Title: Analysis on Environment and Building Vibration Induced by Passing Trains on Bridge Structures
Abstract: Based on train-bridge coupling dynamics and wave motion theories in engineering,three-dimensional finite-element analysis was used to analyze the dynamic characteristics of ground and building vibrations induced by passing trains on bridge structures.The finite-element mesh included moving trains,bridge superstructures,bridge foundations,soil and nearby buildings.A number of finite-element analyses were performed to investigate the propagation of vibration and vibration level in buildings.A wide variety of influence factors were used for this evaluation.The primary influence factors included the vibration source distance,train speed,and soil shear wave velocity.The results indicate as follows:The ground vertical vibration level decreases with increasing distance to vibration source;the ground lateral vibration level increases at first and then decreases similar to the ground vertical vibration;the vibration attenuation at low frequencies is smaller when compared with the attenuation at high frequencies;the predominant frequency of soil shifts to higher frequencies with increasing of train speeds;building vibration levels decrease with increasing of the distance to vibration source,but nonlinearly with the train speed and soil shear wave speed;the lateral vibration level of low buildings is dominated by the first modal shape,but the second and third modal shapes dominate for high-rise buildings.
Publication Year: 2013
Publication Date: 2013-01-01
Language: en
Type: article
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Cited By Count: 2
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