1. Professor, Dept. of Geotechnical Engineering, Tongji Univ., 1239 Siping Rd., Shanghai 20092, China.
2. Visiting Professor, Dept. of Geotechnical Engineering, Tongji Univ., 1239 Siping Rd., Shanghai 20092, China (corresponding author).
3. Researcher, Dept. of Geotechnical Engineering, Tongji Univ., 1239 Siping Rd., Shanghai 20092, China.