1. Associate Professor, MOE Key Laboratory of High-Speed Railway Engineering, Southwest Jiaotong Univ., Chengdu 610031, P.R. China.
2. Master Candidate, MOE Key Laboratory of High-Speed Railway Engineering, Southwest Jiaotong Univ., Chengdu 610031, P.R. China (corresponding author).
3. Master Candidate, MOE Key Laboratory of High-Speed Railway Engineering, Southwest Jiaotong Univ., Chengdu 610031, P.R. China.
4. Professor, MOE Key Laboratory of High-Speed Railway Engineering, Southwest Jiaotong Univ., Chengdu 610031, P.R. China.
5. Ph.D. Candidate, MOE Key Laboratory of High-Speed Railway Engineering, Southwest Jiaotong Univ., Chengdu 610031, P.R. China.