1. Associate Professor, State Key Laboratory of Hydrology-Water Resources and Hydraulic Engineering, Hohai Univ., Nanjing, 210098, China; and Associate Professor, Dept. of Engineering Mechanics, Hohai Univ., Nanjing, 210098, China.
2. Professor, Dept. of Civil and Environmental Engineering, Washington State Univ., Pullman, WA 99164-2910; and Cheung Kong Scholar, State Key Laboratory of Hydrology-Water Resources and Hydraulic Engineering, Hohai Univ., Nanjing, 210098, China (corresponding author).