1. Ph.D. Student, School of Civil Engineering, Central South Univ., Changsha 410075, China.
2. Associate Professor, School of Civil Engineering, National Engineering Laboratory for Construction of High Speed Railway, Central South Univ., Changsha 410075, China (corresponding author).
3. Professor, School of Civil Engineering, Central South Univ., Changsha 410075, China.
4. Master Student, School of Civil Engineering, Central South Univ., Changsha 410075, China.