1. Researcher, Dept. of Civil Engineering and Institute for Disaster Management and Reconstruction, Sichuan Univ., Chengdu 610064, China (corresponding author).
2. Professor, Dept. of Civil Engineering and Institute for Disaster Management and Reconstruction, Sichuan Univ., Chengdu 610064, China; MOE Key Laboratory of Deep Earth Science and Engineering, Chengdu 610064, China; Failure Mechanics & Engineering Disaster Prevention and Mitigation, Key Laboratory of Sichuan Province, Sichuan Univ., Chengdu 610064, China.