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在依据能量平衡原理建立的客运专线桥梁地震能量方程的基础上,考虑柔性地基效应和地震动特性的影响,利用大型有限元分析(FEA)软件ANSYS建立某客运专线双柱式桥墩的FEA模型。研究了考虑土-结构相互作用效应的客运专线桥梁进入非弹性状态后的地震能量响应以及各类能量在结构整体系统中的分配规律。分析结果表明:结构滞回耗能和阻尼耗能是客运专线桥梁消耗地震能量的主要方式,而土-结构相互作用和地震动峰值加速度(PGA)对客运专线桥梁的地震总输入能、滞回耗能、阻尼耗能有显著影响,不容忽视。
Based on the energy balance principle of the passenger dedicated railway bridge based on the seismic energy equation and taking into account the effects of the flexible foundation and the characteristics of ground motion, a FEA model of a double-column pier for passenger dedicated railway line is established by using the FEA software ANSYS. The seismic energy response of the bridge on passenger dedicated railway considering the soil-structure interaction effect and the distribution of energy in the overall system of the structure are studied. The results show that the structural hysteresis energy dissipation and damping energy dissipation are the main ways to dissipate seismic energy in the passenger dedicated line bridges. However, the total input energy, hysteresis of the bridge to the Passenger Dedicated Railway by the soil-structure interaction and the peak ground acceleration (PGA) Energy consumption, damping energy consumption have a significant impact, can not be ignored.