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桥梁结构在各种荷载作用下产生的内力和弯矩影响着桥梁的性能.桥梁弯曲、扭转和挠度等过大时会导致结构的破坏,这在结构设计阶段就应加以分析.本文提出一种有限条简化分析方法,可以较好地分析桥梁的挠度、弯曲和扭转变形.通过对一座简支板梁桥模型的分析,与现行有限元方法的分析结果进行了比较.结果表明,本方法能够较好地处理边界条件,只需要很少的输入工作就可以得到正确的分析结果,从而为结构工程师提供了一种用于分析板梁桥在交通荷载作用下行为的有效工具.
The internal forces and bending moments of the bridge structure under various loads affect the performance of the bridge.The structural damage caused by excessive bending, torsion and deflection of the bridge should be analyzed during the structural design stage.This paper presents a Finite strip simplified analysis method can be used to analyze the deflection, bending and torsional deformation of bridge.By comparing the analysis results of a finite element method with the analysis of a simple supported beam-bridge model, the results show that this method can To deal with the boundary conditions well, the correct analysis results can be obtained with little input work, which provides the structural engineer with an effective tool for analyzing the behavior of the girder bridge under traffic loads.