1. Associate Professor, Dept. of Bridge Engineering, Southwest Jiaotong Univ., 111 Section of the Northbound 1, Second Ring RD, Chengdu 610031, China.
2. Assistant Professor, Dept. of Civil and Environmental Engineering, Colorado School of Mines, Golden, CO 80401.
3. Ph.D. Candidate, Dept. of Bridge Engineering, Southwest Jiaotong Univ., 111 Section of the Northbound 1, Second Ring RD, Chengdu 610031, China (corresponding author).
4. Ph.D. Candidate, Dept. of Civil, Architectural, and Environmental Engineering, Missouri Univ. of Science and Technology, 1401 North Pine St., Rolla, MO 65401.
5. Professor, Dept. of Bridge Engineering, Southwest Jiaotong Univ., 111 Section of the Northbound 1, Second Ring RD, Chengdu 610031, China.