1. Associate Professor, MOE Key Laboratory of Soft Soils and Geoenvironmental Engineering, Zhejiang Univ., Hangzhou 310027, China. E-mail: k87952267@yahoo.com.cn
2. Professor and Director, MOE Key Laboratory of Soft Soils and Geoenvironmental Engineering, Zhejiang Univ., Hangzhou 310027, China (corresponding author). E-mail: cym@civil.zju.edu.cn
3. Graduate Student, MOE Key Laboratory of Soft Soils and Geoenvironmental Engineering, Zhejiang Univ., Hangzhou 310027, China. E-mail: hkfreud@126.com