Optimization of Vehicle-Induced Vibration and Structure-borne Noise of Bridge Based on Computing

Abstract—The structure-borne noise of the bridge is an environmental pollution in the city. In this paper, the vibration and sound radiation of the highway bridge are analyzed by numerical method, experimental verification is carried out, and the optimization measures are proposed. Firstly, the finite element method for the vibration of the hinged-beam bridge under the action of vehicle is proposed. Secondly, the boundary element method is used to calculate the acoustic radiation caused by the structural vibration of the bridge. Thirdly, the reliability of the above computational method is verified by the experiment on a practical bridge. Finally, the measures to control the vibration and noise of bridge are proposed, and the effects are evaluated numerically based on the current method. The results show that strengthening the lateral connection of beams in bridge and reducing the roughness of bridge deck are effective ways to decrease the structure-borne noise of bridge.