1. Professor, School of Civil Engineering, Central South Univ., Changsha 410083, China.
2. Ph.D. Student, School of Civil Engineering, Central South Univ., Changsha 410083, China.
3. Associate Professor, School of Civil Engineering, Central South Univ., Changsha 410083, China.
4. Lecturer, School of Computer Science and Engineering, Central South Univ., Changsha 410083, China (corresponding author).
5. Professor, Dept. of Civil and Environmental Engineering, Univ. of Maryland, College Park, MD 20742.
6. Senior Engineer, State Key Laboratory of Rail Transit Engineering Informatization (FSDI), 2 Xiying Rd., Yanta District, Shanxi 710043, China.
7. Senior Engineer, China Hunan Zhongda Design Institute Co. Ltd., 22 Shaoshan South Rd., Tianxin District, Changsha 410075, China.