1. Associate Professor, School of Civil Engineering and Geomatics, Southwest Petroleum Univ., Chengdu 610500, China.
2. Master’s Student, School of Civil Engineering and Geomatics, Southwest Petroleum Univ., Chengdu 610500, China.
3. Professor, Dept. of Mechanical Engineering, Univ. of Maryland, 1000 Hilltop Circle, Baltimore, MD 21250 (corresponding author).
4. Professor, Research Institute of Engineering Safety Assessment and Protection, Southwest Petroleum Univ., Chengdu 610031, PR China.
5. Professor, School of Mechanics and Engineering, Southwest Jiaotong Univ., Chengdu 610031, PR China.