1. Professor, Dept. of Civil Engineering, Shanghai Jiao Tong Univ., and State Key Laboratory of Ocean Engineering, Shanghai 200240, China (corresponding author).
2. Ph.D. Student, Dept. of Civil Engineering, Shanghai Jiao Tong Univ., and State Key Laboratory of Ocean Engineering, Shanghai 200240, China.
3. Associate Professor, Dept. of Civil Engineering, Univ. of Hong Kong, Hong Kong 999077, China.
4. Associate, Arup, 77 Water St., New York, NY 10005.