Multi-story Fire Analysis for High-Rise Buildings
Multi-story Fire Analysis for High-Rise Buildings
复制标题
高层建筑多层火灾分析
DOI：
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发表时间：
2007
期刊：
影响因子：
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通讯作者：
J. Torero
中科院分区：
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作者：
G. Rein;Xun Zhang;P. Williams;Ben Hume;A. Heise;A. Jowsey;B. Lane;J. Torero
这项工作提出了一种新的方法来确定现代建筑的设计火灾，超出了标称方法的适用范围。如何在建筑设计阶段对火灾环境进行表征是结构工程师面临的问题。这个问题是在复杂的高层建筑的背景下解决的，其中产生的火灾环境具有传统设计火灾中不一定考虑的独特特征。对火灾环境进行全面分析，以最大限度地提高对结构元素的挑战，以了解建筑物的特定火灾动力学。为了在工程上有价值，结果必须用简单的术语表示，而不丧失一般性。该方法结合了计算流体动力学和工程简化，如使用稳态温度和将火灾环境分为近场和远场。对完全分布的火灾和行进的火灾都进行了调查。将该方法应用于实际建筑，以说明该分析的重要性，并与标准结果进行比较。
This work proposes a novel methodology to determine the design fire of modern buildings that are outside the range of applicability of nominal methods. Structural engineers face the problem of how to characterize the fire environment to be used in the design stage of buildings. This question is addressed here in the context of complex high-rise buildings where the resulting fire environments pose unique features that are not necessarily accounted for in traditional design fires. A comprehensive analysis of the fire environment, with the objective of maximizing the challenge to the structural elements is proposed to understand the particular fire dynamics of the building. The results must be expressed in simple terms without loss of generality in order to be of valuable engineering use. The methodology combines computational fluid dynamics and engineering simplifications such as using steady-state temperatures and dividing the fire environment into near and far fields. Both, fully distributed fires and travelling fires are investigated. The methodology is applied to a real building to illustrate the importance of this analysis and the comparison with the results from the standards.