窗间墙对窗口水平火溢流阻隔效果研究

The study on the barrier effect of wall between windows on window overflow fire plume

建立1/2缩尺寸开口火溢流阻隔技术实验模型,研究窗间墙宽度对左右双室窗口火溢流阻隔效果的影响,得到窗口和窗间墙中心线温度竖向分布规律以及外立面横向和竖向温度分布规律二维图。利用FDS建立模拟模型,得到模拟结果和实验规律较吻合。结果表明,左右双室燃烧时,窗口溢出火羽流易发生融合;窗间墙越宽,阻隔路径越长,窗口溢出火羽流相互作用越小;当窗间墙宽度增至0.75 m时,能够有效阻隔左右窗口火溢流的相互影响。

The 1/2 scale building model was established to carry out the experiment about the structural barrier of window overflow fire plume. The effect of the width of the wall between windows on the barrier effect of the overflow fire plume in the left and right double chamber was studied. The vertical distribution of the temperature of the centerline of window and window wall has been obtained, and the horizontal and vertical two-dimensional graphs have been drawn. With the help of the FDS, a simulation model was estab?lished, and the simulation results were in good agreement with the experimental rules. The results showed that, when there was fire in both of the left and right chamber, the window overflow fire plume was easily fused; the wider the window wall is, the longer the barrier path, the smaller the interaction of the window over?flow fire plume;when the width of window wall increases to 0.75 m, the interaction between the left and right windows of the fire overflow can be effectively blocked.