1. Associate Professor, College of Civil and Transportation Engineering, Hohai Univ., Nanjing 210024, PR China (corresponding author).
2. Master, College of Civil and Transportation Engineering, Hohai Univ., Nanjing 210024, PR China.
3. Ph.D. Candidate, Dept. of Civil and Environmental Engineering, Univ. of California, Berkeley, Berkeley, CA 94706.
4. Master Student, College of Civil and Transportation Engineering, Hohai Univ., Nanjing 210024, PR China.