1. Lecturer, College of Civil Engineering and Architecture, Henan Univ. of Technology, Number 32 Building, Lianhua Rd., Zhengzhou 450001, China.
2. M.D. Student, College of Civil Engineering and Architecture, Henan Univ. of Technology, Number 32 Building, Lianhua Rd., Zhengzhou 450001, China.
3. State Key Laboratory of Hydroscience and Engineering, Dept. of Hydraulic Engineering, Tsinghua Univ., Number 1 Tshinghua Campus, Beijing 100084, China.
4. Professor, MOE Key Laboratory of Soft Soils and Geoenvironmental Engineering, Zhejiang Univ., Anzhong Building, 866 Yuhangtang Rd., Hangzhou 310058, China (corresponding author).