几何非线性对大跨斜拉桥稳定性的影响

Influences of the Geometric Nonlinear on the Stablity of Long-span Cable-stayed Bridges

针对主跨460 m的预应力钢筋砼斜拉桥—重庆奉节长江大桥,运用有限元系统ANSYS分析施工及成桥状态下,线性和非线性因素对整体稳定性的影响,并根据ANSYS计算所得参数对大桥稳定性进行评价.

Based on the Chongqing Fengjie Yangtze River Bridge with span of 460m, the influences of Geometry linear and nonlinear on the stability of long-span cable-stayed bridge was analysed in the construction stage and the service stage. The stability of the bridge was evaluated with calculating results from software ANSYS.