Experimental study and analysis on the collapse behavior of an interior column in a steel structure under local fire
Experimental study and analysis on the collapse behavior of an interior column in a steel structure under local fire
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局部火灾下钢结构内柱倒塌行为试验研究与分析
DOI：
10.1177/1369433215624318
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发表时间：
2016-01
影响因子：
2.6
通讯作者：
Kim, Kang-Suk
中科院分区：
文献类型：
--
作者：
Chen, Shicai;Zhang, Yang;Yan, Weiming;Kim, Kang-Suk
本文描述了在两个中型钢框架上进行的试验和分析结果，以研究钢框架结构中受热内柱的倒塌行为以及火灾引起的结构倒塌机制。由于结构中的加热柱受到现实的非弹性端部约束（来自周围冷却结构的非弹性影响），而不是熔炉中的理想化柱，因此设计测试是为了研究非弹性端部约束和不同负载比的影响。第一层受火的内柱与测力轴承连接，该轴承是为测量受热柱中的轴向力而开发的。本文介绍了结构火灾行为的观察和分析结果，包括柱的温度分布、挠度和轴向力的发展以及柱的失效模式。结果表明，与弹性约束相比，实际非弹性端部约束对屈曲前阶段的柱行为影响不显着，但在屈曲后阶段则显着。采用分析模型来分析非弹性端部约束柱在火灾下的行为。理论与实验结果的对比表明，简化的分析模型可以用于预测火灾下钢框架结构内柱的倒塌行为。
This article describes the experimental and analytical results of tests on two medium-scale steel frames to investigate the collapse behavior of a heated interior column in steel-framed structures and the fire-induced collapse mechanism of the structures. Because the heated column in the structure was under realistic inelastic end constraints (inelastic effects from the surrounding cool structures) as opposed to an idealized column in a furnace, the tests were designed to investigate the effect of inelastic end constraints and different load ratios. The interior column subjected to fire in the first story was connected with a force-measuring bearing, which was developed to measure the axial force in the heated column. This article presents the observations and analysis results of structural fire behavior, including the temperature distribution of the column, the development of deflection and axial forces, and the column failure modes. The results show that the effect of realistic inelastic end constraint is not significant for the column behavior during the pre-buckling stage, compared with the elastic constraint, but it is significant during the post-buckling stage. An analytical model was adopted to analyze the behavior of the column with inelastic end constraint under fire. Comparison of the theoretical and experimental results shows that the simplified analytical model can be used to predict the collapse behavior of the interior column in steel-framed structures under fire.
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影响因子：
5.5
作者：
K. Tan;W. Toh;Zhan Huang;Guan-Hwee Phng
通讯作者：
K. Tan;W. Toh;Zhan Huang;Guan-Hwee Phng
影响因子：
4.1
作者：
K. Al-Jabri;I. Burgess;R. Plank
通讯作者：
K. Al-Jabri;I. Burgess;R. Plank
影响因子：
5.5
作者：
Ruirui Sun;Zhaohui Huang;I. Burgess
通讯作者：
Ruirui Sun;Zhaohui Huang;I. Burgess
影响因子：
5.5
作者：
Yong C. Wang
通讯作者：
Yong C. Wang
DOI：
--
发表时间：
1999-04
期刊：
The Structural engineer
影响因子：
--
作者：
C. Bailey;T. Lennon;D. Moore
通讯作者：
C. Bailey;T. Lennon;D. Moore