1. Ph.D. Candidate, Dept. of Civil and Environmental Engineering, Virginia Tech, Blacksburg, VA 24061; formerly, Ph.D. Student, School of Civil Engineering, Southeast Univ., No. 2 Sipailou, Nanjing 210096, China.
2. Associate Professor, Key Laboratory of Concrete and Prestressed Concrete Structure of Ministry of Education, Southeast Univ., No. 2 Sipailou, Nanjing 210096, China (corresponding author).
3. Professor, School of Civil Engineering, Southeast Univ., No. 2 Sipailou, Nanjing 210096, China.
4. Graduate Student, School of Civil Engineering, Southeast Univ., No. 2 Sipailou, Nanjing 210096, China.