1. Professor, Key Laboratory of Soft Soils and Geoenvironmental Engineering, Ministry of Education of China, Dept. of Civil Engineering, Zhejiang Univ., Hangzhou 310058, China (corresponding author).
2. M.S. Student, Key Laboratory of Soft Soils and Geoenvironmental Engineering, Ministry of Education of China, Dept. of Civil Engineering, Zhejiang Univ., Hangzhou 310058, China.
3. Engineer, Key Laboratory of Soft Soils and Geoenvironmental Engineering, Ministry of Education of China, Dept. of Civil Engineering, Zhejiang Univ., Hangzhou 310058, China.
4. Professor, Dept. of Civil Engineering, Zhejiang Univ., Hangzhou 310058, China.
5. Professor and Paul F. Kent Endowed Faculty Scholar, Dept. of Civil and Environmental Engineering, Univ. of Illinois at Urbana-Champaign, Champaign, IL 61801.
6. Professor, Key Laboratory of Soft Soils and Geoenvironmental Engineering, Ministry of Education of China, Dept. of Civil Engineering, Zhejiang Univ., Hangzhou 310058, China.