1. Professor, Dept. of Bridge Engineering, Tongji Univ., 1239 Siping Rd., Shanghai 200092, China.
2. Ph.D. Candidate, Dept. of Bridge Engineering, Tongji Univ., 1239 Siping Rd., Shanghai 200092, China (corresponding author).
3. Assistant Engineer, Branch of Bridge Engineering, Architectural Design and Research Institute of Tongji Univ., 1239 Siping Rd., Shanghai 200092, China.