预应力索—拱结构平面内极限承载力研究

An Analysis of Ultimate Load in the Plane of Prestressed Cable-Arch Structure

本文运用梁单元和索单元组成的混合有限元法对预应力索—拱结构平面内弹塑性极限承载力进行研究。利用牛顿—拉弗森法和弧长法对荷载—位移平衡路径进行跟踪研究,研究了索的预应力对结构极限承载力的影响,通过对这种新型结构的分析和研究,从中获得了对预应力索—拱结构设计有益的结论。

In this paper, based on natural characteristic of prestressed Cable-Arch structure, Ansys FEM program was used to simulate its geometrical nonlinear behavior with beam element and cable element. With Newton-Raphson and arc-length calculation method, this paper has made research on effect of prestress in cable. This work gives some reference for technical application of prestressed Cable-Arch structure.