1. Ph.D. Candidate, School of Civil Engineering, Central South Univ., 22 South Shaoshan St., Changsha, Hunan, China.
2. Associate Professor, School of Civil Engineering, Central South Univ., 22 South Shaoshan St., Changsha, Hunan 410002, China (corresponding author).
3. Professor, School of Civil Engineering, Central South Univ., 22 South Shaoshan St., Changsha, Hunan 410002, China.
4. Professor, School of Civil Engineering, Central South Univ., 22 South Shaoshan St., Changsha, Hunan 410002, China; Australian Research Council Centre of Excellence for Geotechnical Science and Engineering, School of Engineering, Univ. of Newcastle, Callaghan, New South Wales 2308, Australia.
5. School of Civil Engineering, Central South Univ., 22 South Shaoshan St., Changsha, Hunan 410002, China.