1. Postgraduate Student, School of Urban Railway Transportation, Shanghai Univ. of Engineering Science, Shanghai 201620, China.
2. Associate Professor, School of Urban Railway Transportation, Shanghai Univ. of Engineering Science, Shanghai 201620, China (corresponding author).
3. Associate Professor, School of Civil, Environmental and Chemical Engineering, Royal Melbourne Institute of Technology (RMIT), Melbourne, VIC 3001, Australia.
4. Professor, Shanghai Key Laboratory for Digital Maintenance of Buildings and Infrastructure, Dept. of Civil Engineering, Shanghai Jiao Tong Univ., Shanghai 200240, China.