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介绍了温度升高时钢管混凝土柱力学性能的材料模型的性能。因此,采用了热传递数值分析和非线性热应力分析,其中考虑到现有的材料特性如混凝土和钢筋的热学及力学特性。此外,对10个300~350mm矩形横截面的钢管混凝土柱构件,根据KSF2257(等同于ASTME119和JISA1304)加热2h,将数值分析与试验结果相对比可知,现有的材料模型如Eurocode,AIJ,Lie’s材料模型和Yin’s材料模型都可以有效用于此分析。
The performance of the material model for the mechanical properties of concrete-filled steel tubular columns at elevated temperatures is presented. Therefore, heat transfer numerical analysis and nonlinear thermal stress analysis are used, taking into account existing material properties such as the thermal and mechanical properties of concrete and steel bars. In addition, 10 steel-concrete column members with rectangular cross-sections of 300-350 mm are heated according to KSF2257 (equivalent to ASTM E119 and JIS A1304) for 2 hours. The comparison between numerical analysis and test results shows that the existing material models are Eurocode, AIJ, and Lie’s. Both the material model and the Yin’s material model can be effectively used for this analysis.