1. Associate Professor, Dept. of Civil Engineering, Zhejiang Univ., Hangzhou, Zhejiang, 310058, P.R. China (corresponding author).
2. Ph.D. Candidate of Zhejiang Univ., Dept. of Civil Engineering, Jiangsu Univ., Zhenjiang, Jiangsu, 212013, P.R. China.
3. Professor, Dept. of Civil Engineering, Zhejiang Univ., Hangzhou, Zhejiang, 310058, P.R. China.
4. Lecturer, School of Planning, Architecture and Civil Engineering, Queen’s Univ., Belfast, BT9 5AG, UK.