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A simplified calculation method on maximum smoke temperature under the ceiling in subway station fires

机译:地铁车站火灾中天花板下最高烟气温度的简化计算方法

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摘要

To assess the impact of smoke on the ceiling in subway stations, the maximum smoke temperature under the ceiling was studied theoretically and experimentally with two sets of small-scale experiments conducted. The results show that the maximum smoke temperature under the ceiling complies with the Alpert equation in which fire keeps distant from the walls in subway stations whereas fire adjacent to the end wall leads to the maximum smoke temperature under the ceiling decaying exponentially against the increased distance between the fire and the wall. In addition to the Alpert equation, a correlation determining the maximum smoke temperature is developed by taking the end wall effect into account. Consequently, a simplified calculation method involving the Alpert equation and the correlation is established. The method is applicable to practical fire engineering designs for subway stations.
机译:为了评估烟雾对地铁站顶棚的影响,我们通过两组小规模实验对顶棚下的最高烟温进行了理论和实验研究。结果表明,天花板下的最高烟气温度符合Alpert方程,在该方程中,火势与地铁站的墙壁保持距离,而端壁附近的火势导致天花板下的最高烟气温度随着距离的增加而呈指数衰减。火和墙。除了Alpert方程之外,还通过考虑端壁效应来建立确定最高烟气温度的相关性。因此,建立了一种包含Alpert方程和相关性的简化计算方法。该方法适用于地铁车站的实际消防工程设计。

著录项

  • 来源
    《Tunnelling and underground space technology》 |2011年第3期|p.490-496|共7页
  • 作者单位

    State Key Laboratory of Fire Science, University of Science and Technology of China, Hefei 230026, China,State Key Laboratory of Building Safety and Built Environment, Beijing 100013, China;

    School of Chemical Engineering, Zhengzhou University, Zhengzhou 450001, China;

    State Key Laboratory of Fire Science, University of Science and Technology of China, Hefei 230026, China,Department of Civil and Natural Resources Engineering, University of Canterbury, Christchurch 8140, New Zealand;

    State Key Laboratory of Fire Science, University of Science and Technology of China, Hefei 230026, China;

    State Key Laboratory of Fire Science, University of Science and Technology of China, Hefei 230026, China;

    State Key Laboratory of Fire Science, University of Science and Technology of China, Hefei 230026, China;

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  • 原文格式 PDF
  • 正文语种 eng
  • 中图分类
  • 关键词

    subway; station; ceiling jet; temperature; fire; smoke;

    机译:地铁;站;天花板射流温度;火;抽烟;

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