1. Lecturer, School of Civil, Environmental and Mining Engineering, Univ. of Adelaide, Adelaide, SA 5005, Australia; formerly, Dept. of Civil and Environmental Engineering, Hong Kong Polytechnic Univ., Hong Kong, China.
2. Associate Professor, Dept. of Civil and Environmental Engineering, Hong Kong Polytechnic Univ., Hong Kong, China (corresponding author).
3. Professor, Dept. of Civil and Environmental Engineering, Hong Kong Polytechnic Univ., Hong Kong, China; formerly, Dept. of Civil Engineering, Univ. of Hong Kong, Pokfulam Rd., Hong Kong, China.