含阶梯式站厅地铁岛式车站火灾全尺寸实验研究

龙增; 刘畅; 杨宇轩; 仇培云; 陈嘉诚; 钟茂华

doi:10.16511/j.cnki.qhdxxb.2020.21.004

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清华大学学报（自然科学版） ›› 2020, Vol. 60 ›› Issue (9) : 787-794. DOI: 10.16511/j.cnki.qhdxxb.2020.21.004

物理与工程物理

含阶梯式站厅地铁岛式车站火灾全尺寸实验研究

龙增^1,2, 刘畅¹, 杨宇轩¹, 仇培云^1,3, 陈嘉诚³, 钟茂华¹

作者信息 +

Full-scale experimental study of a fire in an island subway station with a stepped hall

LONG Zeng^1,2, LIU Chang¹, YANG Yuxuan¹, QIU Peiyun^1,3, CHEN Jiacheng³, ZHONG Maohua¹

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文章历史 +

摘要

为研究特殊结构地铁车站火灾烟气蔓延特性，在某含阶梯式站厅的岛式车站内开展不同火灾场景下的全尺寸现场实验，通过分析烟气温度、烟气层高度、烟气扩散时间等重要参数，研究站台及阶梯式站厅2种火灾规模下车站各区域内的烟气扩散情况。结果表明：受自北向南的自然风压影响，站台起火时烟气在火源南侧积聚，导致站台南侧区域温升较大，下风向的3#楼扶梯处烟气层不稳定，火灾烟气扩散至连接通道；阶梯式站厅起火时，北侧出入口Ⅰ危险性较低，烟气未扩散至连接通道和站台内。研究结论可为该结构车站的防排烟设计提供实验数据支撑。

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.

导出引用

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 https://doi.org/10.16511/j.cnki.qhdxxb.2020.21.004

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[J]. Journal of Tsinghua University(Science and Technology). 2020, 60(9): 787-794 https://doi.org/10.16511/j.cnki.qhdxxb.2020.21.004

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基金

钟茂华,研究员,E-mail:mhzhong@tsinghua.edu.cn

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收稿日期	出版日期
2019-09-26	2020-09-15
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2020-07-04

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