大型商业综合体火灾烟气及疏散模拟.docx

1、第42卷第4期2022年7月西西安安科科技技大大学学学学报报JOURNAL OF XIANUNIVERSITY OF SCIENCE AND TECHNOLOGYVol.42No.4July2022郑冠霞，杨漪，赵舒野，等.大型商业综合体火灾烟气及疏散模拟J.西安科技大学学报，2022,42(4):655-663.ZHENGGuanxia,YANGYi,ZHAO Shuye,etal.Simulationonfiresmoke and evacuation oflarge commercial complexJ.JournalofXian University of Science and T

2、echnology,2022,42(4):655-663.大型商业综合体火灾烟气及疏散模拟大型商业综合体火灾烟气及疏散模拟郑冠霞，杨漪，赵舒野，文虎(西安科技大学安全科学与工程学院，陕西西安710054)摘要：为探究大型商业综合体商铺发生火灾时烟气蔓延情况及人员疏散所需的安全时间，运用火灾动力学模拟软件 Pyrosim 和人员疏散模拟软件 Pathfinder 建立模型。火灾烟气模拟共设置首层服装商铺和4层电影院2个火灾场景，分析排烟系统有效、无效2种工况下大型商业综合体能见度、温度和CO 浓度随时间的变化情况。结果表明：对比同一场所不同工况的火灾，机械排烟能有效控制着火房间内的能见度、温度和

3、CO 浓度；对比同一工况不同场所的火灾，电影院的危险性大于服装商铺；若首层和4层发生火灾，人员分别需要893 s 和 8 8 1s 完成全员疏散；由于大型商业综合体广阔的中庭设计，烟气溢出着火房间后迅速扩散，仅着火房间内人员可用疏散时间均小于人员必需疏散时间，人员处于危险状态；若将人员必需疏散时间中的报警及响应时间缩短29.7s,所有工况下的人员都能完成疏散。研究成果可为大型商业综合体的火灾危险管控提供理论依据。关键词关键词：安全科学与工程；大型商业综合体；火灾；Pyrosim;Pathfinder中图分类号：中图分类号：X 932文献标志码：文献标志码：A A文章编号：文章编号：1672-9

4、315(2022)04-0655-09DOI:10.13800/ki.xakjdxxb.2022.0405开放科学开放科学(资源服务资源服务)标识标识码码(OSID):Simulation on fire smoke and evacuation oflargecommercialcomplexZHENG Guanxia,YANG Yi,ZHAO Shuye,WEN Hu(College ofSafety Science and Engineering,Xian Unirersity ofScience and Technology,Xian 710054,China)Abstract:The

5、firedynamicssoftware,Pyrosim,andevacuationsimulationsoftware,Pathfinder,wereused respectively to explore the situation of smoke spread and the required safety egress time in a largecommercial complex.A clothing store with a first floor and a cinema with four floors were selected asthe scenes of fire

6、 and smoke simulation.The change of the visibility and CO concentration with time ina success or failure of the mechanical smoke exhaust system was investigated in a large commercialcomplex.This results revealed that the success of the system can effectively increase the visibility anddecrease CO concentration.Furthermore,cinema exhibited a higher risk than clothing in the success ofthe system.In case of fire on the first floor and the fourth floor,893 s and 881 s are required to accom-plish