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首页> 外文期刊>Current Science: A Fortnightly Journal of Research >Dynamic soil-structure interaction effects on 3D integral railway bridge under high-speed moving loads
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Dynamic soil-structure interaction effects on 3D integral railway bridge under high-speed moving loads

机译：高速移动负荷下3D整体铁路桥梁动态土结构互动效应

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摘要

Here, we have studied a ballastless double-track five-span integral bridge subjected to China Railway High-speed train loading. Soil-structure interaction (SSI) is considered to assess the resonant response of each span of this bridge. Finite element method is used to analyse the 3D bridge model. Four soil conditions, viz. fixed base, hard soil, medium soil and soft soil are considered to examine the dynamic response of the bridge. For each soil condition and for all the spans, it is observed that the resonant speeds correspond to higher modal frequencies. This study reveals the occurrence of resonance phenomenon for all the spans of an integral bridge, suggesting the importance of moving load analysis. Finally, the vertical resonant responses of the central span of an integral bridge and a continuous bridge are compared.
机译：在这里，我们研究了一个禁止的双轨五跨度整体桥，经过中国铁路高速列车装载。 认为土结构相互作用（SSI）被认为评估该桥的每个跨度的共振响应。 有限元方法用于分析3D桥模型。 四种土壤条件，张。 确定固定底座，硬土，中土和软土，用于检查桥梁的动态响应。 对于每个土壤条件和所有跨度，观察到谐振速度对应于更高的模态频率。 本研究揭示了整体桥的所有跨度的共振现象的发生，这表明移动负荷分析的重要性。 最后，比较了整体桥梁和连续桥的中央跨度的垂直谐振响应。

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