Research on fire location and law of fire spread of cylindrical three-dimensional underground garage

PENG Ting; YUAN Zhongyuan; YUAN Yanping; CAO Xiaoling

doi:10.11949/j.issn.0438-1157.20181513

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Research on fire location and law of fire spread of cylindrical three-dimensional underground garage

Process safety | 更新时间：2026-07-24

- Research on fire location and law of fire spread of cylindrical three-dimensional underground garage
- CIESC Journal Vol. 70, Issue 6, Pages: 2397-2408(2019)
- 作者机构：
  
  西南交通大学机械工程学院，四川成都 610031
- 作者简介：
- 基金信息：
- DOI：10.11949/j.issn.0438-1157.20181513
  CLC： TU 926
- Received：24 December 2018，
  
  Revised：2019-04-03，
  
  Online First：15 June 2020，
  
  Published：05 June 2019
- 稿件说明：
移动端阅览
彭婷, 袁中原, 袁艳平, 曹晓玲. 圆筒形地下立体停车库火灾火源位置与火势蔓延规律研究[J]. 化工学报, 2019, 70(6): 2397-2408

PENG Ting, YUAN Zhongyuan, YUAN Yanping, CAO Xiaoling. Research on fire location and law of fire spread of cylindrical three-dimensional underground garage[J]. CIESC Journal, 2019, 70(6): 2397-2408
彭婷, 袁中原, 袁艳平, 曹晓玲. 圆筒形地下立体停车库火灾火源位置与火势蔓延规律研究[J]. 化工学报, 2019, 70(6): 2397-2408 DOI： 10.11949/j.issn.0438-1157.20181513.

PENG Ting, YUAN Zhongyuan, YUAN Yanping, CAO Xiaoling. Research on fire location and law of fire spread of cylindrical three-dimensional underground garage[J]. CIESC Journal, 2019, 70(6): 2397-2408 DOI： 10.11949/j.issn.0438-1157.20181513.

摘要

选取一个典型的圆筒形地下立体停车库作为研究对象，运用star-ccm+软件，采用数值模拟的方法对车库内自然通风条件下的火灾场景进行模拟计算。分别选择负一层、负六层以及负十层作为起火点，计算得出：火源位置越深入地下，着火车位顶棚中心温度越高，最高可达942℃，与起火点同层的车位顶棚中心温度均高于200℃。当某车辆发生火灾后，其相邻车辆、上方车辆、相对车辆将分别在起火后的240、312、322 s左右被引燃；火源位置越往下，引燃附近车辆的时间越短。同时，通过计算值与理论值的对比，讨论了计算火源附近车辆被引燃时间理论公式的适用性。

Abstract

A typical cylindrical three-dimensional underground garage is selected as the object of this research. In the condition of the natural ventilation

star-ccm+ software was used to simulate the fire scene in the garage. The negative layer

the negative six layer and the negative ten layer are selected as the fire points respectively. It calculated out that

the deeper the fire source

the higher the center temperature of the roof. The temperature values are respectively 860

927 and 942℃. The center temperature of parking spaces on the same floor as the fire are all higher than 200℃. When a car get fired

its adjacent vehicles

upper vehicles and relative vehicles will be ignited at about 240

312 and 322 s. The deeper the fire source

the shorter the time it takes to ignite its nearby vehicles. At the same time

the calculated value is compared with the theoretical value. In this article

the theoretical formula for calculating the ignition time of vehicles near the fire source

is only applicable to conservative estimates of vehicles with the same level of fire and with no shelter between them. And it is not applicable to the calculation of the ignition time of upper and lower vehicles of the fire source. According to the calculation

this type of garage can not discharge heat rely on natural ventilation. It is necessary to exhaust smoke from the parking spaces in the same level as fire source

which are under greater impact

so as to control the development of the fire.

关键词

Keywords

references

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