1. Key Laboratory of Traffic Safety on Track of Ministry of Education, School of Traffic & Transportation Engineering, Central South University 1 , Changsha, 410075 Hunan, China
2. Department of Architecture and Civil Engineering, City University of Hong Kong 2 , Hong Kong 999077, China
3. College of Mechanical and Vehicle Engineering, Hunan University 3 , Changsha, 410082 Hunan, China
4. China Railway Siyuan Survey and Design Group Co., Ltd 4 , Wuhan 430063, China
5. CRRC Qingdao Sifang Co., Ltd 5 , Qingdao 266111, China