1. School of Civil Engineering, Central South University, Shaoshan S. Road, 22, Changsha 410075, China
2. School of Civil Engineering, Central South University, Shaoshan S. Road, 22, Changsha 410075, China (Corresponding author), e-mail: xuhuihe@csu.edu.cn, https://orcid.org/0000-0003-2746-182X