1. Ph.D. Candidate, Research Institute of Structural Engineering and Disaster Reduction, College of Civil Engineering, Tongji Univ., Shanghai 200092, P.R. China.
2. Professor, Research Institute of Structural Engineering and Disaster Reduction, College of Civil Engineering, Tongji Univ., Shanghai 200092, P.R. China.
3. Assistant Professor, Research Institute of Structural Engineering and Disaster Reduction, College of Civil Engineering, Tongji Univ., Shanghai 200092, P.R. China (corresponding author).