1. College of Civil Engineering, Chongqing Univ., Chongqing 400045, China.
2. College of Civil Engineering, Chongqing Univ., Chongqing 400045, China (corresponding author).
3. China Railway Bridge Survey and Design Institute Group Co. Ltd., Wuhan 430101, China.
4. School of River and Ocean Engineering, Chongqing Jiaotong Univ., Chongqing 400074, China.