1. College of Civil Engineering, Fuzhou University, 2 Xueyuan Rd., University Town, Fuzhou, Fujian 350108 China
2. College of Civil Engineering, Fuzhou University, 2 Xueyuan Rd., University Town, Key Lab of Fujian Province, Fuzhou 350108, China (Corresponding author), e-mail: huangfuyun@fzu.edu.cn, http://orcid.org/0000-0003-4672-1834