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基于有限元计算方法,借助Ansys计算软件建立模型,采用两种不同方式的增大截面法对衡阳蒸水大桥加固前后的力学特性进行了研究,建立了平面有限元模型以分析运营期间静力特性的改善情况,建立了空间有限元模型以分析运营期间的动力特性的改善情况,并分析了不同的加固方式对结构力学特性的影响,通过力学特性的评估,提出了对于该桥相对有利的加固方法。
Based on the finite element method and Ansys calculation software, a model was established and the mechanical characteristics of Hengyang Shuizhong Bridge before and after reinforcement were studied by two different ways of increasing section. The finite element model was established to analyze the static characteristics The finite element model of space was established to analyze the improvement of dynamic characteristics during operation. The influence of different reinforcement methods on structural mechanics characteristics was analyzed. The relative advantageous reinforcement of the bridge was proposed through the evaluation of mechanical properties method.