不同结构因子下带连廊高层建筑外墙火竖向蔓延数值模拟  

Numerical Simulation of Vertical Fire Spreading on the Exterior Wall of High-Rise Buildings with Corridors of Different Structural Factors

作　　者：王宇[1] 王馨瑶 齐琳 马福生[3] 汤维维 WANG Yu;WANG Xinyao;QI Lin;MA Fusheng;TANG Weiwei(School of Civil Engineering,Shenyang Jianzhu University,Shenyang,China,110168;School of Civil Engineering,Shenyang Urban Construction University,Shenyang,China,110167;School of Architecture and Urbanplanning,Shenyang Jianzhu University,Shenyang,China,110168;Liaoning Zhucheng Special Engineering Co.Ltd.,Shenyang,China,110046)

机构地区：[1]沈阳建筑大学土木工程学院,辽宁沈阳110168 [2]沈阳城市建设学院土木工程学院,辽宁沈阳110167 [3]沈阳建筑大学建筑与规划学院,辽宁沈阳110168 [4]辽宁筑程特种工程有限公司,辽宁沈阳110046

出　　处：《沈阳建筑大学学报（自然科学版）》2024年第2期293-301,共9页Journal of Shenyang Jianzhu University：Natural Science

基　　金：国家自然科学基金项目(52078309);辽宁省教育厅面上项目(LJKZ0560)。

摘　　要：目的 研究带连廊高层建筑发生火灾时火焰蔓延的变化规律,为该类建筑的防火设计提供参考。方法 应用火灾数值模拟软件FDS建立一个33层带连廊建筑模型,分别改变结构因子、窗口数量两种因素进行模拟,分析该模型在不同条件下的温度分布等温线和温度曲线。结果 结构因子为0.4、0.8、1.2,窗口数量为二、三、四时,达到危险温度540℃,火焰融合高度随结构因子和窗口数量增加而上升;随着结构因子的增加,火焰融合高度提高了0.25~12.5 m;随着窗口数量的增加,火焰融合高度上升了0.9~6.37 m;结论 带连廊高层建筑外墙火焰蔓延高度受结构因子和窗口数量影响;随着窗口数量增加,结构因子对火焰融合高度影响越大,结构因子越大,火焰融合高度越高;建议带连廊高层建筑连廊部分结构因子小于0.8,并选用结构因子为0.8时的火焰融合高度作为外部蔓延防火阻隔区高度。To study the variation law of flame propagation in the event of fire in high-rise buildings with corridors,and to provide reference for the fire protection design of such buildings.A 33-storey building model with corridor was established by using the fire numerical simulation software FDS,and the structural factors and the number of windows were changed to simulate the two factors,and the temperature distribution isotherm and temperature curve of the model under different conditions were analyzed.When the structural factors were 0.4,0.8 and 1.2,and the number of windows was two,three and four,the dangerous temperature of 540℃ was reached,and the flame fusion height increased with the increase of the structural factors and the number of windows.With the increase of structural factors,the flame fusion height increased by 0.25~12.5 m;With the increase of the number of windows,the flame fusion height increased by 0.9~6.37 m;The flame propagation height of the exterior wall of high-rise buildings with corridors is affected by structural factors and the number of windows.As the number of windows increases,the greater the influence of structural factors on the flame fusion height,the larger the structural factor,the higher the flame fusion height.It is recommended that the structural factor of the corridor part of the high-rise building with corridor is less than 0.8,and the flame fusion height when the structural factor is 0.8 is selected as the height of the external spread fire barrier.

关 键 词：带连廊高层建筑 结构因子 火焰融合 数值模拟 

分 类 号：TU352.5[建筑科学—结构工程]