摘要
基于三维线弹性大变形理论,构造了三维非线性虚拟层合单元法,利用此法对钢管混凝土压弯长柱的非线性屈曲承载力进行了研究,有限元分析结果与试验结果符合良好。最后,以典型截面形式为例,研究了长细比、偏心率等参数对钢管混凝土长柱承载力的影响,研究结果可供工程设计和施工参考。
Based on three-dimensional linear elastic large deformation theory, a three-dimensional nonlinear virtual laminate element is proposed. With the element, the nonlinear buckling bearing capacities of concrete filled steel tube columns with high slenderness ratio under eccentric load are evaluated. The test and calculating results are in good agreement. In addition, taking the typical cross-section forms as example, the effects of slenderness ratio and eccentricity ratio on the nonlinear buckling capacities of concrete filled steel tube columns are studied. The results are useful for engineering design and construction.
出处
《工程力学》
EI
CSCD
北大核心
2004年第6期131-137,共7页
Engineering Mechanics
