基于FDS的外窗形式对建筑外立面火灾蔓延影响的模拟

Based on FDS to Simulate the Impact of Exterior Window Form on the Fire Spread along the Building Faade

为探讨火灾时建筑外窗形式对火灾蔓延的影响,本文以某可发性聚苯乙烯(EPS)外墙7层住宅建筑为对象,借助火灾动力学模拟软件(FDS),模拟了火灾时普通窗和飘窗等两种外窗形式的温度、CO浓度和蔓延速度,对比分析表明,与普通窗相比,飘窗对建筑外立面火灾蔓延有一定的阻碍作用,但有其局限性.

To discusse the impact of the form of building exterior windows on the fire spread,this paper took the 7storey residential building with Expandable Polystyrene( EPS) exterior wall as the object,and simulated the temperature,the CO concentrating and the spread velocity of the two exterior wall forms namely the ordinary window and the bay window while fire with the help of the fire dynamics simulator( FDS). The contrast analysis shows that the bay window has a certain impedimental effect on the fire spread along the building faade compared with the ordinary window,but which is of the limitations.