1. State Key Laboratory of Fire Science; University of Science and Technology of China; 96 Jinzhai Road Hefei Anhui 230026 China
2. Department of Building and Construction; City University of Hong Kong; Tat Chee Avenue Kowloon Hong Kong
3. USTC-City U Joint Advanced Research Center, Suzhou Key Laboratory of Urban Public Safety; Suzhou Institute for Advanced Study University of Science Technology of China; 166 Ren'ai Road Suzhou Jiangsu 215123 China