1. School of Mechatronics and Vehicle Engineering, Chongqing Jiaotong University, Chongqing 400074, China
2. School of Civil Engineering, Chongqing Jiaotong University, Chongqing 400074, China
3. State Key Laboratory of Mountain Bridge and Tunnel Engineering, Chongqing Jiaotong University, Chongqing 400074, China