1. Ph.D. Student, College of Civil Engineering, Chongqing Jiaotong Univ., Chongqing 400074, China.
2. Professor, College of Civil Engineering, Chongqing Jiaotong Univ., Chongqing 400074, China (corresponding author).
3. College of Civil Engineering, Chongqing Jiaotong Univ., Chongqing 400074, China.
4. Professor, College of Civil Engineering, Chongqing Jiaotong Univ., Chongqing 400074, China.
5. Postdoctor, College of Material Science and Engineering, Chongqing Jiaotong Univ., Chongqing 400074, China.