下承式钢管混凝土拱桥整体稳定性分析  

Analysis on Overall Stability of Through Concrete-filled Steel Tube Arch Bridge

作　　者：陈金龙 

机构地区：[1]湖南中大设计院有限公司,湖南长沙410075

出　　处：《城市道桥与防洪》2018年第9期115-117,125,共4页Urban Roads Bridges & Flood Control

摘　　要：结合常德市筑基路一桥的设计,采用有限元软件MIDAS/Civil建立空间有限元模型,对结构整体弹性稳定进行了分析,比较了不同的风撑设置方式对整体弹性稳定的影响。在此基础上,采用有限元软件ANSYS对结构进行了非线性稳定分析,分析中考虑了结构初始缺陷、几何非线性和材料非线性的影响。分析结果表明:通过合理的风撑设置桥梁整体稳定性能满足使用要求;结构的非线性因素对稳定性的影响较大。Combined with the design of Zhuji Road No.1 Bridge in Changde City, a spatial finite element model is established by using the finite element analysis software Midas/Civil. This model analyzes the overall elastic stability of structure and compares the influences of the different wind brace setting modes on the overall elastic stability. On this basis, the nonlinear stability analysis of the structure is carried out by using the finite element software ANSYS. The effects of structural initial imperfection, geometric nonlinearity and material nonlinearity are considered in the analysis. The analysis results show that the overall stability performance of the bridge can satisfy the operating requirements by the reasonable wind brace setting, and the nonlinear factors of the structure have great influence on the stability.

关 键 词：钢管混凝土拱桥 稳定性 非线性 横撑 

分 类 号：U448.22[建筑科学—桥梁与隧道工程]