摘要
为分析幕墙建筑的火灾危险性,借助FDS模拟软件,建立全尺寸双层玻璃幕墙建筑模型,并对低楼层火灾特性进行数值模拟。结果表明:发生火灾时,双层幕墙间温度近似"V"字型分布;随着幕墙间距的增加,幕墙侧面高温点增多,玻璃随机炸裂的危险性急剧增大;随着时间的增加,起火房间的高温点向幕墙转移;起火房间内的CO浓度较高,且高层房间的CO浓度高于低层房间。该结果为幕墙建筑火灾防范提供了理论依据。
Aimed at analyzing the fire hazard,this paper describes the development of a full-size double glass curtain wall model and the simulation of the fire character of low floor with the help of FDS simulation software.The results show that,in the case of fire,the temperature between the double skin facade presents approximately ＂V＂-shaped distribution,and the increase of curtain wall space produces more high temperature dots,with resultant increases in danger of glass breakage,and what is more,high temperature dots in rooms on fire transfers to the curtain wall along with increasing time.The rooms on fire have a rather high CO concentration and higher rooms give relatively higher CO concentration than lower ones.The conclusion provides theoretical basis for the fire prevention of curtain wall space.
出处
《黑龙江科技学院学报》
CAS
2011年第4期317-320,共4页
Journal of Heilongjiang Institute of Science and Technology
关键词
玻璃幕墙
火灾特性
FDS
幕墙间距
温度
CO浓度
glass curtain wall
fire characters
FDS
curtain wall space
temperature
CO concentration
