中国安全科学学报 ›› 2021, Vol. 31 ›› Issue (10): 76-81.doi: 10.16265/j.cnki.issn1003-3033.2021.10.011

• 安全工程技术 • 上一篇    下一篇

外墙保温系统垂直壁面温度及火焰蔓延计算式*

周彪 讲师, 王凯** 教授, 孙绪坤, 柯巍, 张权   

  1. 中国矿业大学(北京) 应急管理与安全工程学院,北京 100083
  • 收稿日期:2021-06-14 修回日期:2021-07-28 出版日期:2021-10-28 发布日期:2022-04-28
  • 通讯作者: ** 王 凯(1972—),男,河南遂平人,博士,教育部长江学者特聘教授,主要从事安全工程、安全与应急管理等方面的研究。E-mail: wkcumt@126.com。
  • 作者简介:周 彪 (1986—),男,山西文水人,工学博士,讲师,主要从事新型含氟灭火剂的开发与评价、新型灭火技术的开发与应用等方面的研究。E-mail: zhoubiao1088@cumtb.edu.cn。
  • 基金资助:
    中央高校基本科研业务费(2020XJAQ03);国家自然科学基金资助(51904311)。

ETICS vertical temperature distribution and fire spread calculation

ZHOU Biao, WANG Kai, SUN Xukun, KE Wei, ZHANG Quan   

  1. College of Emergency Management and Safety Engineering-Beijing, China University of Mining and Technology-Beijing, Beijing 100083, China
  • Received:2021-06-14 Revised:2021-07-28 Online:2021-10-28 Published:2022-04-28

摘要: 窗口火溢流是引发建筑外墙保温系统(ETICS)火灾的主要原因之一。在讨论分析开口因子和差异化中性轴对Yokoi计算式影响的基础上,探究不同火焰功率和开口尺寸条件下的垂直壁面温度分布特征;然后通过一系列试验测定不同火焰功率和聚苯乙烯泡沫板(EPS)厚度下的火焰垂直蔓延速度,测量不同火焰功率和EPS密度下样品表面温度和内部EPS烧损面积,提出基于INDEX法的ETICS火灾危险指数计算法。结果表明:垂直壁面温度计算式结果与试验结果具有良好的一致性;火焰蔓延计算式与试验测试结果吻合;INDEX法可以有效区分ETICS火灾危险性。

关键词: 外墙保温系统(ETICS), 火溢流, 壁面温度, 火焰垂直蔓延, 火灾危险指数

Abstract: Overflow of window fire is one of the main reasons for ETICS fires. In this study, on the basis of discussing and analyzing influence of opening dimension and differential neutral axis on Yokoi calculation, distribution characteristics of vertical wall temperature under different flame power and opening size were explored. Then, through a series of tests, vertical spreading velocity of flame for different flame power and thickness of polystyrene foam board (EPS) were measured, and surface temperature and internal EPS burn area for different flame intensity and EPS density were attained. Finally, an ETICS fire risk index calculation method based on INDEX was developed. The results show that the calculated results of vertical wall temperature are in good agreement with experimental results, so are the results of flame spread. INDEX method can effectively clarify ETICS fire risk.

Key words: external thermal insulation composite systems (ETICS), window fire overflow, wall temperature, vertical fire propagation, fire risk index

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