【摘要】 研究了具有初弯曲的轴心受压构件的屈曲极限荷载问题.通过对Shanley理论模型的改进,引入初始弯曲幅值,并考虑非常量的切线模量(暂不考虑残余应力的影响),推导了不完整轴心受压构件作用荷载与挠曲变形的函数关系.通过编程,求解得出数值算例的极值荷载,即为不完整轴心受压构件的屈曲荷载.该研究的基础是改进了的基于分叉的屈曲荷载方法,是Shanley理论模型在不完整结构分析中的应用和推广,为进一步开展不完整结构的可靠性分析提供了参考.更多还原

【Abstract】 In this paper,the problem of buckling ultimate load of center compressive member with initial bending is researched,and the functional relation between load N and deformation δ by revised Shanley theory model is derived,leading initial bending exetnsion,and nonconstant tangential modulus is considered.Here the influence of residual stress is meglected.The ultimate load N,which is got by programming,is buckling load method of imperfect center compressive member.The research of this paper is based on the revised method of bifurcation buckling load,and it can be application or expansion of Shanley model in the analysis of imperfect structure.The work of this paper can give a reference for further reliability analysis of imperfect structure.更多还原