作　　者： ; ;

机构地区： 佛山科学技术学院环境与土木建筑学院土木工程与建筑系

出　　处： 《佛山科学技术学院学报（自然科学版）》 2010年第5期57-60,共4页

摘　　要： 基于势能驻值原理,考虑剪力滞效应影响,推导了双轴对称截面开口薄壁拱结构在纯弯曲时非线性侧向屈曲问题的控制方程。通过样条函数配点法离散,得到结构屈曲问题的非线性刚度方程,并综合采用反幂法和迭代法求解,得到结构的屈曲临界荷载。通过与相关文献的解和Ansys的结果对比,说明了本文方法的可靠性。 Based on principles of stationary totalpotential energy,with the consideration of shear lag effect,the governing equation for the lateral buckling of thin-walled open-porfile arches when subjected to pure bending was derived.By means of discrete allocation of spline,the nonlinear stiffness equation of the nonlinear buckling was presented.Meanwhile,the critical load of such structure was calculated by adopting iteration and anti-power.Through the comparison of corresponding literature with the analysis,it is proved that the method used in this paper is reliable.

关 键 词： 拱结构 纯弯曲 非线性 屈曲 剪力滞

领　　域： [建筑科学] [交通运输工程]