基于Pyrosim的楼梯间火灾烟气数值模拟与分析  

Numerical Simulation and Analysis of Fire Smoke from Staircase Based on Pyrosim

作　　者：孙鹏 李娜 王瑞[2] 陈跃 SUN Peng;LI Na;WANG Rui;CHEN Yue(The Institute of Architectura Design and Research of Taiyuan University of Technology Co.,Ltd.,Taiyuan,Shanxi,030024,China;College of Civil Engineering,Taiyuan University of Technology,Taiyuan,Shanxi,030024,China)

机构地区：[1]太原理工大学建筑设计研究院有限公司,山西太原030024 [2]太原理工大学土木工程学院,山西太原030024

出　　处：《建材技术与应用》2024年第4期31-36,共6页Research and Application of Building Materials

摘　　要：为分析老旧高层住宅楼在火灾场景下烟气的发展过程,以某高层住宅建筑为研究背景,通过Pyrosim软件建立火灾仿真模型,分析火灾场景下烟气在楼梯间的蔓延规律并通过开启不同楼梯间高度的窗户分析其对烟气排放的效果,对比不同楼梯间高度开窗烟气排放仿真模拟结果。结果发现:在烟气充满整个楼梯间的条件下,7层楼梯间开窗180 s时可达到3层楼梯间清晰;27层楼梯间开窗180 s时可达到6层楼梯间清晰;7层和27层楼梯间同时开窗180 s时可达到7层楼梯间清晰;在楼梯间最高处开窗180 s时可达到8层楼梯间清晰。综合楼梯间开窗排烟效果可知,楼梯间最高处开窗>中和面上、下同时开窗>中和面以上开窗>中和面以下开窗。In order to analyze the smoke development process of old high-rise residential buildings under fire scenes,a fire simulation model was established by Pyrosim software based on the research background of a high-rise residential building,and the spread law of smoke in the stairwell under fire scenes was analyzed by opening windows of different stairwell heights.The simulation results of flue gas emission with windows opened at different stairwell heights were compared.The results showed that under the condition of smoke filling the entire staircase,the clarity of the third staircase can be achieved when the windows of the seventh staircase are opened for 180 s;When the windows of the 27th floor staircase are opened for 180 s,the clarity of the 6th floor staircase can be achieved;When the windows of the seventh and twenty-seventh floors of the staircase are opened simultaneously for 180 s,the clarity of the seventh floor staircase can be achieved;When the window is opened at the highest point of the staircase for 180 s,the clarity of the 8-story staircase can be achieved.The comprehensive comparison of the smoke exhaust effect of the stairwell window opening shows that the window opening at the highest level of the stairwell>simultaneously opening the window on the middle and lower surface>opening the window above the middle and lower surface>opening the window below the middle and lower surface.

关 键 词：高层住宅 Pyrosim 楼梯间 前室 烟气蔓延规律 

分 类 号：TU998.1[建筑科学—市政工程]