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首页> 外文期刊>Journal of Constructional Steel Research >Material effect for predicting the fire resistance of concrete-filled square steel tube column under constant axial load
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Material effect for predicting the fire resistance of concrete-filled square steel tube column under constant axial load

机译：恒定轴向载荷下预测方钢管混凝土柱耐火性的物质效应

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摘要

This paper presents a critical review of the performance of the currently available material models with regard to the mechanical behaviour of a concrete-filled steel tube (CFT) column at elevated temperatures. For this purpose, numerical heat transfer analysis and nonlinear thermal stress analysis were carried out by taking into account the existing material properties, such as the thermal and mechanical properties of concrete and steel. In addition, ten CFT column specimens with rectangular cross-sections of 300-350 mm in size were heated for two hours in accordance with KSF 2257 (equivalent to ASTM El 19 and JIS A 1304). On comparing the numerical analysis and experimental results, it can be observed that we can validate and employ the existing material models such as EUROCODE, AIJ CODE, Lie's material model, and Yin's material model.
机译：本文就高温下的钢管混凝土（CFT）柱的机械性能，对当前可用材料模型的性能进行了严格的评述。为此，考虑到现有的材料特性，例如混凝土和钢的热和机械特性，进行了数值传热分析和非线性热应力分析。另外，根据KSF 2257（相当于ASTM El 19和JIS A 1304），将十个具有300-350mm尺寸的矩形横截面的CFT柱样品加热两个小时。通过比较数值分析和实验结果，可以看出我们可以验证并采用现有的材料模型，例如EUROCODE，AIJ CODE，Lie的材料模型和Yin的材料模型。

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