地铁岛式车站火灾排烟模式的计算与验证

Calculation and verification of metro island-style station fire purging mode

针对地下岛式车站,分析通风排烟系统的组成和功能,提出有效站台列车排烟模式。利用FDS大涡模拟软件,计算站台列车火灾的烟气扩散过程,分析烟气控制效果、气流组织及可用疏散时间,验证火灾排烟模式的有效性。研究结果有助于地铁车站通风排烟系统运行模式的选择。

The composition and function of underground islandstyle station smoke ventilation system are analyzed, and the effective platform train purging mode is suggested. Utilizing FDS large eddy simulation software, the diffusion process of platform train fire is calculated, and the effect of smoke control, air distribution and available safety egress time are analyzed to vali date the fire purging mode. These research results can help with the choice of metro station smoke ventilation system operation mode.