1. Professor, Dept. of Structural Engineering, Tongji Univ., Siping Rd., 1239, Shanghai 200092, China (corresponding author).
2. Ph.D. Candidate, Dept. of Structural Engineering, Tongji Univ., Shanghai 200092, China.
3. Design Engineer, Dept. of Structural Engineering, Tongji Univ., Shanghai 200092, China.