钢桁梁悬拼施工空间受力静力性能分析

Static performance space analysis of steel truss beam suspension construction

通过介绍钢析梁桥空间结构分析的计算原理,采用Midas Civil有限元软件,建立了跨大堤桥的三维有限元模型,进行桥梁结构的空间受力状态分析,重点分析了桥梁在各个荷载工况下各构件的应力与位移,给出了桥梁在悬臂施工的状态下各临时支墩的反力及钢才脊梁杆件下挠的挠度和应力状态。为钢椅梁桥的发展应用提供了理论支持。

By introducing the calculating principle of spatial structure analysis of steel truss bridge,using Midas Civil finite element software,this paper establishes a three-dimensional finite element model of the bridge across the embankment,carries out the analysis of the spatial stress state of the bridge structure,emphatically analyses the stress and displacement of each component of the bridge under various load conditions,and gives the reaction force of each temporary pier and the steei truss of the bridge under the cantilever construction state.Deflection and stress state of beam and member under deflection.It provides theoretical support for the development and application of steel truss bridge.