1. Ph.D. Candidate, Dept. of Civil Engineering, Tongji Univ., Shanghai 200092, China; and Research Assistant, Dept. of Civil and Environmental Engineering, Hong Kong Polytechnic Univ., Hong Kong 999077, China.
2. Associate Professor, Dept. of Civil and Environmental Engineering, Hong Kong Polytechnic Univ., Hong Kong 999077, China (corresponding author).
3. Professor, Dept. of Civil Engineering, Tongji Univ., Shanghai 200092, China.
4. Professor, Dept. of Civil and Environmental Engineering, Hong Kong Univ. of Science and Technology, Hong Kong 999077, China.