1. Associate Professor, Key Laboratory of Ministry of Education for Geomechanics and Embankment Engineering, Hohai Univ., 1 Xikang Rd., Nanjing 210098, China (corresponding author).
2. Postgraduate Student, Key Laboratory of Ministry of Education for Geomechanics and Embankment Engineering, Hohai Univ., 1 Xikang Rd., Nanjing 210098, China.
3. Associate Professor, Key Laboratory of Ministry of Education for Geomechanics and Embankment Engineering, Hohai Univ., 1 Xikang Rd., Nanjing 210098, China.