外墙窗户面积及位置对建筑外立面火蔓延的影响  

Influence of the area and location of windows in facade fire spread

作　　者：汪华兵 WANG Hua-bing(Ganzhou Fire and Rescue Division,Jiangxi Ganzhou 342500,China)

机构地区：[1]赣州市消防救援支队,江西赣州342500

出　　处：《消防科学与技术》2021年第12期1743-1746,共4页Fire Science and Technology

摘　　要：搭建20层的全尺寸办公建筑三维模型,通过设置不同窗户面积、窗户位置研究外窗对建筑外立面竖向火蔓延的影响。研究发现窗户面积较大时,火灾竖向蔓延速率更快,室内温度升高更快,采用大的窗墙比更容易加快火灾在建筑外立面的竖向蔓延。在竖直位置上,随着窗户上移,各楼层的引燃时间均增加。A three-dimensional model of a 20 story full-scale office building was built,and the influence of window on the vertical fire spread over the building facade was studied by setting different window area and location.It was found that: When the window area was larger,the vertical spread rate of fire was faster,and the indoor temperature raised faster.The large windowwall ratio accelerated the vertical spread of fire over the building facade.As the window moved upward in the vertical position,the ignition time of each floor increased.

关 键 词：建筑火灾 外立面 火蔓延 窗槛墙 

分 类 号：X913.4[环境科学与工程—安全科学] TU998.1[建筑科学—市政工程]