This paper aims to study the transfer laws of vibration signals in the free field near a high-speed train line by conducting a field test. The characteristics of ground vibration acceleration were analyzed in the time and frequency domains, and a prediction method in the frequency domain was proposed. The results show: (1) there is a vibration amplification area away from the bottom of the pier under the influence of high-speed trains running over the bridge due to the fluctuation attenuation of the vibration waves; (2) the dominant peak frequency points in the frequency spectrum of the acceleration can be regarded as the resonance frequency induced by periodic loading; and (3) the soil vibration can be effectively predicted by the proposed method with a strong capability to defend the interference of environmental vibrations according to the comparison between the predicted value and the experimental data.

中文翻译：

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高速列车过桥地面振动衰减及预测

本文旨在通过现场试验研究高速列车线路附近自由场中振动信号的传递规律。在时域和频域分析了地面振动加速度的特性，提出了一种频域预测方法。结果表明：（1）高速列车过桥作用下，由于振动波的波动衰减，离桥墩底部存在振动放大区；(2) 加速度频谱中的主要峰值频率点可以看作是周期性加载引起的共振频率；