1. Ph.D. Student, School of Civil Engineering, Wuhan Univ., Wuhan 430072, P. R. China.
2. Professor, School of Civil Engineering, Wuhan Univ., Wuhan 430072, P. R. China (corresponding author).
3. Ph.D. Student, School of Civil Engineering, Wuhan Univ., Wuhan 430072, P. R. China
4. Associate Professor, School of Civil Engineering, Wuhan Univ., Wuhan 430072, P. R. China.
5. Senior Engineer, Chongqing City Comprehensive Transportation Hub (Group) Co., Ltd., Chongqing 400023, P. R. China.