中庭类高层建筑防排烟技术优化设计  

Optimization Design of Smoke Extraction in the High-rise Building With Atrium

作　　者：韩如适[1] 朱国庆[1] 张国维[1] 张媛媛[1] 

机构地区：[1]中国矿业大学,江苏徐州221116

出　　处：《工业安全与环保》2013年第6期48-51,共4页Industrial Safety and Environmental Protection

摘　　要：理论分析了火源热释放速率对火灾产烟量的影响,对中庭类建筑的排烟方式进行了优化设计。提出火灾初期采用机械排烟、中后期采用自然排烟的优化排烟方案。以徐州某医院内科医技楼为例,通过建立火灾发展模型、设定火灾场景和采用火灾模拟软件FDS对其中庭火灾烟气温度和烟气的蔓延规律进行了数值模拟研究。分析比较了3种火灾烟气控制方案。数值模拟的结果表明,当火源最大热释放速率为4MW时,火灾初期采用机械排烟、中后期采用自然排烟的排烟方式较只采用机械排烟、或只选取自然排烟排烟方式的效果好,与基于5种羽流模型理论推断的结果相吻合。The influences of the fire source heat release rate of fire on the quantity of smoke are analyzed to achieve the optimization design of the way to exhaust smoke in the building with the atrium.The schemes of the smoke exhaust are put forward,in which the mechanical exhaust and natural exhaust is adopted respectively in initial stage and middle-later period.Taking one hospital in Xuzhou as an example,fire development model is established,fire scenarios are designed and fire simulation software FDS is used to numerically simulate the fire smoke temperature and the spreading rules.Three kinds of fire and smoke control programs are analyzed and compared.When the maximum heat release rate of fire is 4 MW,the mechanical exhaust is used in initial stages of fire and natural exhaust in the middle-later period,which is better than only adopting mechanical exhaust or the natural smoke exhaust.It is tested and verified at last,consistent with the results of theoretical analysis.

关 键 词：中庭 高层建筑 防排烟 优化设计 数值模拟 

分 类 号：TU972.4[建筑科学—建筑设计及理论]