1. Professor, State Key Laboratory of Hydraulic Engineering Simulation and Safety, Tianjin Univ., Weijin Rd., Nankai District, Tianjin 300072, China.
2. Ph.D. Student, Dept. of Civil Engineering, Tianjin Univ., Weijin Rd., Nankai District, Tianjin 300072, China.
3. Professor, State Key Laboratory of Hydraulic Engineering Simulation and Safety, Tianjin Univ., Weijin Rd., Nankai District, Tianjin 300072, China (corresponding author).
4. Research Student, Dept. of Civil Engineering, Tianjin Univ., Weijin Rd., Nankai District, Tianjin 300072, China.