论文部分内容阅读
本文将局部屈曲的薄壁构件等效成由若干个局部屈曲的波段在局部屈曲节平面处连接而成的梁柱构件。首先分析该波段(或短柱段)局部屈曲后的弹塑性M-P-Φ曲线,进而应用有限积分法求解薄壁构件的极限承载能力。这一处理方法,使得薄壁构件局部与整体稳定相关作用这一难度较大的问题得到了很好的解决,并且具有较高的精度。
In this paper, the locally buckling thin-walled member is equivalent to a beam-column member connected by several local buckling bands at the local buckling joint plane. Firstly, the elasto-plastic M-P-Φ curve after the local buckling of the band (or short column) is analyzed, and then the finite-integration method is used to solve the ultimate bearing capacity of thin-walled members. This treatment method makes it difficult to solve the problem that the localization of the thin-walled part is related to the overall stability, and it has a high accuracy.