1. Lecturer, School of Civil Engineering, Changzhou Institute of Technology, Changzhou 213032, PR China; Key Laboratory of Concrete and Prestressed Concrete Structure, Ministry of Education, Southeast Univ., Nanjing 211189, PR China.
2. Lecturer, School of Civil Engineering, Zhejiang Univ. of Water Resources and Electric, Hangzhou 310018, PR China.
3. Lecturer, College of Civil Engineering and Architecture, Shandong Univ. of Science and Technology, Qingdao 266590, PR China; Shandong Key Laboratory of Civil Engineering Disaster Prevention and Mitigation, Shandong Univ. of Science and Technology, Qingdao 266590, PR China (corresponding author).