窗口、窗槛墙和阳台对建筑外立面开口火溢流垂直蔓延的阻隔效果显著。本文采用全尺寸数值模拟的方法对建筑外立面开口火溢流的垂直蔓延进行了研究,观测了不同的窗口宽度、窗槛墙高度及阳台伸长对建筑外立面开口火溢流垂直蔓延的阻隔情况。并采用两种判定方法(单点温度判断法和温度等值线判断法),结合运用数值模拟找出建筑外立面开口火溢流扩散程度与窗口宽度、窗槛墙高度及阳台伸长之间的相关性,得出相关定量化的结论。这些定量化的结论,为建筑外立面的防火设计提供了有价值的参考。 Window, window wall and balcony on the facade of the building open flame overflow vertical spread of the barrier effect is significant. In this paper, the full-scale numerical simulation method was used to study the vertical spread of fire overflow in building facade, and the vertical spread of fire overflow was observed when different window widths, window sills height and balcony extension were used to open the building facade. Blocking situation. Two judgment methods (one-point temperature judgment method and temperature contour judgment method) were used in combination with numerical simulation to find out the degree of fire flooding diffusion and window width, the height of the window sill wall and the extension of the balcony The correlation between the conclusion of the relevant quantitative conclusions. These quantitative conclusions provide a valuable reference for the fire protection design of building facades.