钢管混凝土拱桥空间稳定非线性分析

Nonlinear Analysis for Stability of Concrete-filled Steel Tubular Arch Bridge

文章采用有限元软件ANSYS建立了钢管混凝土拱桥的空间模型,计算了4种工况下的线弹性、几何非线性和双重非线性稳定安全系数,并根据计算结果,评价了桥梁的整体稳定性,分析结果为同类型桥梁的空间稳定分析提供参考。

The paper adopts the 3-D finite element program-ANSYS to establish the space model of Concrete-filled Steel Tubular Arch Bridge, and calculates the linear, the geometrical nonlinear and the double nonlinear buckling safety factors under thc four different work conditions, then the bridge＇s stabilities are evaluated according to the calculated results. The resuits provide a reference for design of similar project.