1. Professor, School of Civil Engineering, Chongqing Univ., Chongqing 400044, China (corresponding author).
2. Ph.D. Candidate, School of Civil Engineering, Chongqing Univ., Chongqing 400045, China.
3. Ph.D. Candidate, Hunan Provincial Key Laboratory of Geotechnical Engineering for Stability Control and Health Monitoring, Hunan Univ. of Science and Technology, Xiangtan 411201, China.
4. M.S. Student, School of Civil Engineering, Chongqing Univ., Chongqing 400045, China.