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本文根据现行铁路工程抗震设计规范的要求,采用有限元程序SAP2000对新墙河大桥主跨结构进行反应谱分析,并详细的介绍了动力模型的建立、反应谱参数的选取以及结果的计算过程,为类似桥梁结构的抗震分析提供了参照依据。
According to the requirements of the code for aseismic design of railway engineering, the finite element program SAP2000 is used to analyze the response spectrum of the main span structure of Xintihe River Bridge. The establishment of dynamic model, the selection of response spectrum parameters and the calculation process are introduced in detail. It provides a reference for the seismic analysis of similar bridge structures.