中国安全科学学报 ›› 2018, Vol. 28 ›› Issue (12): 52-57.doi: 10.16265/j.cnki.issn1003-3033.2018.12.009

• 安全工程技术科学 • 上一篇    下一篇

无风条件下火灾时建筑外立面烟羽流形态特征研究

雷晶晶1,2, 王妍1,2 副教授, 周汝**1,2 副教授, 蒋军成1,2 教授, 诸徳志1,3, 何嘉鹏2,4 教授   

  1. 1 南京工业大学 安全科学与工程学院,江苏 南京 210009
    2 南京工业大学 江苏省城市与工业安全重点实验室,江苏 南京 210009
    3 南京市消防局,江苏 南京 210009
    4 南京工业大学 城市建设学院,江苏 南京 210009
  • 收稿日期:2018-09-16 修回日期:2018-11-14 发布日期:2020-11-25
  • 通讯作者: ** 周 汝(1981—),男,江苏宜兴人,博士,副教授,主要从事防排烟方面的研究。E-mail:maxmuse_njtech@163.com。
  • 作者简介:雷晶晶 (1992—)女,河南洛阳人,硕士研究生,研究方向为高层建筑防排烟。E-mail:jingjing92lei@163.com。
  • 基金资助:
    国家自然科学基金青年科学基金资助(51408306);江苏省危险化学品本质安全与控制技术重点实验室开放课题项目(HCSC20130)。

Study on form of smoke plume at facade of building in fire under windless condition

LEI Jingjing1,2, WANG Yan1,2, ZHOU Ru1,2, JIANG Juncheng1,2, ZHU Dezhi1,3, HE Jiapeng2,4   

  1. 1 College of Safety Science and Engineering, Nanjing Tech University, Nanjing Jiangsu 210009, China
    2 Key Laboratory of Urban and Industrial Safety, Nanjing Tech University, Nanjing Jiangsu 210009, China
    3 Nanjing City Fire Department, Nanjing Jiangsu 210009, China
    4 College of Urban Construction, Nanjing Tech University, Nanjing Jiangsu 210009, China
  • Received:2018-09-16 Revised:2018-11-14 Published:2020-11-25

摘要: 为探究高层建筑火灾时着火房间烟气外溢对外壁面及上层房间造成的影响,根据相似原理搭建4∶1缩尺寸试验台,开展燃烧试验;在无风条件下,设定不同的窗户高宽比和火源功率,分析外壁面的烟羽流形态特征变化,以及烟羽流宽度的变化;探讨上层房间的温度及CO浓度变化。结果表明:窗口处的高宽比大于1和火源功率较小时,热烟气对外壁面的加热作用不明显,且对上层房间和相邻房间的影响较小;控制高宽比和火源功率能抑制烟气溢出所成的危害。

关键词: 烟溢流, 贴壁羽流, 高宽比, 火源功率, 羽流宽度

Abstract: In order to explore the impacts of the overflowing smoke of fire compartment on the building facade and the upper rooms, a 4∶1 experimental model was built based on similarity principle to carry out the combustion experiment. Different window aspect ratios and fire power values were set under windless condition. The law of morphological characteristics of overflowing smoke near the wall,and the change of overflowing smoke width were analyzed. The temperature and CO concentration in the upper room were discussed. The results show that when the aspect ratio of the window is greater than 1 and the fire power value is lower, the heating effect of the overflowing smoke near the wall is not obvious, and the impacts on upper compartments and adjacent compartments are smaller, and that controlling the aspect ratio and the fire power can restrain the harm caused by the overflowing smoke.

Key words: overflowing smoke, attached plume, aspect ratio, fire power, plume width

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