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. Ph.D. Candidate, Dept. of Civil, Architectural and Environmental Engineering, Missouri Univ. of Science and Technology, 1401 North Pine St., Rolla, MO 65401.
4. Professor, Dept. of Bridge Engineering, Southwest Jiaotong Univ., 111 Section of Northbound 1, Second Ring Rd., Chengdu 610031, China.
5. Senior Engineer, State Key Laboratory for Bridge Structure Health and Safety, 103 JianShe Rd., Wuhan, Hubei 430034, China.