1. School of Earth Science and Engineering, Nanjing University, Nanjing, China
2. China Design Group Corporation Limited, Nanjing, China
3. College of Civil and Transportation Engineering, Hohai University, Nanjing, China
4. Department of Mechanical and Aerospace Engineering, Politecnico di Torino, Torino, Italy
5. School of Rail Transportation, Soochow University, Suzhou, China