1. Ph.D. Candidate, College of Water Conservancy and Hydropower Engineering, Hohai Univ., Nanjing 210098, China.
2. Professor, College of Water Conservancy and Hydropower Engineering, Hohai Univ., Nanjing 210098, China (corresponding author).
3. Research Fellow, Centre for Infrastructure Engineering and Safety, School of Civil and Environmental Engineering, Univ. of New South Wales, Sydney, NSW 2052, Australia.