大跨度宽桥面结合梁斜拉桥主梁稳定性分析

On stability analysis of main beam of composite beam and cable-stayed bridge of large-span broad bridge surface

以重庆江津观音岩长江大桥为例,分析了钢—混凝土结合梁主梁的稳定性问题,计算了设计荷载组合下梁段弹性稳定系数和自定义荷载作用下梁段弹性稳定临界力,为该桥的设计提供了理论依据。

Taking Guanyinyan Yangtze River Bridge at Jiangjin of Chongqing as the example,the paper analyzes the stability issue of the steel-concrete composite beam and main beam,calculates the elastic stability coefficient of the under-beam section of the design for the loading combination and the elastic and stable critical force under the effect of the self-defined loading,so as to provide the theory reference for the design of the bridge.