1. Associate Professor, College of Civil Engineering and Architecture, Zhejiang Univ., Hangzhou 310058, China.
2. Associate Professor, Dept. of Civil and Environmental Engineering, Hong Kong Polytechnic Univ., Hung Hom, Kowloon, Hong Kong, China.
3. Associate Professor, College of Civil Engineering and Architecture, Zhejiang Univ., Hangzhou 310058, China (corresponding author).
4. Graduate Student, College of Civil Engineering and Architecture, Zhejiang Univ., Hangzhou 310058, China.
5. Assistant Professor, Dept. of Civil and Environmental Engineering, Stanford Univ., Stanford, CA 94305-4020.