正压区域疏散门开启可靠性分析

Analysis on Fire Door Opening Reliability in Positive Pressure Room

应用控制因素法对正压区域疏散门开启可靠性进行分析。先确定了中国人群最大推力,从防烟和疏散角度阐述了最小设计压差和最大设计压差的由来。以人群最大推力为限值验算了标准防火门的开门力。结果表明,在现行压差范围下,仍有部分防火门存在开启困难的现象。基于压差和开启力矩对开门力影响的权重,计算得出了标准防火门开启力矩允许范围13～47 N·M,给出了住宅建筑疏散门的安全宽度0.6～0.9m,确保正压区域疏散门开启的可靠性。

The fire door opening reliability in positive room with method of controlling factors was analyzed. First, the Chinese population maximum thrust is determined. Then the origin of the minimum pressure difference is discussed from the perspective of smoke control. The origin of the maximum pressure difference is discussed from the perspective of safe evacuation. With the maximum thrust as the criterion, the pushing forces of all standard fire doors are checked.Based on the weight influence of opening moment and pressure difference on opening force, calculates the permitted orange of fire door opening moment 13～47 N·M, demonstrates the fire door recommended specifications 0.6～0.9 m width for residential buildings.