1. Professor, National and Provincial Joint Engineering Laboratory of Road & Bridge Disaster Prevention and Control, Lanzhou Jiaotong Univ., Lanzhou 730070, China (corresponding author).
2. Graduate Student, National and Provincial Joint Engineering Laboratory of Road & Bridge Disaster Prevention and Control, Lanzhou Jiaotong Univ., Lanzhou 730070, China.
3. Graduate Student, Key Laboratory of Road and Traffic Engineering of the Ministry of Education, Tongji Univ., Shanghai 201804, China.