大空间中庭及周边房间烟气运动和消防设计  

Smoke movement and fire safety design in and around large atriums

作　　者：孙占辉[1] 杨锐[1] 陈涛[1] 申世飞[1] 袁宏永[1] 

机构地区：[1]清华大学工程物理系,北京100084

出　　处：《清华大学学报（自然科学版）》2006年第9期1572-1576,共5页Journal of Tsinghua University(Science and Technology)

基　　金：中国博士后科研基金(2004036238)

摘　　要：采用数值模拟的方法,对大空间中庭结构内火灾及周边房间火灾的烟气运动情况进行了分析。着重分析了周边房间发生火灾后烟气及热羽流对上层房间的影响和烟气在中庭顶部的积聚和沉降情况。分析结果表明,在大空间内合理设置排烟系统对保证其消防安全至关重要;在大空间中庭内部排烟充分的情况下,可将大空间中庭作为与之相通的建筑结构的蓄烟空间和排烟途径,在其消防设计中可对中庭设置普通开口而不设置机械排烟系统。分析结果为大空间中庭及其周边房间的消防安全设计与评估提供参考。Fire smoke movement in large atriums and in the surrounding structures was analyzed numerically. The objective is to analyze the effect of the lower smoke and the buoyant plume on the upper structures, the smoke accumulation at the ceiling and the smoke sedimentation in the atrium. The analysis results show that a smoke control system is extremely important to ensure atrium fire safety. The smoke control system can enable the atrium to be used as a smoke reservor to exhaust smoke from structures around the atrium. The fire protection design of these structures can then include normal openings to the atrium and exclude mechanical exhaust system. These results can be used to design and evaluate the fire protection design of atrium structures.

关 键 词：性能化防火设计 大空间 中庭火灾 

分 类 号：X932[环境科学与工程—安全科学] TU998[建筑科学—市政工程]