1. CAS Key Laboratory of Mechanical Behavior and Design of Materials (LMBD) Department of Modern Mechanics; University of Science and Technology of China; Hefei 230027 Anhui P. R. China
2. State Key Laboratory of Fire Science; University of Science and Technology of China; Hefei 230027 Anhui P. R. China
3. School of Civil Engineering and Architecture; Anhui University of Science and Technology; Huainan 232001 Anhui P. R. China
4. Department of Civil Engineering; Anhui Jianzhu University; Hefei 230601 Anhui P. R. China