1. Ph.D. Candidate, Key Laboratory of Concrete and Pre-stressed Concrete Structures of the Ministry of Education, Southeast Univ., Nanjing 211189, China.
2. Professor, Key Laboratory of Concrete and Pre-stressed Concrete Structures of the Ministry of Education, Southeast Univ., Nanjing 211189, China; Professor, College of Civil Engineering and Mechanics, Xiangtan Univ., Xiangtan 411105, China (corresponding author).