Post-earthquake fire resistance of tall steel concentrically braced frames

IF 16.4 1区化学 Q1 CHEMISTRY, MULTIDISCIPLINARY

Accounts of Chemical Research Pub Date : 2021-07-01 DOI:10.12989/EAS.2021.21.1.011

Rasul Kaffasha, A. Karamodin

引用次数: 0

Abstract

The fire which occurs after an earthquake causes great problems for buildings situated in moderate to high seismic regions. In this article in order to have an understanding regarding the impacts of post-earthquake fire on the structures, implementing the finite element method, the behaviour of tall steel concentrically braced frames when subjected to this type of loading was investigated. The simulation under seismic loading was done using the nonlinear time history analysis. Assuming the post-earthquake situation of the structure as the initial condition, the mechanical-thermal analysis was applied using the temperature-time diagram on the exposed elements. The analysis results showed that regardless of the earthquake record and fire scenarios for the tall steel concentrically braced frames, the fire resistance duration was short and the impacts of the previous earthquake on the structure fire resistance were not considerable.

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高层同心支撑钢框架的震后耐火性能

地震后发生的火灾给位于中高地震区的建筑物带来了很大的问题。为了了解地震后火灾对结构的影响，本文采用有限元方法，研究了高钢同心支撑框架在这种荷载作用下的性能。采用非线性时程分析方法对地震荷载作用下的地震反应进行了模拟。假设结构的地震后情况为初始条件，使用暴露元件的温度-时间图进行机械热分析。分析结果表明，无论地震记录和火灾场景如何，高层钢同心支撑框架的耐火持续时间较短，前一次地震对结构耐火性的影响不大。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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来源期刊

Accounts of Chemical Research 化学-化学综合

CiteScore

31.40

自引率

1.10%

发文量

312

审稿时长

2 months

期刊介绍： Accounts of Chemical Research presents short, concise and critical articles offering easy-to-read overviews of basic research and applications in all areas of chemistry and biochemistry. These short reviews focus on research from the author’s own laboratory and are designed to teach the reader about a research project. In addition, Accounts of Chemical Research publishes commentaries that give an informed opinion on a current research problem. Special Issues online are devoted to a single topic of unusual activity and significance. Accounts of Chemical Research replaces the traditional article abstract with an article "Conspectus." These entries synopsize the research affording the reader a closer look at the content and significance of an article. Through this provision of a more detailed description of the article contents, the Conspectus enhances the article's discoverability by search engines and the exposure for the research.