恒定轴压力下材料特性对方钢管混凝土柱防火性能的影响

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。

Material Effect for Predicting the Fire Resistance of Concrete-Filled Square Steel Tube Column Under Constant Axial Load

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...