1. Professor, Dept. of Geotechnical Engineering, Tongji Univ., Shanghai 200092, China (Corresponding author).
2. Graduate Student, Dept. of Geotechnical Engineering, Tongji Univ., Shanghai 200092, China.
3. Assistant Professor, Dept. of Civil and Environmental Engineering, Louisiana State Univ., Baton Rouge, LA 70803.
4. Assistant Professor, Dept. of Geotechnical Engineering, Tongji Univ., Shanghai 200092, China,
5. Professor, Dept. of Geotechnical Engineering, Tongji Univ., Shanghai 200092, China.