主管:中华人民共和国应急管理部
主办:应急管理部天津消防研究所
ISSN 1009-0029  CN 12-1311/TU

消防科学与技术 ›› 2020, Vol. 39 ›› Issue (5): 628-632.

• • 上一篇    下一篇

天井宽度及进深对火灾烟气运动的影响

陈龙飞1,袁满2,陈艳秋1   

  1. 1.西南交通大学 地球科学与环境工程学院,四川 成都 611756;2.应急管理部四川消防研究所,四川 成都 610036
  • 出版日期:2020-05-15 发布日期:2020-05-15
  • 通讯作者: 陈艳秋,女,西南交通大学地球科学与环境工程学院消防工程系讲师。
  • 作者简介:陈龙飞(1988-),男,福建泉州人,西南交通大学地球科学与环境工程学院消防工程系讲师,博士,主要从事建筑防火技术教学和研究,四川省成都市高新区西部园区,611756。
  • 基金资助:
    公安部消防局应用创新项目(2017XFCX17)

Influence of patio width and depth on smoke movement of fire

CHEN Long-fei1, YUAN Man2, CHEN Yan-qiu1   

  1. 1. Faculty of Geosciences and Environmental Engineering, Southwest Jiaotong University, Sichuan Chengdu 611756, China; 2. Sichuan Fire Research Institute of MEM, Sichuan Chengdu 610036, China
  • Online:2020-05-15 Published:2020-05-15

摘要: 采用FDS火灾数值模拟的方法,分析不同天井宽度及进深对带外廊开口天井建筑中天井底部与顶部压差、天井内温度及外廊CO浓度等参数的影响,研究高层住宅建筑开口天井宽度及进深对烟囱效应的影响。设定3种火源功率、4种开口天井宽度、4种开口天井进深,共计48组工况进行计算分析,研究发现,开口天井内由于侧面与外界连通,烟囱效应较弱,天井宽度和天井进深对烟囱效应没有明显影响。天井宽度和天井进深越大,天井内温度、外廊CO浓度均降低。

关键词: 开口天井, 外廊, 火灾烟气, 烟囱效应, FDS

Abstract: FDS fire numerical simulation method was used to analyze the influence of different width and depth of the patio on the pressure difference between the bottom and top of the patio, the temperature inside the patio and CO concentration in the corridor, to study the influence of the width and depth of the patio on the stack effect in high-rise residential buildings. Considering 3 kinds of fire source power, 4 kinds of open patio width and 4 kinds of open patio depth, 48 working conditions were set to carry out the analysis. It was found that the stack effect is weak due to the side connectivity in the open patio, and the width and depth of the patio have no obvious effect on the stack effect. The greater the width of the patio and the deeper the patio, the lower the temperature inside the patio and the CO concentration in the corridor.

Key words: open patio, outer corridor, fire smoke, stack effect, FDS