher : Wu J

List of Research Outputs

 

Cheng T.Y.W., Soo K.L., Kumaraswamy M.M. and Wu J., Are there ways to ensure fair and prompt payment?, Lighthouse Club Conference on “Security of Payment in the Construction Industry”, 21 Nov. 2007. Hong Kong, Lighthouse Club, 2007, 1-14.

 

Soo K.L., Kumaraswamy M.M. and Wu J., Contractor’s Right to Stop Work on Non-Payment: A Comparative Perspective from Hong Kong, In: R. Haigh and D. Amaratunga, CIB W89 ‘Building Education & Research’ Conference, BEAR 2008 on ‘Building Resilience’, Sri Lanka. UK, CIB and Univ. of Salford, 2008, 1263-1273.

 

Wu J., Kumaraswamy M.M. and Soo K.L., Regulations affecting Construction Procurement in Mainland China, BuHu 8th International PGR Conference, June 26-27, Prague, . Czech Republic, Czech Technical University in Prague, 2008, 265-274.

 

Researcher : Wu Y

List of Research Outputs

 

Chen J. and Wu Y., Exploring hydrological process features of the East River (Dongjiang) basin in South China using VIC and SWAT, In: Xiaohong Chen, Yongqin David Chen, Jun Xia and Hailun Zhang, the IAHS Red Books. Oxford, UK, IAHS Press, 2008, 319: 116-123.

 

Chen J., Lee P., Niu J. and Wu Y., Simple equations for evaluating rainwater collection capcity in Hong Kong at different temporal scales, the 7th Shenzhen, Hong Kong, Zhuhai and Macao seminar on Water Supply. 2007, 242-247.

 

Cui W.Z., Chen J., Wu Y. and Wu Y.D., An overview of water resources management of the Pearl River, In: Gustaf Olsson, Professor Emeritus, Lund University, Sweden, Water Science and Technology: Water Supply. IWA Publishing, 2007, 7: 101-113.

 

Wu Y., Chen J. and Jayawardena A.W., Establishing a physically-based representation of groundwater re-evaporation parameter in SWAT, In: Les Oxley and Don Kulasiri, MODSIM07 International Congress on Modelling and Simulation. 2007, 1423-1428.

 

Wu Y., Chen J. and Sivakumar B., Numerical Modeling of Operation and Hydrologic Effects of Xinfengjiang Reservoir in Southern China, In: Les Oxley and Don Kulasiri, MODSIM07 International Congress on Modelling and Simulation. 2007, 1561-1567.

 

Researcher : Wu Z

List of Research Outputs

 

Lo S.H., Wu Z., Cheung Y.K. and Chen W., An enhanced global-local higher order theory for the free edge effect in laminates, Composite Structures. 2007, 81(4): 499-510.

 

Wu Z., Cheung Y.K., Lo S.H. and Chen W., Effects of higher-order global-local shear deformations on bending, vibration and buckling of multilayered plates, Journal of Composite Structures. 2008, 82(2): 277-289.

 

Wu Z., Cheung Y.K., Lo S.H. and Chen W., Thermal stress analysis for laminated plates using actual temperature field, International journal of mechanical sciences, NOV 2007. 2007, 49(11): 1276-1288.

 

Researcher : Xia Y

List of Research Outputs

 

Xia Y., Huang L., Wong S.C., Zhang M., Shu C.W. and Lam W.H.K., The follow-the-crowd effect in a pedestrian flow model, Proceedings of the Twelve International Conference of Hong Kong Society for Transportation Studies, 8-10 December, Hong Kong. Hong Kong, Hong Kong Society for Transportation Studies Ltd., 2007, 309-317.

 

Researcher : Xiao F

List of Research Outputs

 

Xiao F., Li X.Y. and Lam K.M., Investigation of the hydrodynamic behaviour of particles and aggregates by particle image velocimetry (PIV), IWA International Conference on Particle Separation, Toulouse, France. Toulouse, France, 2007.

 

Xiao F., Li X.Y. and Lam K.M., Investigation of the hydrodynamic behaviour of particles and aggregates by particle image velocimetry (PIV), Water Science and Technology: Water Supply. 2007, 7(2): 213-220.

 

Xiao F. and Li X.Y., Modelling the kinetics of aggregate breakage using improved breakage kernel, IWA International Conference on Particle Separation, Toulouse, France. Toulouse, France, 2007.

 

Xiao F., Li X.Y. and Lam K.M., The Best Poster Award, IWA International Conference on Particle Separation, Toulouse, France. 2007.

 

Researcher : Xie J

List of Research Outputs

 

Ng T.S.T., Xie J. and Cheung Y.K., A fuzzy simulation model for evaluating the concession items of public-private partnerships schemes, Automation in Construction. Amsterdam, Holland, Elsevier, 2007, 17(1): 22-29.

 

Ng T.S.T. and Xie J., A simulation model for evaluating the tariff stability of concession-based PPP proposals, Construction Innovation – Information, Process, Management. Bingley, UK, Emerald, 2008, 8(2): 106-119.

 

Ng T.S.T., Xie J., Cheung Y.K. and Jefferies M., A simulation model for optimizing the concession period of public-private partnerships schemes, International Journal of Project Management. Exeter, UK, Elsevier Science Ltd., 2007, 25(8): 791-798.

 

Researcher : Xie L

List of Research Outputs

 

Au F.T.K., Jiang R., Leung C.C.Y., Xie L., Lee P.K.K., Wong K.Y. and Chan W.Y., Development and calibration of finite element models for structural health monitoring of Ting Kau Bridge, Invited Lecture, In: Y B Yang and J D Yau, Proceedings of International Symposium on Environmental Vibrations (ISEV 2007), Taipei, Taiwan, November 28-30, 2007. Taiwan, National Taiwan University, 559-566.

 

Researcher : Xu X

Project Title:

Removal of Chromium(VI) from Wastewater using the Food Industrial Waste as a Biosorbent

Investigator(s):

Xu X, Li XY

Department:

Civil Engineering

Source(s) of Funding:

Small Project Funding

Start Date:

11/2006

 

Abstract:

- Objectives:To find a more economic and highly effective biosorbent from food industry wastes such as fish scales, for the removal of Cr(VI) from wastewater discharge. That is, wastewater containing toxic Cr(VI) will be treated using another waste material.(1) To evaluate the adsorption capacity of several kinds of fish scales for Cr(VI);(2) To investigate the effects of pH, particle size and adsorbent dosage on the adsorption bahavior;(3) To study the adsorption isotherm, kinetics and mechanism; (4) To operate the biosorption process in a continueous flow packed column.- Key issues and problem:The widespread use of chromium has engendered it a serious environmental pollutant in air, soil and water. Both chromate and dichromate are mutagenic and carcinogenic to humans, animals, plants and microorganisms. Consequently, strict environmental regulations on the discharge of Cr(VI) make it necessary to develop various efficient technologies for its removal. Several techniques have been proposed for the removal of Cr(VI) from industrial wastewater effulents. These include chemical precipitation, ion exchange, membrane separation and reduction (Xu et al., 2005). Although the effectiveness of these methods has been demonstrated, they suffer from a major drawback, namely lack of cost-effectiveness (Xu et al., 2006).Biosorption has been considered as a promising technology for the removal of toxic heavy metals from wastewater. Compared with conventional methods, the biosorption process offers advantages of low operating cost, minimization of the chemical and/or biological sludge to be disposed of, high efficiency in detoxifying very dilute effluents, and no nutrient (Kratochvil and Volesky, 1998). For example, the skin of animal and modified collagen fiber have been used as biosorbents for the removal of chromium(VI), fluoride and UO2[2+] from wastewater (Fathima et al., 2005; Liao et al., 2004; Liao and Shi, 2005). This has prompted us to hypothesize that other biomasses containing collagen can also be used as biosorbents for removal of chromium(VI) from wastewater.Fish scales are waste from food industry, and produced in great amount in many places, such as Hong Kong. Because fish scales contain plenty of collagen, it may be used as a biosorbent for the removal of heavy metals. In the literature, fish scales have been used for the removal of heavy metal cations, such as lead and cobalt (Basu et al., 2006). However, no paper has been published on the removal of Cr(VI) by adsorption of fish scales. The collagen contains carboxyl groups capable of coordinately binding with transition metal cations. For the removal of chromium(VI), the adsorbent has to be modified so as to enable it to bind with the anionic chromium(VI). The present project is proposed to investigate biosorption of chromium(VI) on modified fish scales.References:Fathima N.N., Aravindhan R., Rao J.R. and Nair B.U. (2005) Solid waste removes toxic liquid waste: adsorption of chromium (VI) by iron complexed protein waste. Environmental Science & Technology 39: 2804-2810.Kratochvil D. and Volesky B. (1998) Advances in the biosorption of heavy metals. Trends in Biotechnology 16: 291-300.Liao X.P., Lu Z.B., Du X., Liu X. and Shi B. (2004) Collagen fiber immobilized myrica rubra tannin and its adsorption to UO2[2+]. Environmental Science & Technology 38: 324-328.Liao X.P. and Shi B. (2005) Adsorption of fluoride on Zirconium(IV)-impregnated collagen fiber. Environmental Science & Technology 39: 4628-4632.Basu A., Mustafiz S., Islam M.R., Bjorndalen N., Rahaman M.S. and chaalal O. (2006) A comprehensive approach for modeling sorption of lead and cobalt ions through fish scales as an adsorbent. Chemical Engineering Communications 193: 580-605.Xu X.R., Li H.B., Gu J.D. and Li X.Y. (2005) Kinetics of the reduction of chromium(VI) by vitamin C. Environmental Toxicology and Chemistry 24: 1310-1314Xu X.R., Li H.B. and Gu J.D. (2006) Simultaneous decontamination of hexavalent chromium and methyl tert-butyl ether by UV/TiO2 process. Chemosphere 63: 254-260.

 

List of Research Outputs

 

Li H., Xu X. and Chen S.F., Determination of iodine in seawater: methods and applications, In: Victor R Preedy, Gerard N. Burrow and Ronald Ross Watson , Comprehensive Handbook of Iodine: Nutritional, Biochemical, Pathological and Therapeutic Aspects. Academic Press, 2007.

 

Tsang H.H., Fong H.Y., Xu X. and Lo S.H., Utilization of Scrap Tires for Earthquake Hazard Mitigation, Ninth International Symposium on Environmental Geotechnology and Global Sustainable Development. 2008.

 

Xu X. and Li X.Y., Adsorption behaviour of dibutyl phthalate on marine sediments, Marine Pollution Bulletin. 2008, 57: 403-408.

 

Xu X., Li H., Gu J. and Li X.Y., Kinetics and metabolic pathway of melatonin biodegradation by a bacterium isolated from the mangrove sediment. , In: Frank Columbus , Environmental Biodegradation Research Trends. 2007.

 

Xu X., Li H. and Gu J.D., Photocatalytic reduction of hexavalent chromium and degradation of di-n-butyl phthalate in aqueous TIO2 suspensions under ultraviolet light irradiation, Environmental Technology. Atlanta, USA, Green Industry Publishing, 2007, 28: 1055-1061.

 

Xu X., Wang Y. and Li X.Y., Sorption behavior of bisphenol A on marine sediments, J. Environmental Science and Health, Part A. 2008, 43: 239-246.

 

Researcher : Xu X

List of Research Outputs

 

Li H., Xu X. and Chen S.F., Determination of iodine in seawater: methods and applications, In: Victor R Preedy, Gerard N. Burrow and Ronald Ross Watson , Comprehensive Handbook of Iodine: Nutritional, Biochemical, Pathological and Therapeutic Aspects. Academic Press, 2007.

 

Tsang H.H., Fong H.Y., Xu X. and Lo S.H., Utilization of Scrap Tires for Earthquake Hazard Mitigation, Ninth International Symposium on Environmental Geotechnology and Global Sustainable Development. 2008.

 

Xu X. and Li X.Y., Adsorption behaviour of dibutyl phthalate on marine sediments, Marine Pollution Bulletin. 2008, 57: 403-408.

 

Xu X., Li H., Gu J. and Li X.Y., Kinetics and metabolic pathway of melatonin biodegradation by a bacterium isolated from the mangrove sediment. , In: Frank Columbus , Environmental Biodegradation Research Trends. 2007.

 

Xu X., Li H. and Gu J.D., Photocatalytic reduction of hexavalent chromium and degradation of di-n-butyl phthalate in aqueous TIO2 suspensions under ultraviolet light irradiation, Environmental Technology. Atlanta, USA, Green Industry Publishing, 2007, 28: 1055-1061.

 

Xu X., Wang Y. and Li X.Y., Sorption behavior of bisphenol A on marine sediments, J. Environmental Science and Health, Part A. 2008, 43: 239-246.

 

Researcher : Yan X

List of Research Outputs

 

Yang J. and Yan X., Site response to vertical earthquake motion, ASCE Specialty Conference on Geotechnical Earthquake Engineering and Soil Dynamics III. 2008.

 

Researcher : Yan Z

List of Research Outputs

 

Au F.T.K. and Yan Z., Nonlinear dynamic analysis of frames based on semi-rigid technique, In: WX Ren, H Hao and XQ Zhu, Proceedings of Second International Conference on Structural Condition Assessment, Monitoring and Improvement (SCAMI-2) 19-21 November, 2007, Changsha, China,. Beijing, Science Press, 2007, I: 302-308.

 

Yan Z. and Au F.T.K., Nonlinear dynamic analysis of frames with arbitrary plastic hinges, In: F Biondini and D Frangopol, Proceedings of First International Symposium on Life-Cycle Civil Engineering . London, CRC Press, 2008, 475-480.

 

Researcher : Yang J

Project Title:

Load settlement behaviour of piles in sandy soils

Investigator(s):

Yang J

Department:

Civil Engineering

Source(s) of Funding:

Germany/Hong Kong Joint Research Scheme

Start Date:

01/2005

 

Abstract:

To investigate the general load settlement behaviour of piles in sands, which is identified as being an area of uncertainty and hence an area of challenge in foundation engineering.

 

Project Title:

Vertical seismic site response and its effect on retaining structures

Investigator(s):

Yang J, Lee CF

Department:

Civil Engineering

Source(s) of Funding:

Competitive Earmarked Research Grants (CERG)

Start Date:

01/2005

 

Abstract:

To investigate the effect of vertical ground motion on soil response and on the seismic behaviour of earth retaining structures.

 

Project Title:

Identification of Dynamic Soil-Structure Interaction Effects on Soil Liquefaction

Investigator(s):

Yang J, Li XS

Department:

Civil Engineering

Source(s) of Funding:

Competitive Earmarked Research Grants (CERG)

Start Date:

01/2006

 

Abstract:

The main objectives of this project are: (a) to investigate dynamic SSI effects on soil liquefaction by means of physical modeling, numerical simulations and case history analyses. (b) to provide a body of physical data on soil-structure interaction at liquefiable sites, and improve understanding of the mechanisms involved in the process.

 

List of Research Outputs

 

Chi S., Guo X., Yang J. and Lin G., Study on small strain characteristics and threshold strain of dynamic Hardin-Drnevich model for soils, Chinese Journal of Geotechnical Engineering. 2008, 30(2): 243-249.

 

Qian J.G., Yang J. and Huang M.S., Three-dimensional non-coaxial plasticity modelling of shear band formation in geomaterials, Journal of Engineering Mechanics, ASCE. 2008, 134(4): 322-329.

 

Yang J., Characteristics of vertical and horizontal ground motions recorded during the Niigata-ken Chuetsu, Japan earthquake of 23 October 2004, Engineering Geology. 2007, 94(1-2): 50-64.

 

Yang J., Frequency-dependent amplification of unsaturated surface soil layer: Closure, Journal of Geotechnical and Geoenvironmental Engineering, ASCE. 2007, 133(10): 1332-1335.

 

Yang J., Tham L.G., Lee P.K.K. and Yu F., Observed performance of long steel H-piles jacked into sandy soils: Closure, Journal of Geotechnical and Geoenvironmental Engineering, ASCE. 2007, 133(7): 898-901.

 

Yang J., On seismic landslide hazard assessment, Géotechnique. 2007, 57(8): 707-713.

 

Yang J., Outstanding Young Researcher Award, The University of Hong Kong. 2007.

 

Yang J., Saturation Effects of Shallow Soils on Vertical Ground Motion, Lecture at Lanzhou University. 2008.

 

Yang J. and Yan X., Site response to vertical earthquake motion, ASCE Specialty Conference on Geotechnical Earthquake Engineering and Soil Dynamics III. 2008.

 

Yang Z., Li X.S. and Yang J., Quantifying and modelling fabric anisotropy of granular soils, Géotechnique. 2008, 58(4): 237-248.

 

Researcher : Yang S

Project Title:

The influence of feeding conditions on the formation and properties of aerobic granules in biological wastewater treatment

Investigator(s):

Yang S, Li XY

Department:

Civil Engineering

Source(s) of Funding:

Small Project Funding

Start Date:

10/2006

 

Abstract:

- Objectives:(1) To evaluate the formation of aerobic sludge granules under different feeding conditions;(2) To characterize the properties of the aerobic granules developed under different conditions;(3) To investigate the effect of feeding substrates on the granulation process and the properties of the granules.- Key issues and problems:Aerobic sludge granulation is a new technology in the field of biological wastewater treatment (Beun et al., 1999; Tay et al., 2001; Tay et al., 2002; Yang et al., 2005). Compared to the biomass flocs used in the conventional activated sludge process, aerobic granular sludge features a number of advantages such as a denser and stronger microbial structure, better settling ability, higher biomass retention, and a much improved capability to withstand high organic loading (Beun, 1999; Peng et al., 1999; Tay et al., 2001; Moy et al., 2002). An aerobic granular sludge system also is much easier to startup comparing to an anaerobic granular sludge system. From an engineering and economic point of view, aerobic granular sludge is a promising process that would lead the next generation of biological wastewater treatment technologies.The size of aerobic granules varies from 0.2 to 9 mm (Peng et al., 1999; Tay et al., 2001; Pan, 2003), depending on the feeding and operational conditions. Large granules frequently encounter a disintegration and breakage problem, due to the decay of microorganisms inside the granules (Arrojo et al., 2004). Thus, denser and relatively smaller aerobic granules are more desirable. Our recent laboratory study suggests that the feeding condition could affect the size and other properties of the sludge granules. From microscopic observation, large but loose aerobic granules were formed when glucose was fed as the sole carbon source without pH control in the reactor. However, when NaHCO3 was used to adjust the influent pH to 8.0-8.5, smaller and densely-compacted granules were developed. This phenomenon may suggest an effective method to manipulate the size and properties of sludge granules in bioreactors, which however has not been previously reported in the literature. The regulation of feeding substrates on the sludge granulation process can be an interesting and important research topic. The present project is proposed to investigate the influence of feeding conditions on the formation of aerobic granules and their properties.References:Arrojo P., Mosquera-Corral A., Garrido J.M. and Mendez R.R. (2004) Aerobic granulation with industrial wastewater in sequencing batch reactors. Water Res. 38: 3389-3399.Beun J. J., Hendriks A., van Loosdrecht M. C. M,. Morgenroth E., Wilderer P.A., and Heijnen J. J. (1999). Aerobic granulation in a sequencing batch reactor. Water Res. 33: 2283-2290.Moy B.Y.P., Tay J.H., Toh S. K., Liu Y., and Tay S. T. L. (2002). High organic loading influences the physical characteristics of aerobic granules. Lett. Appl. Microbiol. 34: 407-412. Peng D., Bernet N., Delgenes J. P. and Moletta R. (1999). Aerobic granular sludge - a case study. Water Res. 33: 890-893.Pan S. (2003) Inoculation of microbial granular sludge under aerobic conditions. PhD thesis, Nanyang Technological University, Singapore.Tay J.H., Liu Q. S., and Liu Y. (2001). The effects of shear force on the formation, structure and metabolism of aerobic granules. Appl. Microbiol. Biotechnol. 57: 227-233.Tay J.H., Yang S.F. and Liu Y. (2002) Hydraulic selection pressure-induced nitrifying granulation in sequencing batch reactors. Appl. Microbiol. Biotechnol. 52: 332-337.Yang S.F., Tay J.H. and Liu Y. (2005) Effect of substrate nitrogen/chemical oxygen demand ratio on the formation of aerobic granules. J. Environ. Eng.-ASCE 131: 86-92.

 

List of Research Outputs

 

Yang S. and Li X.Y., Comparison of extracellular polymeric substances between aerobic granules and activated sludge, 3rd International Conference on Environmental Science and Technology, the American Academy of Sciences, Houston, Texas, USA. 2007.

 

Yang S., Li X.Y. and Yu H.Q., Formation and characterisation of fungal and bacterial granules under different feeding alkalinity and pH conditions, Process Biochemistry. 2008, 43: 8-14.

 

Researcher : Yang Z

List of Research Outputs

 

Yang Z., Li X.S. and Yang J., Quantifying and modelling fabric anisotropy of granular soils, Géotechnique. 2008, 58(4): 237-248.

 

Researcher : Yeung AT

Project Title:

Field study of ground vibration induced by percussion piling

Investigator(s):

Yeung AT

Department:

Civil Engineering

Source(s) of Funding:

Seed Funding for New Staff

Start Date:

03/2004

 

Abstract:

To quantify the degree of ground vibration induced by percussion piling as a function of hammer characteristics, distance between pile and sensitive receiver, penetration depth of pile and subsurface conditions by full-scale field measurements.

 

Project Title:

Application of Grid-based Tactile Pressure Sensors in Geotechnical Modeling of Soil Nails and Pile Groups

Investigator(s):

Yeung AT

Department:

Civil Engineering

Source(s) of Funding:

Competitive Earmarked Research Grants (CERG)

Start Date:

10/2005

 

Abstract:

The objectives of this research proposal are to: (1) Establish the viability of using the advanced pressure sensor technology in geotechnical modeling. (2) Study the engineering behavior of pile groups with and without stiffness inserts. (3) Develop more realistic and economical design methodologies for pile groups. (4) Develop a better understanding of the natural phenomena of soil arching and dilatancy.

 

Project Title:

Laboratory study on the feasibility of using the foundation system as a heat exchanger for the water-cooled air conditioning system

Investigator(s):

Yeung AT

Department:

Civil Engineering

Source(s) of Funding:

Small Project Funding

Start Date:

01/2006

 

Abstract:

Lower energy expenses can significantly lower the business costs of Hong Kong, rendering Hong Kong more competitive economically in the world market. Moreover, reduction of electric power consumption can contribute significantly to the sustainable development of Hong Kong. The electric power consumed by air conditioning systems in Hong Kong accounts for about one-third of the total electric power consumption. With an increasing population and continuing development, the use of air conditioning is growing in the years to come. It is recognized that prudent means for improving the energy efficiency of air conditioning systems may lead to substantial reduction of electric energy consumption, thereby resulting in overall economic as well as environmental benefits to the society. Studies conducted by the Electrical and Mechanical Services Department of the Government confirm that one of such means is wider implementation of the water-cooled air conditioning system (WACS) which uses cooling water to remove heat from the condenser unit because: (1) WACS is more energy efficiency than the air-cooled system; and (2) reduction of electricity consumption leads to lower emission of combustion products from the electricity generation process. For the time being, the ultimate receiving body for the effluent of WACS in Hong Kong is the sea. Therefore, commercial, industrial or institutional buildings using large WACSs need a continuous supply of cooling water and a convenient heat sink for heat transfer. For wider implementation of the WACS, these two problems must be solved. Many tall buildings in Hong Kong are supported by large-diameter bored piles of typical lengths of 40 m to 100 m. During the construction of bored piles, at least four tubes are built for each pile along the full length of the pile for performance of sonic tests to evaluate the integrity of the constructed pile. It may be possible to circulate cooling water of the WACS through these tubes so that heat can be transfer to the Earth at no extra construction costs. This research program is proposed to establish the viability of using the Earth as the heat sink for the WACS in lieu of the sea by laboratory measurements and computer simulations.

 

List of Research Outputs

 

Au A.S.K. and Yeung A.T., Discussion of 'Forms and sand transport in shallow hydraulic fractures in residual soil', Canadian Geotechnical Journal. 2007, 44(12): 1474-1475.

 

Au A.S.K., Yeung A.T., Soga K. and Cheng Y.M., Effects of subsurface cavity expansion in clays, Géotechnique. 2007, 57(10): 821-830.

 

Liu Y., So T.C. and Yeung A.T., Use of tactile pressure sensor for plate load test, In: An-Bin Huang and Paul W. Mayne, Geotechnical and Geophysical Site Characterization, Proc., 3rd International Conference on Site Characterization ISC'3. London, Taylor & Francis, 2008, 1335-1338.

 

Yeung A.T., Mak S.W., Fung I.W.H. and Au A.S.K., A new laboratory apparatus to evaluate hydrodynamic dispersibility of soil during ocean dumping, Geotechnical Testing Journal. ASTM, 2008, 31(3): 199-205.

 

Yeung A.T., Collaboration between Hong Kong and Korea on the development of a soil nailing technique, Proc., Seminar on The State-of-the-art Technology and Experience on Geotechnical Engineering in Korea and Hong Kong. Hong Kong, Geotechnical Division, the Hong Kong Institution of Engineer, 2008, 111-120.

 

Yeung A.T., Construction & demolition materials management in Hong Kong, Proceedings of the Institution of Civil Engineers, Municipal Engineer. 2008, 161(ME1): 43-49.

 

Yeung A.T., Electrokinetics for soil remediation, In: Albert T. Yeung and Irene M.C. Lo, Environmental Geotechnology and Global Sustainable Development 2008. Hong Kong, Advanced Technovation Limited, 2008, 16-25.

 

Yeung A.T. and Lo I.M.C., Environmental Geotechnology and Global Sustainable Development 2008. Hong Kong, Advanced Technovation Limited, 2008.

 

Yeung A.T., Geomechanics and Geoengineering: An International Journal. Taylor and Francis, 2008.

 

Yeung A.T. and Akhtar A.S., Simulation of electrical conduction in geomaterials by SPICE, Pure and Applied Geophysics. 2008, 165(5): 923-945.

 

Yeung A.T. and Chong C., Tensile characteristics of cured-in-place pipe (CIPP) material, Proc., Trenchless Technologies in Asia Pacific (Macau) 2007 - Challenges in Rapidly Growing Cities, Macau. 2007.

 

Yeung A.T., Liu Y. and So T.C., Use of grid-based tactile pressure sensor in geotechnical engineering, Applications of Innovative Technologies in Geotechnical Works, Proc., 28th Annual Seminar of Geotechnical Division, the Hong Kong Institution of Engineers. Hong Kong, HKIE, 2008, 281-286.

 

Researcher : Young B

Project Title:

Design of cold-formed steel built-up closed sections with intermediate stiffeners

Investigator(s):

Young B

Department:

Civil Engineering

Source(s) of Funding:

Competitive Earmarked Research Grants (CERG)

Start Date:

01/2005

 

Abstract:

To conduct a series of column tests on cold-formed steel built-up closed sections with intermediate stiffeners compressed between fixed ends and pin ends; to develop a nonlinear finite element model (FEM) based on the test results; to perform an extensive parametric study of cross-section geometry using the developed FEM. Hence, more results can be obtained from the parametric study; to compare the test and numberical results with the direct strength method; to enhance the understanding of the behaviour of cold-formed steel built up closed sections with intermediate stiffeners; to produce column design rules for cold-formed steel built-up sections with intermediate stiffeners based on the experimental and numerical results. Reliability analysis will also be used; to publish the results locally in Hong Kong and internationally.

 

Project Title:

Behaviour of Cold-formed High Strength Steel Beams

Investigator(s):

Young B

Department:

Civil Engineering

Source(s) of Funding:

Seed Funding Programme for Basic Research

Start Date:

06/2005

 

Abstract:

Cold-formed steel structural members may lead to more economic design than hot-rolled steel members as a result of their superior strength to weight ratio and ease of construction. Cold-formed steel beams are used increasingly in light gauge construction. The use of high strength material could improve the load carrying capacity of the structural members. Therefore, cold-formed steel beams fabricated from high strength material would lead to cost saving. The existing "Hong Kong Code of Practice for the Structural Use of Steel (Limit State Approach)" is limited to steel grade of 450 MPa. The Hong Kong Steel Code does not cover high strength material of yield stress greater than 450 MPa. Furthermore, high strength material is not as ductile as normal strength material. Hence, there is a need to investigate high strength steel material. Web crippling is a form of localized buckling that occurs at points of concentrated loads or supports of structural beams. Cold-formed steel beams that are unstiffened against this type of loading could cause structural failure by web crippling. Transverse stiffeners can be used to prevent the structural failure. However, transverse stiffeners are often difficult and uneconomical to install on structural steel beams. The purpose of this research is to investigate the behaviour of cold-formed high strength steel beams. A series of tests will be carried out on cold-formed high strength steel beams subjected to web crippling. A non-linear finite element model will be developed based on the test results. The experimental and theoretical investigation would provide a better understanding of the behaviour of cold-formed high strength steel beams subjected to web crippling. Hence, design rules for cold-formed high strength steel beams will be proposed. These design rules can be used locally in Hong Kong as well as internationally. In summary, the key issues and problems are as follows: o Cold-formed steel structural members may lead to more economic design than the conventional hot-rolled steel members. o The use of high strength material could improve the load carrying capacity of the structural members. o The existing Hong Kong Steel Code does not cover high strength material (Yield stress greater than 450 MPa). o Cold-formed steel beams that are unstiffened against concentrated loads could cause structural failure by web crippling. o Transverse stiffeners are often difficult and uneconomical to install on structural steel beams. The objectives of the project are as follows: o Conduct a series of tests on cold-formed high strength steel beams subjected to web crippling. o Develop a non-linear finite element model based on the test results. o Perform an extensive parametric study of cross-section geometry using the developed finite element model. o Enhance the understanding of the behaviour of cold-formed high strength steel beams. o Compare the experimental results with the design strengths obtained using the Hong Kong, American and Australian/New Zealand design specifications. o Investigate the appropriateness of the current web crippling design rules for high strength steel material. o Propose web crippling equation for cold-formed high strength steel beams.

 

Project Title:

Structural Performance of Innovative Cold-formed Steel Sections

Investigator(s):

Young B

Department:

Civil Engineering

Source(s) of Funding:

Seed Funding Programme for Basic Research

Start Date:

06/2006

 

Abstract:

The use of cold-formed steel structural members has increased rapidly in recent years, especially in cold-formed steel construction, such as steel-framed housing, office buildings, factories and warehouses. Cold-formed steel can be used efficiently in many applications where conventional hot-rolled steel members prove to be uneconomic. However, traditional cold-formed steel sections, such as channel, Zee and angle sections have been well investigated. Therefore, a new type of innovative cold-formed steel sections are needed, where the new sections will be structurally more efficient and econmical than the traditional cold-formed steel sections.The purpose of this research is to develop a new type of innovative cold-formed steel sections through both experimental and theoretical investigations. New design rules for the innovative cold-formed steel sections will be proposed. The new innovative cold-formed steel sections can be used in Hong Kong as well as elsewhere.The objectives of the project are as follows:o Develop a new type of innovative cold-formed steel sections.o Use numerical analysis to design the innovative cold-formed steel sections.o Perform experiments on the innovative sections to assess the structural performance of the sections.o Develop a nonlinear finite element model (FEM) based on the test results.o Perform an extensive parametric study using the developed FEM. Hence, more results can be obtained from the parametric study.o Propose design rules for the innovative cold-formed steel sections based on the experimental and numerical results.

 

Project Title:

Investigation of Cold-formed Steel Structures under Fire Conditions

Investigator(s):

Young B

Department:

Civil Engineering

Source(s) of Funding:

Seed Funding Programme for Basic Research

Start Date:

07/2007

 

Abstract:

Cold-formed steel tubular sections are commonly used as primary structural members. Cold-formed steel tubular columns may fail by local buckling, flexural buckling and interaction of local and flexural buckling. The current international codes of practice for design of cold-formed steel structures, such as the American, Australian/New Zealand, British and European, provide column design rules. However, these design rules mainly focus on columns at normal room temperature. Generally, these codes of practice do not provide design provision for cold-formed steel columns under fire conditions. It should be noted that the mechanical properties of steel structures at elevated temperatures are available in the design specifications of hot-rolled steel structures rather than cold-formed steel structures. Previous research on the behaviour of steel structures at elevated temperatures was mainly focused on hot-rolled steel. Therefore, limited test data are available for cold-formed steel structures at elevated temperatures. It is important to investigate the behaviour of cold-formed steel tubular columns under fire conditions.The purpose of this research is to develop design rules for cold-formed steel tubular columns under fire conditions that cover the temperature ranging from 20 to 1000 ºC through both numerical and theoretical investigations.The objectives of the project are as follows:- Develop a nonlinear finite element model based on the existing column test results under fire conditions.- Perform an extensive parametric study of cross-section geometry using the developed finite element model. - Modify the Rankine approach for cold-formed steel tubular columns under fire conditions.- Enhance the understanding of the behaviour of cold-formed steel tubular columns under fire conditions.- Propose design rules for cold-formed steel tubular columns under fire conditions using the modified effective width and direct strength methods..

 

List of Research Outputs

 

Chen J. and Young B., Cold-formed Steel Lipped Channel Columns at Elevated Temperatures, Engineering Structures. ELSEVIER, 2007, 29: 2445-2456.

 

Chen J. and Young B., Design of High Strength Steel Columns at Elevated Temperatures, Journal of Constructional Steel Research. ELSEVIER, 2008, 64: 689-703.

 

Cheung Y.K., Au F.T.K. and Young B., Numerical and Experimental Investigation of Thin-Walled Structures, (Keynote Paper), In: M Mahendran, Proceedings of Fifth International Conference on Thin-Walled Structures, Brisbane, Australia, 18-20 June 2008. Brisbane, Australia, Queensland University of Technology, 1: 29-40.

 

Ellobody E. and Young B., Investigation of Cold-formed Stainless Steel Non-slender Circular Hollow Section Columns, Steel and Composite Structures. 2007, 7: 321-337.

 

Feng R. and Young B., Tests of Cold-formed Stainless Steel Tubular T-joints, Proceedings of the 9th International Conference on Steel, Space and Composite Structures. 2007, 277-284.

 

Feng R. and Young B., Tests of Concrete-filled Stainless Steel Tubular T-joints, Proceedings of the 3rd International Experts Seminar on Stainless Steel in Structures. 2007.

 

Feng R. and Young B., Tests of T-joints in RHS and SHS High Strength Stainless Steel Tubes, Proceedings of the 5th International Conference on Advances in Steel Structures. 2007, 571-578.

 

Lim J.B.P. and Young B., Effects of Elevated Temperatures on Bolted Moment-connections between Cold-formed Steel Members, Engineering Structures. ELSEVIER, 2007, 29: 2419-2427.

 

Lim J.B.P., Young B. and Feng R., Ultimate Bearing Shear Strength of Cold-formed Steel Members using Bolted Connections at Elevated Temperatures, Proceedings of the 5th International Conference on Advances in Steel Structures. 2007, 718-725.

 

Silvestre N., Camotim D. and Young B., Numerical Analysis of the Non-linear Behaviour of CFRP-Strengthened Cold-Formed Steel Columns, Proceedings of the 3rd International Conference on Steel and Composite Structures. 2007, 969-975.

 

Silvestre N., Camotim D. and Young B., On the Use of the EC3 and AISI Specifications to Estimate the Ultimate Load of CFRP-Strengthened Cold-formed Steel Lipped Channel Columns, Proceedings of the 1st Asia-Pacific Conference on FRP in Structures. 2007, 1005-1010.

 

To C.Y. and Young B., Fire Resistance of Fixed-Ended Stainless Steel Tubular Columns, Proceedings of the 11th International Conference on Civil, Structural and Environmental Engineering Computing. 2007, 146, 1-14.

 

Young B. and Zhou F., Aluminum Tubular Sections Subjected to Web Crippling ― Part II: Proposed Design Equations , Thin-Walled Structures. ELSEVIER, 2008, 46: 352-361.

 

Young B. and Chen J., Cold-formed Steel Built-up Closed Sections with Intermediate Stiffeners, (Keynote Paper), Proceedings of the 9th International Conference on Steel, Space and Composite Structures. 2007, 43-53.

 

Young B., Cold-formed steel built-up closed sections with intermediate stiffeners, The 9th International Conference on Steel, Space and Composite Structures (Keynote speech). 2007.

 

Young B. and Chen J., Design of Cold-formed Steel Built-up Closed Sections with Intermediate Stiffeners, Journal of Structural Engineering. ASCE, 2008, 134: 727-737.

 

Young B. and Ellobody E., Design of Cold-formed Steel Unequal Angle Compression Members, Proceedings of the 5th International Conference on Thin-walled Structures. 2008, 263-272.

 

Young B., Editorial Board, Journal of Advanced Steel Construction. 2008.

 

Young B., Editorial Board, Journal of Advances in Civil Engineering. 2008.

 

Young B., Editorial Board, Journal of Constructional Steel Research, ELSEVIER. 2008.

 

Young B., Editorial Board, Progress in Steel Building Structures (In Chinese). 2008.

 

Young B., Editorial Board, The Open Civil Engineering Journal. 2008.

 

Young B., Editorial Board, The Open Construction & Building Technology Journal. 2008.

 

Young B., Experimental and Numerical Investigation of High Strength Stainless Steel Structures, Proceedings of the 3rd International Experts Seminar on Stainless Steel in Structures. 2007.

 

Zhou F. and Young B., Aluminum Tubular Sections Subjected to Web Crippling ― Part I: Tests and Finite Element Analysis , Thin-Walled Structures. ELSEVIER, 2008, 46: 339-351.

 

Zhou F. and Young B., Experimental Investigation of Cold-formed High-strength Stainless Steel Tubular Members Subjected to Combined Bending and Web Crippling, In: Sashi Kunnath, Journal of Structural Engineering. Reston, America, ASCE, 2007, 133: 1027-1034.

 

Zhou F. and Young B., Experimental and Numerical Investigations of Cold-formed Stainless Steel Tubular Sections Subjected to Concentrated Bearing Load, In: John E. Harding, Reidar Bjorhovde, Gerard A. Parke, Journal of Constructional Steel Research. ELSEVIER, 2007, 63: 1452-1466.

 

Zhou F. and Young B., Finite Element Analysis of Cold-formed Stainless Steel Tubular Sections Subjected to Concentrated Bearing Load, In: M. Mahendran, Proceedings of the 5th International Conference on Thin-walled Structures. 2 George Street, Brisbane, Australia, Queensland University of Technology, 2008, 2: 877-884.

 

Zhou F. and Young B., Tests of Concrete-filled Aluminum Stub Columns, Thin-Walled Structures. ELSEVIER, 2008, 46: 573-583.

 

Zhou F. and Young B., Web Crippling of Cold-formed Stainless Steel Tubular Sections, In: Kim Rasmussen, Proceedings of the 5th International Conference on Coupled Instabilities in Metal Structures. Syney, Australia, University Publishing service, The University of Sydney, 2008, 1: 217-224.

 

Zhu J. and Young B., Behavior and Design of Aluminum Alloy Structural Members, Journal of Advanced Steel Construction. 2008, 4: 158-172.

 

Zhu J. and Young B., Behaviour and Design of Aluminum Alloy Structural Members, Proceedings of the 5th International Conference on Coupled Instabilities in Metal Structures. 2008, 473-480.

 

Zhu J. and Young B., Design of Aluminum Alloy Tubular Columns using Direct Strength Method, Proceedings of the 6th International Conference on Steel and Aluminium Structures. 2007, 1020-1029.

 

Zhu J. and Young B., Finite Element Modeling of Aluminum Alloy Tubular Columns, Proceedings of the 6th International Conference on Steel and Aluminium Structures. 2007, 1012-1019.

 

Researcher : Yu D

List of Research Outputs

 

Lai A.C.H., Yu D. and Lee J.H.W., Near and Intermediate Field Mixing of a Rosette Jet Group, The fifth International Symposium on Environmental Hydraulics. 2007.

 

Lee J.H.W., Yu D., Wong C.K.C. and Choi D.K.W., Drainage Improvement in Northern Hong Kong Island Hong Kong West Tunnel and Lower Catchment Improvement – Investigation: Additional Model Testing of Intake Model – Part A. Lateral Inflow Structure, Part B. M3 Intake, 2008.

 

Yu D. and Lee J.H.W., Design of Tangential Vortex Intakes for Stormwater Diversion, 32nd International Association of Hydraulics Research Congress (CDROM), Venice, Italy, July 1-6. 2007.

 

Yu D., Lee J.H.W. and Wong C.K.C., Hydraulic Model Study of Stepped Drainage Channel with Sharp Bend and Trash Grills, The fifth International Symposium on Environmental Hydraulics. 2007.

 

Yu D., Lee J.H.W. and Wong C.K.C., Measurement of Supercritical Air-Water Bottom Rack Flow, Hydraulic Measurements and Experimental Methods. 2007.

 

Yu D., Tangential Vortex Intake Design for Stormwater Diversion, 18th Urban Flood Disaster Management Technology Seminar organized by Urban Flood Disaster Management Research Center. Seoul, Korea, 2007.

 

Researcher : Yu F

List of Research Outputs

 

Yang J., Tham L.G., Lee P.K.K. and Yu F., Observed performance of long steel H-piles jacked into sandy soils: Closure, Journal of Geotechnical and Geoenvironmental Engineering, ASCE. 2007, 133(7): 898-901.

 

Researcher : Yue QZQ

Project Title:

Boundary element analysis of fracture mechanics in functionally graded materials

Investigator(s):

Yue QZQ, Tham LG

Department:

Civil Engineering

Source(s) of Funding:

Small Project Funding

Start Date:

11/2003

 

Abstract:

To systematically apply a generalized Kelvin solution based boundary element method (GKS-BEM) for fracture mechanics in multilayered elastic solids and functionally graded materials; to publish new results and findings in SCI journals for international reputation.

 

Project Title:

Drilling process monitoring for a wealth of extra information from drillhole exploration in weathered soils

Investigator(s):

Yue QZQ, Lee CF, Tham LG

Department:

Civil Engineering

Source(s) of Funding:

Competitive Earmarked Research Grants (CERG)

Start Date:

12/2003

 

Abstract:

To develop a new drilling process monitor (DPM) to record drilling process parameters of hydraulic rotary drilling machines in real-time; to carry out the field logging and testing using new DPM method and the conventional methods in drillholes for subsurface exploration in weathered soils; to determine the ground weathering profiles from the DPM parameters: to validate and correlate the DPM results with the those obtained from conventional logging and in-situ testing; and to establish recommended procedures and methods for using the DPM method and for presenting the results.

 

List of Research Outputs

 

Chen J., Gao W. and Yue Q.Z.Q., Case study of drilling process monitoring from two adjacent holes with two drills, Proceedings of 42nd U.S. Rock Mechanics Symposium and 2nd U.S.-Canada Rock Mechanics Symposium, June 29 – July 2, 2008, San Francisco, CA, USA. . ASCE, 2008, ARMA 08-219.

 

Chen J., Gao W. and Yue Q.Z.Q., Detection of thin weak zone in weatherrd rocks from automatic monitoring of pneumatic rotary-percussive drilling, In: Meifeng Cai and Jin’an Wang, Boundaries of Rock Mechanics (Proceedings of the International Yong Scholars’ Symposium on Rock Mechanics), April 28 – May 2, 2008, Beijing, China. London, Taylor & Francis Group, 2008, 53-58.

 

Gao G.Y., Shi G., Xiong H. and Yue Q.Z.Q., 3D analysis of active vibration isolation using WIB in multilayered ground under vertical excitation, In: Yang YB, Yau JD, Proceedings Of The 3rd International Symposium On Environment Vibrations: Prediction, Monitoring, Mitigation And Evaluation, Isev 2007 . NATIONAL TAIWAN UNIVERSITY, 2007, 37-46.

 

Gao G.Y., Shi G., Gao M. and Yue Q.Z.Q., Analysis of multi-rows of piles as barriers for passive isolating vibrations in far field, In: ): Yang YB, Yau JD, Proceedings Of The 3rd International Symposium On Environment Vibrations: Prediction, Monitoring, Mitigation And Evaluation, Isev 2007. Taiwan, 294-299.

 

Gao G.Y., Shi G. and Yue Q.Z.Q., Field measurement and numerical prediction of the ground vibration induced by high-speed train, In: Yang YB, Yau JD, Proceedings Of the 3rd International Symposium On Environment Vibrations: Prediction, Monitoring, Mitigation And Evaluation, Isev 2007. : 480-485.

 

Gao W., Chen J. and Yue Q.Z.Q., Characterization of cavities in marble from automatic monitoring of hydraulic rotary drilling in ground investigation, Proceedings of 42nd U.S. Rock Mechanics Symposium and 2nd U.S.-Canada Rock Mechanics Symposium, June 29 – July 2, 2008, San Francisco, CA, USA. . USA, ARMA, 2008, ARMA 08-218.

 

Gao W., Chen J. and Yue Q.Z.Q., Identification of geological interfaces from drilling process monitoring in ground investigation, Boundaries of Rock Mechanics (Proceedings of the International Yong Scholars’ Symposium on Rock Mechanics), Editors: Meifeng Cai and Jin’an Wang, April 28 – May 2, 2008, Beijing, China. London, Taylor & Francis, 2008, 7-12.

 

Li J., Tham L.G., Junaideen S.M., Yue Q.Z.Q. and Lee C.F., Loose fill slope stabilization with soil nails: Full-scale test, Journal Of Geotechnical And Geoenvironmental Engineering. USA, ASCE, 2008, 134(3): 277-288.

 

Lu W.J., Lau T.Y. and Yue Q.Z.Q., Laboratory comparative tests for geomaterial strengths with drilling process monitoring technique, In: MF Cai and JA Wang, Boundaries of Rock Mechanics (Proceedings of the International Yong Scholars’ Symposium on Rock Mechanics), Editors: Meifeng Cai and Jin’an Wang, April 28 – May 2, 2008, Beijing, China. London, Taylor & Francis Group, 2008, 127-132.

 

Yang W.W. and Yue Q.Z.Q., Current status and common issues in standard penetration tests for soil classification around the world, Geotechnical Investigation and Surveying. 2008, 2008(1): 2008(1): 5-15 & 52.

 

Yue Q.Z.Q., Chen J. and Gao W., An innovative approach combining geological mapping and drilling process monitoring for quantitative assessment of natural terrain hazards, Proc. Of the 10th International Symposium on Landslides and Engineered Slopes, June 30 uly 4, 2008, Xi’an, China. Taylor & Francis Group, 2008, 535-541.

 

Yue Q.Z.Q., Li L.H., Yang Z.F., Lu M., Xu J.H. and Zheng J., An investigation on long-term stability and integrity of surrounding rocks in Longyou caverns caved 2000 years ago, In: L. Ribeiro e Sousa, C. Olalla, N. Grossmann, Proceedings of the 11th Congress of the international Society for Rock Mechanics (ISRM 2007), Lisbon, Portugal, July 9-13, 2007. London, Taylor & Francis, 1: 19-22.

 

Yue Q.Z.Q., An issue in conventional approach for drainage design on slopes in mountainous regions, Proc. Of the 10th International Symposium on Landslides and Engineered Slopes, June 30 uly 4, 2008, Xi’an, China. Taylor & Francis Group, 2008, 1697-1702.

 

Yue Q.Z.Q., Best Peer Reviewer for 2006-2007 , The Chinese Journal of Rock Mechancis and Engineering . 2008.

 

Yue Q.Z.Q., Chinese Journal of Geotechnical Engineering. China Association for Science and Technology, 2007.

 

Yue Q.Z.Q., Chinese Journal of Rock Mechanics and Engineering. Science Press, China, 2007.

 

Yue Q.Z.Q., Hong Kong landslip prevention and its social benefits, Proceedings of Abstract of 2007 International Workshop on Natural Disasters & Emergency Management, Sept. 22-24, 2007, Beijing, China. Shanghai, 2007, 1.

 

Yue Q.Z.Q., Journal of Engineering Geology. Science Press, China, 2007.

 

Yue Q.Z.Q., Member of Editorial Board, Journal of Geotechnical Investigation & Surveying. China National Publishing Industry Corporation, 2007.

 

Yue Q.Z.Q., Member of Editorial Board, South China Journal of Seismology. GaungZhou, Earthquake Administration of Guangdong Province, 2007.

 

Yue Q.Z.Q., Young Researcher Grant Award of the National Natural Science Foundation of China , National Natural Science Foundation of China. 2008.

 

Researcher : Zhang R

List of Research Outputs

 

Chen J., Zhang R. and Chan S.N., Drought and water resources security of the East River (Dongjiang) basin, the 7th Shenzhen, Hong Kong, Zhuhai and Macao seminar on Water Supply. 2007, 45-53.

 

Researcher : Zhang T

Project Title:

Microbial diversity and characteristics of activated sludge treating Hong Kong's saline sewage

Investigator(s):

Zhang T, Fang HHP

Department:

Civil Engineering

Source(s) of Funding:

Seed Funding Programme for Basic Research

Start Date:

04/2006

 

Abstract:

To investigate the microbial community in the activated sludge treating Hong Kong's saline sewage. Hong Kong is leading the world in treating saline sewage, which results from the fresh water conservation by large scale seawater toilet flushing. Several secondary municipal sewage treatment plants in Hong Kong successfully treat a total of about 200,000 m3 saline sewage (containing 6000 mg-Cl-/l as the average) daily to produce effluents in compliance with the discharge standards. It is thus of great scientific and engineering importance to understand the diversity and characteristics of the halophilic (salt tolerant) microorganisms in such activated sludge, and yet very little related information is available. Results of this study shall provide valuable information that will be needed to further improve the effluent quality of Hong Kong's sewage treatment facilities. Such information will also benefit other cities that are planning to follow Hong Kong's practice of using seawater for municipal purpose. To isolate and characterize the dominant halophilic bacterial species in activated sludge treating Hong Kong's saline sewage. The dominant halophilic microorganisms treating saline sewage differ from those treating fresh water sewage. To isolate and characterize these halophilic bacteria will not only produce scientific information which may lead to improving the performance of Hong Kong's treatment facilities, but also provide useful knowledge for other cities worldwide which are planning to follow Hong Kong's practice. To design DNA probes/primers specific for the identified halophilic bacteria. DNA probes and primers used in hybridization and PCR (polymerase chain reaction) have been increasingly applied to wastewater treatment and study. New DNA probes/primers are needed for the halophilic bacteria treating saline sewage, since probes/primers presently available for bacteria treating freshwater sewage are unlikely applicable. The DNA probes developed in this project will be valuable tools for the study and control of saline sewage treatment.

 

Project Title:

Microbial diversity and characteristics of activated sludge treating Hong Kong's saline sewage

Investigator(s):

Zhang T, Fang HHP

Department:

Civil Engineering

Source(s) of Funding:

Competitive Earmarked Research Grants (CERG)

Start Date:

09/2006

 

Abstract:

(1) To investigate the microbial community in the activated sludge treating Hong Kong’s saline sewage. Hong Kong is leading the world in treating saline sewage, which results from the fresh water conservation by large scale seawater toilet flushing. Several secondary municipal sewage treatment plants in Hong Kong successfully treat a total of about 200,000 m3 saline sewage (containing 6000 mg-Cl-/l as the average) daily to produce effluents in compliance with the discharge standards. It is thus of great scientific and engineering importance to understand the diversity and characteristics of the halophilic (salt tolerant) microorganisms in such activated sludge, and yet very little related information is available. Results of this study shall provide valuable information that will be needed to further improve the effluent quality of Hong Kong’s sewage treatment facilities. Such information will also benefit other cities that are planning to follow Hong Kong’s practice of using seawater for municipal purpose. (2) To isolate and characterize the dominant halophilic bacterial species in activated sludge treating Hong Kong’s saline sewage. The dominant halophilic microorganisms treating saline sewage differ from those treating fresh water sewage. To isolate and characterize these halophilic bacteria will not only produce scientific information which may lead to improving the performance of Hong Kong’s treatment facilities, but also provide useful knowledge for other cities worldwide which are planning to follow Hong Kong’s practice. (3) To design DNA probes/primers specific for the identified halophilic bacteria. DNA probes and primers used in hybridization and PCR (polymerase chain reaction) have been increasingly applied to wastewater treatment and study. New DNA probes/primers are needed for the halophilic bacteria treating saline sewage, since probes/primers presently available for bacteria treating freshwater sewage are unlikely applicable. The DNA probes developed in this project will be valuable tools for the study and control of saline sewage treatment. (4) To evaluate the effect of increased sewage salinity on the removal of BOD and nitrogen, as well as on the microbial community of the activated sludge. According to the data of Sha Tin Sewage Treatment Works in last two years, the chloride concentration in saline sewage could increase to above 8000 mg-Cl-/l for a short time, resulting in instability of treatment efficiency. To study the sewage treatment performance and the corresponding microbial community shift due to salinity increase will not only be benefit to the engineering practice in the future, but also provide useful scientific knowledge about halophilic activated sludge.

 

Project Title:

Evaluation of Sewage Methane Production Using Anaerobic Membrane Bioreactor and Characterizatoin of the Related Fouling

Investigator(s):

Zhang T, Fang HHP, Li XY

Department:

Civil Engineering

Source(s) of Funding:

Seed Funding Programme for Basic Research

Start Date:

05/2007

 

Abstract:

The anaerobic process has been extensively used to recover energy (in the form of methane) and remove pollutions from high strength industrial wastewater simultaneously. The application of the anaerobic process in sewage treatment is not as successful as in high strength industrial wastewater applications due to low biomass concentration, and the resulting low removal rate and large volume of reactors needed. Membrane technology may be applied to increase biomass concentration in the reactors, and thus raise removal rate and reduce land demand for reactors construction. Saving land is extremely important for metropolises like Hong Kong. Membrane technology has been extensively used in water and wastewater treatment for the past three decades (Fang and Chian, 1975; Li and Chu, 2003). However, the microbial growth on the membrane surface, known as biofouling, remains a major operating problem for the application of membrane bioreactor (MBR). Control of biofouling is costly. A project is proposed in order to achieve the following specific objectives: 1) to evaluate methane production; 2) to characterize membrane fouling and its effect on reactor performance.

 

List of Research Outputs

 

Fang H.H.P., Zhang M., Zhang T. and Chen J., Predictions of nitrate diffusion in sediment using horizontal attenuated total reflection (HATR) by Fourier transform infrared (FTIR) spectrometry, Water Research. 2008, 42: 903-908.

 

Li C., Zhang T. and Fang H.H.P., Use of TaqMan gene probe for real-time monitoring of acidophilic hydrogen-producing bacteria, Biotechnology Letters. 2007, 29: 1753-1757.

 

Li R., Zhang T. and Fang H.H.P., Characteristics of a phototrophic sludge producing hydrogen from acetate and butyrate., International Journal of Hydrogen Energy.. 2008, 33.

 

Mei L., Fang H.H.P., Zhang T., Jin L.J. and Yip H.K., The use of chlorhexidine in reducing the cariogenicity of oral microbial biofilm with caries free and high risk of caries. , the Inaugural Conjoint Dental Scientific Meeting The University of Hong Kong and Wuhan University.. China, 2008, 38.

 

Zhang T., Qin X. and Fang H.H.P., Use of P-17 and NOX specific primer sets for assimilable organic carbon (AOC) measurements, Water Supply. 2007, 7: 157-163.

 

Zhu H.G., Fang H.H.P., Zhang T. and Beaudatte L.A., Effect of ferrous ion on photo heterotrophic hydrogen production by Rhodobacter sphaeroides, International Journal of Hydrogen Energy. 2007, 32: 4112-4118.

 

Researcher : Zhang Y

List of Research Outputs

 

Zhang Y., Ng T.S.T. and Kumaraswamy M.M., Applying ant colony system techniques to solve time-cost trade-off problems, In: W. Hughes, Proceedings: Construction Management and Economics 25th Anniversary Conference, July 16-18, University of Reading, Reading, UK. United Kingdom, 2007, 7 pages.

 

Researcher : Zhou F

List of Research Outputs

 

Young B. and Zhou F., Aluminum Tubular Sections Subjected to Web Crippling ― Part II: Proposed Design Equations , Thin-Walled Structures. ELSEVIER, 2008, 46: 352-361.

 

Zhou F. and Young B., Aluminum Tubular Sections Subjected to Web Crippling ― Part I: Tests and Finite Element Analysis , Thin-Walled Structures. ELSEVIER, 2008, 46: 339-351.

 

Zhou F. and Young B., Experimental Investigation of Cold-formed High-strength Stainless Steel Tubular Members Subjected to Combined Bending and Web Crippling, In: Sashi Kunnath, Journal of Structural Engineering. Reston, America, ASCE, 2007, 133: 1027-1034.

 

Zhou F. and Young B., Experimental and Numerical Investigations of Cold-formed Stainless Steel Tubular Sections Subjected to Concentrated Bearing Load, In: John E. Harding, Reidar Bjorhovde, Gerard A. Parke, Journal of Constructional Steel Research. ELSEVIER, 2007, 63: 1452-1466.

 

Zhou F. and Young B., Finite Element Analysis of Cold-formed Stainless Steel Tubular Sections Subjected to Concentrated Bearing Load, In: M. Mahendran, Proceedings of the 5th International Conference on Thin-walled Structures. 2 George Street, Brisbane, Australia, Queensland University of Technology, 2008, 2: 877-884.

 

Zhou F. and Young B., Tests of Concrete-filled Aluminum Stub Columns, Thin-Walled Structures. ELSEVIER, 2008, 46: 573-583.

 

Zhou F. and Young B., Web Crippling of Cold-formed Stainless Steel Tubular Sections, In: Kim Rasmussen, Proceedings of the 5th International Conference on Coupled Instabilities in Metal Structures. Syney, Australia, University Publishing service, The University of Sydney, 2008, 1: 217-224.

 

Researcher : Zhou Y

List of Research Outputs

 

Long Y., Zhang C. and Zhou Y., A COMPARATIVE STUDY FOR CONCRETE FRACTURE ANALYSIS USING SMEARED-AND DISCRETE-CRACK MODEL, 基于弥散与分离裂缝模型的混凝土开裂比较研究, ENGINEERING MECHANICS . 工程力学, Beijing, China, The Chinese Society of Theoretical and Applied Mechanics, 2008, 25: 80-84.

 

To C.Y., Tham L.G. and Zhou Y., An elasto-plastic model for saturated loosely compacted completely decomposed granite, Geomechanics and Geoengineering: An International Journal. Taylor & Francis, 2008, 3: 13-25.

 

Researcher : Zhu J

List of Research Outputs

 

Zhu J. and Young B., Behavior and Design of Aluminum Alloy Structural Members, Journal of Advanced Steel Construction. 2008, 4: 158-172.

 

Zhu J. and Young B., Behaviour and Design of Aluminum Alloy Structural Members, Proceedings of the 5th International Conference on Coupled Instabilities in Metal Structures. 2008, 473-480.

 

Zhu J. and Young B., Design of Aluminum Alloy Tubular Columns using Direct Strength Method, Proceedings of the 6th International Conference on Steel and Aluminium Structures. 2007, 1020-1029.

 

Zhu J. and Young B., Finite Element Modeling of Aluminum Alloy Tubular Columns, Proceedings of the 6th International Conference on Steel and Aluminium Structures. 2007, 1012-1019.

 

Researcher : Zhu Y

List of Research Outputs

 

Zhu Y., Su K.L. and Zhou F.L., Seismic behavior of strengthened reinforced concrete coupling beams by bolted steel plates, part 1: Experimental study, Structural Engineering and Mechanics. Korea, Techno Press, 2007, 27(2): 149-172.



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