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近年很多城市地铁车站已经安装安全门系统,当列车在站台发生火灾时,安全门系统将会影响到车站的烟气流动和温度分布。本文通过场模拟与网络模拟耦合得出安全门的等效阻力系数,在安全门等效阻力系数下,通过地铁热环境模拟软件STESS模拟得出各连接口风量,将这些模拟量作为边界条件代入FDS进行场模拟。通过FDS模拟通风排烟工况下的车站的温度、风速、能见度情况,结合实际的风速数据测量和分析,得到有利于人员疏散的通风排烟模式。
In recent years, many city subway stations have installed safety door systems. When a train fires on a platform, the safety gate system will affect the station’s flue gas flow and temperature distribution. In this paper, the equivalent resistance coefficient of safety gate is obtained by the coupling of field simulation and network simulation. Under the equivalent resistance coefficient of safety gate, STESS simulation of subway thermal environment is used to obtain the air volume of each connection port, and these analog values are substituted into FDS as boundary conditions Field simulation. Through the simulation of FDS station temperature, wind speed and visibility conditions, combined with the actual wind speed data measurement and analysis, to be conducive to the evacuation of ventilation and smoke patterns.