索—拱杂交结构线性稳定性初探

本文应用有限单元法对索-拱杂交结构平面内线性稳定性研究。利用Lanczos向量的直接叠加法对索-拱杂交结构的特征值分析研究，考虑不同荷载、不同索拱截面比值、不同边界条件下索-拱杂交结构的线性稳定性分析，从中获得对索-拱杂交结构设计有参考价值的结论。

Primary Exploration of Linear Instability Behavior of Cable - Arch Structure

This paper presents a study of linear stability in plane of cable-arch structure by using finite element approach with beam and cable elements. The study of the structure value is calculated with Lanczos method. It is found that the cables affect significantly the structural behavior , including its limit load - carrying capacity. Furthermore, the effects of boundary condition and cable - arch ratio on the limit load - carrying capacity are also involved in the theoretical investigation. Some conclusions to the design of the cable - arch structures are drawn from the numerical results obtained in the study.