建筑物窗口尺寸对火灾竖向蔓延影响的研究

Research of Flame Spread through a Building's Exterior Wall of Different Window Dimensions

本文以不同窗口尺寸下火灾沿外墙竖向蔓延情况为研究对象,通过对ASTM E2307标准实验台下的火灾场景进行模拟计算,完成了不同窗口尺寸下热通量随距燃烧室窗口下沿高度变化的曲线图,并对上层玻璃破裂时的热通量进行分析,得出窗口尺寸对于火灾竖向蔓延的影响,为性能化防火设计中窗口尺寸及窗口间距提供参考。

The influence of the window dimensions on vertical spread of fire was researched, through the numerical simulation of fire scene according to the ASTM E2307 test standard, the graphs for the heat flux vs. height above top of the window on different window dimensions were completed and the heat flux of glass fall-out above the top of window was analyzed, then the relations between the window dimension and the flame spread through the building＇ s exterior wall were point out, which provides a reference to determine window size and window spacing on the performance-based fire design.