1. Ph.D. Student, College of Environment and Civil Engineering, Chengdu University of Technology, Chengdu 610059, China.
2. Professor, State Key Laboratory of Mountain Bridge and Tunnel Engineering, Chongqing Jiaotong Univ., Chongqing 400074, China (corresponding author).
3. Professor, State Key Laboratory of Mountain Bridge and Tunnel Engineering, Chongqing Jiaotong Univ., Chongqing 400074, China.