文章摘要
何夕平,张地,陈冉.室外风对高层建筑主体施工期火灾烟雾 扩散影响分析[J].安徽建筑大学学报,2020,28(1):41-47
室外风对高层建筑主体施工期火灾烟雾 扩散影响分析
Regular Analysis on Fire Smoke Diffusion During Construction Period ofHigh-rise Building under Outdoor Wind
  
DOI:10.11921/j.issn.2095-8382.20200107
中文关键词: 施工期  高层建筑  主体结构  火灾  室外风  烟气蔓延
英文关键词: construction period  high-rise buildings  main structure  fire  Outdoor wind  Smoke spread
基金项目:国家重点研发计划(2016YFC0701702);安徽省科技攻关计划项目(1501041133);安徽省教育厅质量工程项目(2014gxk063)。
作者单位
何夕平 安徽建筑大学土木工程学院安徽合肥230601 
张地 安徽建筑大学土木工程学院安徽合肥230601 
陈冉 安徽建筑大学土木工程学院安徽合肥230601 
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中文摘要:
      为探究主体结构施工期高层建筑发生火灾时在不同风速与风向影响下,建筑物内部烟气的蔓延规律 及温度、速度和一氧化碳浓度变化,运用Pyrosim 火灾软件模拟分析不同工况下某高层住宅楼主体结构施工期 的火灾情形,结果分析得出,当某侧室外风风速越大时,着火源附近温度会随之降低,烟气蔓延速度会增加, 在楼梯间内的一氧化碳浓度会降低,风速影响会延缓竖井结构内烟气蔓延至顶层处的时间;对此高层住宅楼 工程,得出在西侧风影响下火源附近处烟气温度最高,而北侧室外风对楼梯间处烟气速度影响最明显。
英文摘要:
      In order to explore the influence of different wind speeds and wind directions on the fire of high-rise buildings during the construction period of the main structure,the spread of smoke inside the building and changes in temperature, speed,and carbon monoxide levels,Using Pyrosim fire software to simulate and analyze different fire situation of main structure of a high-rise residential building during construction period. The results shows that the greater outdoor wind speed,the temperature near the ignition source is reduced,the speed of smoke propagation will increase,and the concentration of carbon monoxide in the stairwell will decrease,The influence of wind speed will delay the time when the smoke in the shaft structure spreads to the top floor;Compare different fire situation show that the smoke temperature near the ignition source is the highest under the influence of the west side wind,the outdoor wind on the north side has the most obvious effect on the smoke velocity at the stairwell.
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