1. Ph.D. Candidate, School of Civil and Environmental Engineering, Nanyang Technological Univ., 50 Nanyang Ave., Singapore 639798, Singapore.
2. Professor, School of Civil and Environmental Engineering, Nanyang Technological Univ., 50 Nanyang Ave., Singapore 639798, Singapore.
3. Professor, Key Laboratory of New Technology for Construction of Cities in Mountain Area, Chongqing Univ., Chongqing 400045, China; School of Civil Engineering, Chongqing Univ., Chongqing 400045, China.
4. Professor, Key Laboratory of New Technology for Construction of Cities in Mountain Area, Chongqing Univ., Chongqing 400045, China; School of Civil Engineering, Chongqing Univ., Chongqing 400045, China (corresponding author).