摘要
高温下钢框架关键构件的判定对提高整体框架抗火能力有着重要的影响.本文基于常温下钢框架的受力分析,初步给出关键构件的判别准则,运用火灾科学和结构分析理论,采用有限元方法进一步分析钢框架关键构件在高温下的破坏机理,总结归纳出一种简便方法用于判别高温下钢框架的关键构件,为今后的钢框架抗火设计与研究提供参考.
The determination of steel frame key components produces significant impacts on the improvement of the overall frame fire resistance under high temperatures. Based on analysis of steel frame stress under normal atmospheric temperature, this paper presents the principles for judging key components. Moreover, the failure mechanism of key components of steel frame under high temperature are analyzed using fire science, structural analysis theory and finite element method. A simple and convenient method is proposed to judge key components of steel frames, which casts light on the design and research of steel frame’s resistance of fire.
出处
《南京工程学院学报（自然科学版）》
2016年第3期12-16,共5页
Journal of Nanjing Institute of Technology(Natural Science Edition)
基金
国家重点基础研究发展计划项目(2012CB719703)
安徽高校省级自然科学研究重大项目(KJ2014ZD06)
安徽省自然科学基金项目(1408085QE96)
关键词
钢框架
高温
关键构件
平均应力比
判定方法
steel frame
high temperature
key components
mean stress ratio
judgment method
