1. Professor, School of Civil Engineering, National Engineering Laboratory for High-Speed Railway Construction, Central South Univ., Changsha, Hunan 410075, China (corresponding author).
2. Ph.D. Candidate, School of Civil Engineering, Central South Univ., Changsha, Hunan 410075, China.
3. Associate Professor, School of Civil Engineering, Central South Univ., Changsha, Hunan 410075, China.
4. Professor, School of Civil Engineering, Central South Univ., Changsha, Hunan 410075, China.
5. Lecturer, Center for Built Infrastructure Research, School of Civil and Environmental Engineering, Univ. of Technology Sydney, Sydney, NSW 2007, Australia.