外立面阻隔结构限制下建筑开口外部火溢流温度分布特性的研究  

Study on the Temperature Distribution Characteristics of Window Spill Plume Along Building Exterior Facade Under the Restriction of Exterior Barrier Structure

作　　者：赵楠 ZHAO Nan(Beijing Chaoyang District Fire Rescue Detachment,Beijing 100027,China)

机构地区：[1]北京市朝阳区消防救援支队,北京100027

出　　处：《安全》2023年第2期54-59,共6页Safety & Security

摘　　要：为阻止建筑外立面开口火溢流的纵向蔓延,本文基于高斯分布等有关知识,理论分析阳台、窗口和窗槛墙3个外立面阻隔结构限制下的建筑开口外部火溢流的温度分布规律,并运用数值模拟的方法,数值拟合找出建筑外立面开口火溢流的纵向温度分布与窗口宽度、窗槛墙高度及阳台伸长之间的相关性。结果表明:阳台、窗槛墙和窗口阻隔结构共同影响着建筑外立面开口火溢流的外部温度分布,在对建筑外立面阻隔结构的设计中,必须考虑多阻隔结构对火溢流的阻隔作用,靠单一因素的参数设计,无法保证建筑外立面的防火安全。In order to prevent the vertical spread of window spill plume along building exterior fa?ade,based on Gauss distribution and other relevant knowledge,in this paper,the temperature distribution of window spill plume along building exterior facade under different exterior barrier structures including windows,windowsill walls and balconies is analyzed theoretically.Fire simulation experiments are conducted in this paper.Correlation between the temperature distribution of window spill plume along building exterior facade and dimensions of window,windowsill wall and balcony is obtained by numerical fitting and dimensional analyses.The correlation indicates that the windows,windowsill walls and balconies together affect the exterior temperature distribution of window spill plume along building exterior facade.The effect of multi-barrier structure on fire overflow must be considered,and the fire safety of building facade cannot be guaranteed by the parameter design of single factor.

关 键 词：火溢流 阳台 窗口 窗槛墙 外立面防火 

分 类 号：X932[环境科学与工程—安全科学]