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 ›› 2021, Vol. 40 ›› Issue (9): 1297-1300.

• • 上一篇    下一篇

最大坡度位于出入口段的隧道火风压计算

谢 飞,董启伟,常默宁   

  1. 北京市市政工程设计研究总院有限公司,北京 100082
  • 出版日期:2021-09-15 发布日期:2021-09-15
  • 作者简介:谢 飞(1984-),男,北京人,北京市市政工程设计研究总院有限公司高级工程师,硕士,主要从事隧道通风与消防方面的研究工作,北京市海淀区西直门北大街32号3号楼市政总院大厦C座,100082。

Calculation of tunnel fire wind pressure with the maximum slope at the entrance and exit

XIE Fei, DONG Qi-wei, CHANG Mo-ning   

  1. Beijing General Municipal Engineering Design & Research Institute, Beijing 100082, China
  • Online:2021-09-15 Published:2021-09-15

摘要: 将火灾发生在隧道出入口位置时的烟气流动和燃烧室内部的BRE羽流溢出模型进行类比分析,并借鉴BRE羽流溢出模型中部分参数的计算方式,最终得到当隧道最大坡度位于隧道出入口段时,一种基于JTG/T D70/2-02-2014《公路隧道通风设计细则》的较为直接的火风压计算方式。通过实例分析,将理论计算结果与数值模拟结果相对比,发现二者比较接近。

关键词: BRE羽流溢出模型, 火风压, 理论计算

Abstract: In this study, the smoke flow at the entrance and exit of the tunnel and the BRE plume overflow model inside the combustion chamber are used for analogy analysis. By drawing on the calculation methods of some of its parameters, a set of direct fire wind pressure calculation methods based on J TG/TD 70/2-02-2014 Detailed Rules for the Design of Highway Tunnel Ventilation are obtained when the maximum slope section of the tunnel is located at the entrance and exit of the tunnel. Based on a certain project, the theoretical calculation results are compared with the numerical simulation results, and it is found that they are relatively close.

Key words: BRE plume overflow model, fire wind pressure, theoretical calculation