长廊型高层建筑防排烟影响因素的模拟研究  

Simulation study of influence factors on smoke control and extraction in high-rise building with corridor

作　　者：吴玉剑[1] 许小磊[2] 

机构地区：[1]上海海事大学海洋科学与工程学院,上海201306 [2]江苏省绿色建筑工程技术研究中心,江苏苏州215021

出　　处：《中国安全生产科学技术》2013年第9期36-42,共7页Journal of Safety Science and Technology

摘　　要：为研究走廊中防排烟的影响因素,采用数值模拟的方法,对排烟口布置方式、走廊净高度和排烟速率以及挡烟垂壁等因素进行分析。结果表明,排烟口的布置方式不同对排烟效果的影响很大;排烟口置于顶棚时比排烟口置于侧壁时排烟效率高,走廊内危险性低;走廊净高对烟气的沉降有非常明显的影响,走廊净高低,危险性大;高层建筑走廊机械排烟时,排烟速率对排烟效果影响很大;挡烟垂壁能够较好地降低挡烟垂壁下游走廊内的危险性。The numerical simulation has been used to analyze the influence of smoke control and extraction induced by arrangement methods of smoke vent, storey heights, smoke exhaust rates and smoke retaining screen. The re- sults show that different arrangement methods of smoke vent have great influence on smoke exhaust effect ; compared with the method that set smoke vent on the side wall of the corridor when smoke vent is set on the top of the corri- dor, the efficiency of mechanical smoke exhaust is higher, and has a low risk in the corridor; storey heights have the very obvious influence on smoke filling while the lower story height and the greater the risk; different smoke ex- haust rates have great influence on smoke exhaust effect; the risk in the corridor at downstream of smoke retaining screen could be reduced, by setting smoke retaining screen in the corridor in high-rise buildings.

关 键 词：防排烟 排烟口 排烟速率 挡烟垂壁 数值模拟 

分 类 号：X913.3[环境科学与工程—安全科学]