室内商业步行街排烟模式对烟气运动的影响分析  

Analysis on the influence of smoke exhaust mode on smoke movement in indoor commercial pedestrian street

作　　者：张丙森 肖剑仁[2] 陈健 ZHANG Bingsen;XIAO Jianren;CHEN Jian(School of Emergency Management and Safety Engineering,China University of Mining and Technology(Beijing),Beijing 100083;Fujian Provincial Institute of Architectural Design and Research CO.,LTD.,Fuzhou 350001;Institute of Building Fire Research,China Academy of Building Research,Beijing 100013)

机构地区：[1]中国矿业大学(北京)应急管理与安全工程学院,北京100083 [2]福建省建筑设计研究院,福建福州350001 [3]中国建筑科学研究院有限公司建筑防火研究所,北京100013

出　　处：《福建建筑》2023年第2期122-127,共6页Fujian Architecture & Construction

基　　金：福建省科技计划项目“室内商业步行街火灾烟气蔓延特性及控制关键技术研究与应用”(2019Y3002)。

摘　　要：室内商业步行街在为消费者带来良好体验的同时,也存在着巨大的消防隐患。一旦发生火灾,烟雾、高温等极易造成群死群伤的重大事故。通过Pyrosim仿真模拟,对室内商业步行街排烟模式进行研究,设置无机械排烟、二级排烟和三级排烟三组工况,依据所需研究内容设置相应模拟监测点,用来监测中庭及环廊处的温度、能见度、CO和风速等影响人员疏散的关键指标。研究得出:在满足规范要求的排烟量以及设备正常联动的条件下,当火灾发生在房间走道时,相较于三级排烟模式,二级排烟模式,可以更好地抑制烟气在环廊中蔓延。但火灾发生在中庭时,两种排烟模式下烟气控制效果相近。同时,通过模拟,也可以验证,过余设计的环廊排烟,并不会对疏散造成不利影响。Indoor commercial pedestrian street not only brings good experience to consumers,but also has huge potential fire hazards.In case of fire,smoke,high temperature and other on-site conditions,it is very easy to cause major accidents of mass death and injury.This paper studies the smoke exhaust mode of indoor commercial pedestrian street through pyrosim simulation,sets three working conditions of no mechanical smoke exhaust,secondary smoke exhaust and tertiary smoke exhaust,and sets corresponding simulation monitoring points according to the required research contents to monitor the key indicators affecting personnel evacuation,such as temperature,visibility,CO and wind speed in atrium and corridor.The results show that under the conditions of meeting the standard smoke exhaust volume and normal linkage of equipment,the control effect of the three-level smoke exhaust mode is better than that of the two-level smoke exhaust mode in the environmental field of the ring corridor,and the control effect of the two smoke exhaust modes in the environmental field of the atrium is similar;At the same time,the simulation data also shows that the design of circular corridor smoke exhaust is conducive to personnel evacuation,which does not support the assumption that the excessive design of circular corridor smoke exhaust has an adverse impact on evacuation.

关 键 词：室内商业步行街 排烟模式 仿真模拟 烟气控制优化 

分 类 号：TU831[建筑科学—供热、供燃气、通风及空调工程]