檐下阻隔物大小对木结构商业街火灾蔓延影响  

The Impact of Eave Obstruction Size on Fire Spread in Wooden Commercial Streets

作　　者：焦艳 黄叶晨 张泽龙 JIAO Yan;HUANG Yechen;ZHANG Zelong(School of Architecture and Planning,Anhui Jianzhu University,Hefei 230601,China;School of Environment and Energy Engineering,Anhui Jianzhu University,Hefei 230601,China)

机构地区：[1]安徽建筑大学建筑与规划学院,安徽合肥230601 [2]安徽建筑大学环境与能源工程学院,安徽合肥230601

出　　处：《安徽建筑大学学报》2025年第1期28-35,共8页Journal of Anhui Jianzhu University

基　　金：安徽省高校省级自然科学研究项目(2022AH030037)。

摘　　要：传统木结构商业街因建筑间距和建筑材料等问题易造成大规模火灾,针对传统木结构建筑商业街火灾火烧连营现象,探讨檐下阻隔物几何尺寸与风速变化对火灾蔓延的影响,分析火灾发生时火场温度、烟气和能见度等因素的变化规律,并利用PyroSim进行数值模拟和参数化分析。结果表明:檐下阻隔物几何尺寸与风速都对相邻建筑火蔓延行为有显著影响,檐下阻隔物的高度更有利于防控火灾蔓延到相邻建筑,可为传统建筑防火构造的设计提供理论参考。The traditional wooden commercial streets are prone to large-scale fires due to factors such as building spacing and construction materials.To address the phenomenon of fire spreading between connected wooden buildings in traditional commercial streets,this study investigates the influence of the geometric dimensions of eaves-level barriers and wind speed on fire propagation.It analyzes the variations in factors such as temperature,smoke,and visibility in the fire scene during a fire,and uses PyroSim for numerical simulations and parametric analysis.The results show that both the geometric dimensions of the eaves-level barriers and wind speed significantly impact the behavior of fire spreading to adjacent buildings.The height of the eaves-level barriers is particularly effective in preventing fire from spreading to neighboring buildings,providing theoretical reference for the fire prevention design of traditional buildings.

关 键 词：木结构 火灾蔓延 檐下阻隔物 防火构造 

分 类 号：TU998.1[建筑科学—市政工程]