1. Associate Professor, School of Civil Engineering, Chongqing Univ., Chongqing 400045, China; Associate Professor, State Key Laboratory of Coal Mine Disaster Dynamics and Control, Chongqing Univ., Chongqing 400030, China; Researcher, Key Laboratory of New Technology for Construction of Cities in Mountain Area, Chongqing Univ., Chongqing 400045, China (corresponding author).
2. Professor and Vice President, School of Civil Engineering, Chongqing Univ., Chongqing 400450, China.
3. Graduate Student, School of Civil Engineering, Chongqing Univ., Chongqing 400045, China.
4. Associate Professor, Dept. of Structural Engineering, Univ. of California, San Diego, 9500 Gilman Dr., La Jolla, CA 92093-0085.