1. Ph.D. Candidate, Dept. of Bridge Engineering, Southeast Univ., Nanjing 210018, China.
2. Professor, Dept. of Bridge Engineering, Southeast Univ., Nanjing 210018, China (corresponding author).
3. Associate Professor, Dept. of Civil and Structural Engineering, Hong Kong Polytechnic Univ., Hung Hom, Hong Kong.
4. Senior Lecturer, School of Engineering and Computing Sciences, Durham Univ., Durham DH1 3LE, U.K.; Associate Professor, Dept. of Civil and Environmental Engineering, Univ. of Pittsburgh, Pittsburgh, PA 15260.