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基于ABAQUS的钢筋混凝土框架火灾分析方法

Keywords: 钢筋混凝土框架,用户材料子程序,增量应力应变关系,火灾

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Abstract:

提出了利用梁单元进行钢筋混凝土框架结构火灾分析的方法.以ABAQUS为基础,通过编制高温下混凝土材料子程序和用户自定义场变量子程序,确定了钢筋混凝土梁柱截面混凝土和钢筋的温度,并进一步确定了高温下混凝土的增量应力应变关系.计算结果与ABQUS混凝土模型的对比表明本文方法合理.

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