方钢管混凝土柱局部屈曲有限元分析

Finite element analysis on partial flexure of square steel pipe and concrete column

主要分析了在偏心荷载作用下,方形钢管混凝土柱局部临界失稳应力cσr的变化情况,并采用ANSYS有限元软件对其进行了模拟分析,得出有限元分析结果与计算结果有一定偏差,但随着应力梯度系数φ的增加,局部临界屈曲应力σcr都呈现出减少的趋势。

It mainly analyzes the variation situation of the partial critical buckling stress σcr of square steel pipe and concrete column under the effect of non-central load,and a simulated analysis is done to it applying ANSYS finite element software,concludes that there is certain deviation between the result of finite element analysis and the calculation result,but the partial critical flexural stress σcr trend to decrease as the increase of stress gradient coefficient φ.