1. Associate Professor, School of Civil Engineering, Southwest Jiaotong Univ., Chengdu 614202, China; School of Civil Engineering, Southeast Univ., Nanjing 210096, China.
2. Professor, School of Civil Engineering, Southeast Univ., Nanjing 210096, China (corresponding author).
3. Graduate Student, School of Civil Engineering, Southeast Univ., Nanjing 210096, China.