摘要
开展实验,研究建筑幕墙构型与外立面之间的夹层效应对于保温材料火蔓延过程中火焰形态、近域温度场和质量损失的影响,研究间距变化对于火蔓延行为的影响。结果表明,夹层的特殊受限空间内火焰前锋呈现“倒V”型梯度分布;板材熔融滴落物质量随幕墙间距增大而减小;间距较大时,高温区域位于中心线的垂直区域,随着间距减小,中心线处的火焰温度降低。研究可为建筑平行玻璃幕墙的火灾危险性评估,建筑外部结构消防安全设计提供参考。
In this paper,the effects of interlayer effect between the configuration of curtain wall and facade on flame shape,near-field temperature field and mass loss during fire propagation of insulation material were investigated experimentally.The influence of distance variation on the flame spreading was studied.The results showed that the flame front in the special confined space of the interlayer presented an"inverted V"type gradient distribution;the mass of the molten droplet decreased with the increase of curtain wall spacing;when the distance was big,the high temperature appeared at the central vertical area,and the temperature at the centerline decreased with the reduction of the distance.The study is helpful to evaluate the fire risk of building parallel glass curtain wall and the fire safety design of building external structure.
作者
王经纬
李旺
万露露
何灿
李浩瀚
马鑫
WANG Jing-wei;LI Wang;WAN Lu-lu;HE Can;LI Hao-han;MA Xin(School of Environment and Civil Engineering,Anhui Jianzhu University,Anhui Hefei 230601,China;College of Environmental and Energy Engineering,Anhui Jianzhu University,Anhui Hefei 230601,China)
出处
《消防科学与技术》
CAS
北大核心
2020年第7期939-942,共4页
Fire Science and Technology
基金
安徽省自然科学基金项目(1908085QE250)
安徽高校协同创新项目(GXXT2019027-2)
国家“十三五”重点研发计划项目(2017YFC0803300)
火灾实验室开放项目(HZ2019-KF13)
安徽建筑大学校级科研项目(JZ192075)。
关键词
热安全
玻璃幕墙
保温材料
逆流火蔓延
thermal safety
glass curtain wall
thermal insulation material
downward fire spread
