Full-scale experimental study of a fire in an island subway station with a stepped hall
LONG Zeng1,2, LIU Chang1, YANG Yuxuan1, QIU Peiyun1,3, CHEN Jiacheng3, ZHONG Maohua1
1. Institute of Public Safety Research, Department of Engineering Physics, Tsinghua University, Beijing 100084, China; 2. Beijing Key Laboratory of City Integrated Emergency Response Science, Beijing 100084, China; 3. Guangzhou Metro Group Co., Ltd., Guangzhou 510330, China
Abstract：Fire-induced smoke spread in a subway station was studied using full-scale experiments for various fire scenarios in an island station with a stepped hall. The smoke diffusion was characterized by measuring some key parameters, such as the smoke temperature, smoke layer height, and smoke diffusion time, for fires in the platform hall and in the stepped hall fire for two fire loads. The results show that during the platform fire, the natural wind pressure from north to south caused smoke and heat to accumulate at the south end of the platform. The smoke layer just downwind of the 3# escalator was not stable with smoke inside the connecting channel. The fire in the stepped station hall resulted in less smoke near the northern entrance and the smoke did not spread into the connecting channel or the platform. These results provide experimental data for smoke control and exhaust designs of stations with the same structure.
龙增, 刘畅, 杨宇轩, 仇培云, 陈嘉诚, 钟茂华. 含阶梯式站厅地铁岛式车站火灾全尺寸实验研究[J]. 清华大学学报（自然科学版）, 2020, 60(9): 787-794.
LONG Zeng, LIU Chang, YANG Yuxuan, QIU Peiyun, CHEN Jiacheng, ZHONG Maohua. Full-scale experimental study of a fire in an island subway station with a stepped hall. Journal of Tsinghua University(Science and Technology), 2020, 60(9): 787-794.
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2020, Vol. 60 
