中国安全科学学报 ›› 2020, Vol. 30 ›› Issue (2): 35-40.doi: 10.16265/j.cnki.issn1003-3033.2020.02.006

• 安全工程技术 • 上一篇    下一篇

木结构吊脚楼火灾轰燃临界值预测研究

韦善阳 副教授, 石美, 杨欢, 孙威   

  1. 贵州大学 矿业学院,贵州 贵阳 550025
  • 收稿日期:2019-11-18 修回日期:2020-01-05 出版日期:2020-02-28 发布日期:2021-01-25
  • 作者简介:韦善阳(1983—),男,广西河池人,博士,副教授,主要从事消防安全科学与工程研究工作。E-mail:251748602@qq.com。
  • 基金资助:
    贵州省科技支撑计划项目资助(黔科合支撑[2019]2889号)。

Prediction of critical value of fire flashover in stilted buildings with timber structure

WEI Shanyang, SHI Mei, YANG Huan, SUN Wei   

  1. School of Mining, Guizhou University, Guiyang Guizhou 550025,China
  • Received:2019-11-18 Revised:2020-01-05 Online:2020-02-28 Published:2021-01-25

摘要: 为探究木结构吊脚楼受限空间内火灾发展过程中的轰燃临界现象,以贵州省某典型木结构吊脚楼为研究对象,利用突变理论结合数值模拟软件量化分析其受限空间内火灾发展过程中的轰燃临界值。结果表明:木结构吊脚楼建筑受限空间内火灾发展过程中的轰燃现象具有燕尾突变特征,得到的轰燃临界温度为951.5 K;利用数值模拟得到的轰燃临界温度为953.4 K,与前者相比具有较好的一致性。木结构吊脚楼受限空间火灾轰燃现象的发生与外界风速关联性不大。

关键词: 木结构吊脚楼, 轰燃, 临界值预测, 突变理论, 数值模拟

Abstract: In order to explore critical phenomenon of flashover during fire development process in restricted space of wooden stilted buildings, with a typical wooden stilted building in Guizhou province taken as an object, critical value of flashover was quantitatively analyzed by using mutation theory and numerical simulation software. The results show that flashover phenomenon of stilted buildings with timber structure features Swallowtail Catastrophe, and the critical temperature calculated by it is 951.5 K while that calculated by numerical simulation is 953.4 K, which is comparatively consistent with the former. It is also found that occurrence of flashover in confined space has little relation with external wind speed.

Key words: stilted buildings with timber structure, flashover, critical value forecasting, catastrophe theory, numerical simulation

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