1. School of Civil Engineering, Guilin University of Technology, Guilin 541004, P. R. China
2. Guangxi Key Laboratory of Green Building Materials and Construction Industrialization, Guilin University of Technology, Guilin 541004, P. R. China
3. Institute for Advanced Study, Chengdu University, Chengdu 610106, P. R. China
4. State Key Laboratory of Mechanical Behavior and System Safety of Traffic Engineering Structures, Shijiazhuang Tiedao University, Shijiazhuang 050043, P. R. China