大型室内商业步行街防火分隔技术

Fire separation technology of great indoor pedestrian street

以某城市综合体为例,通过设置亚安全区解决防火分区面积过大、疏散距离过长的问题。通过数值模拟和实体火灾试验对大型综合性建筑中的室内商业步行街采用玻璃隔墙替代防火分隔墙的可行性进行研究。设置火灾场景,模拟采用边墙型喷头保护、采用窗式喷头保护、无水喷淋保护时钢化玻璃的耐火表现、破碎时间、隔热性能。火源设定为木垛火与油池火。以实体火灾实验验证数值模拟结果,分析钢化玻璃作为防火分隔的可行性,为具体消防设计和消防行政许可提供一定试验数据和理论支撑。

An urban complex was used as an example to solve the problems of big fire compartmentation and long evacuation dis- tance by setting sub safety area. The feasibility of replace fire wall with glass wall was researched by numerical simulation and fire experiment on indoor pedestrian street in urban complex building. Fire scenarios were set to simulate the fire resistance performance and break rime＇and heat insulation performance un- der the conditions of protected by sidewall sprinkler, protected by window sprinklei＂ and no protection by sprinkler. The fire sources were wood crib and oil pool. The numerical simulation result was confirmed by fire experiment and the feasibility of fire separation by tempered glass was analyzed. This could be the reference to fire protection design and fire protection admin- istrative licensing.