The train operations on railways will inevitably induce cross-railway bridge vibrations, and it is necessary to examine the effects of train-induced vibrations on the cross-railway vehicle-bridge coupling system. In this context, this study focuses on a practical low-pylon cable-stayed bridge to analyze the behavior of the vehicle-bridge coupling system under train passage. By employing theoretical analysis, vibration experiments, and numerical simulations, a comprehensive study is conducted to analyze the vibration response of the vehicle-bridge coupling system under train-induced vibrations. The results demonstrate that vertical vibration acceleration levels at different measurement points on the bridge deck are significantly more pronounced than the horizontal vibration levels. Train passage conditions beneath the bridge exert a noteworthy influence on the vibration acceleration levels and the frequency distribution range of the bridge and vehicle. The train speed, axle load, and driving direction each have varying degrees of impact on the vibration displacement and acceleration of the vehicle-bridge coupling system, emphasizing the importance of considering these factors.
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