双层地铁站台火灾安全性分析  

Analysis of Safety during Subway Platform Firing

作　　者：童艳[1] 何嘉鹏[1] 

机构地区：[1]南京工业大学城市建设与安全环境学院暖通工程系,江苏南京210009

出　　处：《地下空间与工程学报》2006年第2期293-297,共5页Chinese Journal of Underground Space and Engineering

基　　金：江苏省社会发展计划项目"城市地铁站火灾烟气控制研究"(BS2003031)

摘　　要：采用双层区域模拟,建立了某双层地铁车站火灾的数学物理模型。在此基础上,应用CFAST3.1.7软件求解了各空间上层烟气温度\浓度\厚度跟随时间的变化关系,进而分析得出火灾达到危险状态所需时间大于人员安全疏散时间的结论。该结论对车站防排烟系统的合理布置具有重要的指导意义。For the circumstance of a subway＇s platform firing, this article established mathematical and physical model by using Two-layer zone simulation. On this basis, CFAST software is used to calculate the variation of upper layer＇s temperature that density for thickness with time. Thus, a conclusion is obtained that the time for fire＇s approaching dangerous state is longer than that for people evacuation. This conclusion has an important guiding meaning for smoke preventing/ejecting system＇s reasonable arrangement.

关 键 词：区域模拟 CFAST软件 危险临界条件 安全疏散 

分 类 号：TU998.1[建筑科学—市政工程] TP393.08[自动化与计算机技术—计算机应用技术]