1. Ph.D. Candidate, Dept. of Civil Engineering, Chongqing Jiaotong Univ., Chongqing 400074, China (corresponding author).
2. Professor, Chongqing Jiaotong Univ., Chongqing 400074, China.
3. Professor, Dept. of Civil Engineering, Chongqing Jiaotong Univ., Chongqing 400074, China.
4. Professor, Key Laboratory of Polymer Materials, Sichuan Univ., Chengdu 600015, China.
5. M.D. Candiate, Dept. of Civil Engineering, Chongqing Jiaotong Univ., Chongqing 400074, China.