1. Ph.D. Candidate, Dept. of Bridge Engineering, Southwest Jiaotong Univ., 111 Section of Northbound 1, Second Ring Rd., Chengdu 610031, China.
2. Professor, Dept. of Bridge Engineering, Southwest Jiaotong Univ., 111 Section of Northbound 1, Second Ring Rd., Chengdu 610031, China (corresponding author).
3. Assistant Professor, Dept. of Civil, Environmental and Ocean Engineering, Stevens Institute of Technology, 1 Castle Point Terrace, Hoboken, NJ 07030.
4. Professor, Dept. of Bridge Engineering, Southwest Jiaotong Univ., 111 Section of Northbound 1, Second Ring Rd., Chengdu 610031, China.