1. Ph.D. Candidate, Key Laboratory of Concrete and Pre-stressed Concrete Structures of Ministry of Education, Univ. of Southeast, Nanjing 210018, China; Engineer, Tongji Architectural Design (Group), 1230 Siping Rd., Shanghai 200092, China.
2. Professor, Key Laboratory of Concrete and Pre-stressed Concrete Structures of Ministry of Education, Univ. of Southeast, Nanjing 210018, China (corresponding author).