1. Key Laboratory for RC and PRC Structure of the Ministry of Education; and School of Civil Engineering, Southeast University, No. 2 Southeast University Rd., Nanjing Jiangsu 211189, China, http://orcid.org/0000-0002-8988-7685 (L.G.)
2. Key Laboratory for RC and PRC Structure of the Ministry of Education; and School of Civil Engineering, Southeast University, No. 2 Southeast University Rd., Nanjing Jiangsu 211189, China (Corresponding author), e-mail: daigl@seu.edu.cn