反拱式钢管混凝土拱桥稳定性非线性分析  

The Stability Nonlinear Research of the Anti Arch Concrete-filled Steel Tube Arch Bridges

作　　者：曹孝柏[1] 

机构地区：[1]湖南城建职业技术学院,湖南湘潭411101

出　　处：《工程建设与设计》2010年第8期151-154,共4页Construction & Design for Engineering

摘　　要：结合湖北省兴山县高阳大桥,基于ANSYS软件,采用beam188单元,分别对施工和使用阶段进行线弹性、只考虑几何非线性和同时考虑几何及材料非线性对该桥进行稳定性分析,并得出了各工况下的稳定安全系数及失稳模态。计算结果表明,反拱式钢管混凝土拱桥的稳定性非线性因素明显,在计算中应充分考虑。This paper conducted linear elastic analysis of both construction period and service period for Gaoyang Bridge at Xingshan county in Hubei province.Finite element software ANSYSwas used and beam 188 was selected for simulation.In order to obtain stability safety index and instability modes,stability analysis were conducted,considering only geometrical nonlinearity,and both geometrical nonlinearity and material nonlinearity,respectively.The calculated results show that the stability nonlinear factors were sensible for anti arch concrete-filled steel tube arch bridge,so these factors should be considered in calculation.

关 键 词：反拱式钢管混凝土拱桥 非线性 有限元 稳定性 

分 类 号：U441[建筑科学—桥梁与隧道工程] U448.22[交通运输工程—道路与铁道工程]