摘要
本文按极值失稳问题,考虑几何非线性和材料非线性的影响,对斜拉桥面内整体失稳分析方法进行了研究。推导出考虑两种非线性影响的压弯杆单元刚度矩阵,建立了结构失稳判别准则,采用基于有限元理论的数值分析方法。最后,用此法对一座斜拉桥进行计算,计算结果说明所介绍的分析方法是合理可用的。
This paper presents an analysis on cable-stayed bridges on global in-plane instability taking account of both geometric and material nonlinearities. This problem is here considered as one of limit-load instability. A numerical procedure based on finite element method is developed. Finally, an illustrative numerical example is presented to demonstrate the validity and applicability of the procedure.
出处
《铁道学报》
EI
CAS
CSCD
北大核心
1993年第4期74-79,共6页
Journal of the China Railway Society
关键词
极值失稳
斜拉桥
稳定性
geometric nonlinearity, material nonlinearity, limit-load instability
