曲塔混合梁斜拉桥的非线性稳定分析  

Nonlinear Stability Analysis of Curved Tower Cable-stayed Bridge of Hybrid Beam

作　　者：牟芸[1,2] 冯仲仁[2] 靳敏超[2] 

机构地区：[1]广东省长大公路工程有限公司,广州511431 [2]武汉理工大学土木工程与建筑学院,武汉430070

出　　处：《交通科技》2011年第1期7-10,共4页Transportation Science & Technology

摘　　要：介绍了曲塔混合梁斜拉桥的结构形式和稳定性分析方法。根据曲塔混合梁斜拉桥的受力特点,建立斜拉桥施工阶段几何非线性分析的有限元模型,完成了斜拉桥施工过程的仿真分析。在考虑了几何非线性和材料非线性效应的基础上,进行斜拉桥施工阶段和成桥状态的稳定性分析。结果表明,几何非线性对结构整体稳定性影响显著,在考虑几何非线性效应的基础上,材料非线性对稳定性的影响可忽略不计。The structural characters and stability analysis methods for curved tower cable-stayed bridge of hybrid beam are presented.The finite element model of cable-stayed bridge,by which simulation analysis of construction process can be carried out,is established.The finite element method is adapted to determining the stability of cable-stayed bridge in construction.Result indicates that the effect of the geometrical nonlinearity is great,but the influence due to material nonlinearity is usually negligible if geometrical nonlinearity has been taken into account.

关 键 词：混合梁 斜拉桥 非线性效应 稳定性 

分 类 号：U448.27[建筑科学—桥梁与隧道工程]