1. Ph.D. Candidate, Dept. of Civil and Environmental Engineering, The Hong Kong Polytechnic Univ., Hong Kong 999077, China; Ph.D. Candidate, Dept. of Geotechnical Engineering, College of Civil Engineering, Tongji Univ., Shanghai 200092, China.
2. Professor, Dept. of Civil and Environmental Engineering, The Hong Kong Polytechnic Univ., Hong Kong 999077, China (corresponding author).
3. Professor, College of Civil and Transportation Engineering, Shenzhen Univ., Shenzhen 518060, China.
4. Professor, Dept. of Geotechnical Engineering, College of Civil Engineering, Tongji Univ., Shanghai 200092, China.