摘要
针对超高中庭烟气流动距离长,火灾探测困难,排烟量及排烟方式无明确设计依据及热障效应等烟控设计难点,以某超高中庭为例进行烟控方案设计。基于火灾轴对称羽流的分析方法计算得出了超高中庭的机械排烟量。采取集中式和分散式相结合的排烟方法,依托避难层的空间布局,确定了"55%+3×15%"的分阶段排烟模式。运用FDS数值模拟分析排烟效果,结果表明,排烟方案可以改善热障效应的不利影响,满足中庭排烟要求。
Against difficulties such as long distance of smoke flowing,fire detection,lack of smoke exhaust design basis and thermal barrier effect,the smoke control of an ultra-high atrium was designed.Smoke extraction volume was calculated based on the axis symmetrical plume of fire.By using both centralized and decentralized smoke exhaust method and taking fully consideration of the spatial layout of refuge floors,a"55%+3×15%"phased smoke control strategy was determined.By using FDS numerical simulation,research on the smoke exhaust effect was done.The results showed that,the influence of thermal barrier effect was effectively crippled by the phased smoke control strategy,and the requirements of smoke exhaust in the atrium could be guaranteed.
作者
欧宸
刘松涛
卫文彬
OU Chen;LIU Song-tao;WEI Wen-bin(Institute of Building Fire Research, China Academy of Building Research, Beijing 100013, China;Disaster Prevention Research Center, Ministry of Housing and Urban- Rural Development, Beijing 100013, China)
出处
《消防科学与技术》
CAS
北大核心
2018年第2期185-187,共3页
Fire Science and Technology
基金
中国建筑科学研究院青年基金项目"建筑超高中庭空间分段排烟系统设计及有效性研究"(20160111331030070)
关键词
超高中庭
排烟
热障效应
FDS
ultra-high atrium
smoke exhaust
thermal barrier effect
FDS
作者简介
欧宸(1992-),男,北京人,中国建筑科学研究院建筑防火研究所工程师,学士,主要从事安全工程、火灾及消防工程等研究,北京市朝阳区北三环东路30号,100013。
