气承膜式会议中心防火分隔措施研究与数值模拟分析

针对某气承膜式会议中心结构特点难以在建筑内采用实体防火墙、防火卷帘等方式进行防火分隔的问题,通过膜材燃烧实验,对燃烧破洞临界温度进行了测定。以临界破洞温度与单位面积膜材表面引燃所需要的辐射热流量作为膜结构火灾安全判定准则,提出防火分隔措施方案。根据火灾动力学原理,分析了火源附近气膜表面烟气温度和热辐射流量。结果表明该防火分隔措施基本可以达到防止火灾蔓延、保护气膜结构安全的消防安全目标。

Research and numerical simulation analysis on fire separation measures of air-supported membrane conference center

Given the structural characteristics of an air-supported membrane conference center, it is difficult to use physical firewalls, fire shutters, etc. for fire separation in the building. The critical temperature of the burning hole was measured through the membrane combustion experiment. Taking the critical temperature and the thermal radiation flux required for the ignition of the membrane surface per unit area as the fire safety judgment criteria of the membrane structure, the fire separation measures are proposed. According to fire dynamics principle, the smoke temperature and thermal radiation flux on the air-supported membrane surface near the fire source are analyzed. The results show that the fire separation measures can basically achieve the fire safety goals of preventing the spread of fire and protecting the safety of the gas membrane structure.