地铁站台火灾工况下不同排烟方案的排烟效果数值模拟研究
Numerical Simulation Research on Smoke Exhaust Effect of Different Smoke Exhaust Schemes under Fire Condition of Subway Station Platform
周仁敬 1王培海 1王龙1
作者信息
- 1. 成都市市政工程设计研究院有限公司 成都 610000
- 折叠
摘要
为研究地下车站全封闭岛式站台火灾时的排烟效果,以成都市某地铁车站为研究对象,利用FDS(火灾数值模拟)软件内的LES(大涡模拟)对开启屏蔽门首尾滑动门、独立设置辅助排烟风管、轨顶风道侧排风口、复合式屏蔽门四种排烟工况下的站台火灾场景进行数值模拟.结果表明:针对地下车站全封闭岛式站台公共区火灾,采用复合式屏蔽门的排烟模式,可快速排除站台层烟气,有效的改善站台层发生火灾时的逃生环境,为人员疏散提供更多的时间.
Abstract
To study the smoke-exhaust effect of the fire of the fully enclosed island platform of the underground station,by utilizing the software LES(Large Eddy Simulation)of FDS(Fire Numerical Simulation),the fire scene of the platform of a subway station in Chengdu was numerically simulated under the four smoke-exhaust conditions:opening the sliding doors at the front and rear of the platform screen door,setting up independent and auxiliary smoke-exhaust-ducts,installing exhaust vents on the rail-overhead-duct and the composite screen door.Based on the simulation results,the indices of temperature,mass concentration of CO,visibility,and other indicators at both the overall and local escape points within the platform are emphatically studied and analyzed.It is found that:the smoke exhaust mode of composite screen doors can quickly remove smoke from the platform,effectively improve the escape environment when a fire occurs on the platform and provide more time for personnel evacuation in a fully enclosed island platforms of the underground stations.
关键词
全封闭/屏蔽门/轨顶风道/侧排风口/复合式屏蔽门Key words
Fully enclosed screen door/Rail top air duct/Side air outlet/Composite screen door引用本文复制引用
出版年
2024
NETL
NSTL
万方数据