屏蔽门对地铁火灾烟气流动的影响分析

摘要

针对某地铁双层岛式车站,利用FDS模拟研究无屏蔽门和有屏蔽门两种情况发生火灾的场景,分析温度和烟气浓度分布:并对结果进行比较分析.结果表明,屏蔽门对于火灾烟气的扩散有显著的抑制作用,对地铁站台设计、火灾时人员疏散等具有一定的理论指导.%Based on an island platform of a double - subway,FDS was used to simulate two fire scenarios as with PSD and without PSD, temperature and smoke concentration were analysed, and results were compared.The resuits showed that PSD has evitable inhibition effect on smoke spread, which is of significant for design of platform and people evacuation.