方钢管-工字型钢骨混凝土偏压柱受力性能数值分析

Numerical Analysis on Mechanical Behavior of Square Steel Tube Columns Filled with Steel-Reinforced Concrete Subjected to Eccentric Loading

针对方钢管-工字型钢骨混凝土偏压柱的受力性能,利用有限元软件ANSYS,进行了非线性数值模拟,分析结果与试验数据吻合较好,证明所建立的三维有限元模型是有效的.利用该模型,分析了方钢管-工字型钢骨混凝土偏压柱的破坏形态及长细比、偏心距、方钢管壁厚、配骨指标等因素对构件受力性能的影响,为工程设计提供参考依据.

The nonlinear numerical simulation analysis was conducted to investigate the mechanical behaviors of square steel tube columns filled with steel-reinforced concrete under eccentric loading by ANSYS software and the calculated results were agreed well with the experimental ones. The results show that the finite element analysis model is effective. The failure mode of columns was analyzed using the model. Fur- thermore, mechanical behavior was studied corresponding to different parameters such as slenderness ratios, eccentric distance, thickness of steel pipe, index of steel reinforced, and the results provided some useful references for engineering design.