1. Professor, Dept. of Geotechnical Engineering, College of Civil Engineering, Tongji Univ., 1239 Siping Rd., Shanghai 200092, P.R. China (corresponding author).
2. Graduate Student, Dept. of Geotechnical Engineering, College of Civil Engineering, Tongji Univ., 1239 Siping Rd., Shanghai 200092, P.R. China.
3. Associate Professor, School of Civil Engineering and Architecture, East China Jiaotong Univ., 808 Shuanggang East Ave., Nanchang 330013, P.R. China.
4. Associate Professor, Dept. of Civil Engineering, Shanghai Univ., 99 Shang-Da Rd., Shanghai 200444, P.R. China.
5. Professor, School of Civil Engineering and Architecture, East China Jiaotong Univ., 808 Shuanggang East Ave., Nanchang 330013, P.R. China; Professor, Research Center of Coastal and Urban Geotechnical Engineering, Zhejiang Univ., Hangzhou, Zhejiang 310058, P.R. China.