A numerical method is developed to analyze the low-frequency noise of bridge under vehicle load. It is divided into two sections: (1) the analysis of vehicle-bridge interaction system based on finite element method (FEM), when the bridge is modeled by shell element and vehicle is modeled by a theoretical model with four degrees of freedom; (2) the numerical method to predict the low-frequency noise caused by bridge vibration, when the sound pressure is derived using the theory of acoustics and Fast Fourier Transform (FFT) technology. As an example, the low-frequency noise of a practical bridge is investigated. The numerical results are compared with the measured data in experiments, which indicate the validity of the current method. Finally, the influence of road surface roughness is discussed.
A Numerical Method for Analyzing the Low-Frequency Noise of Bridge under Vehicle Load
Second International Conference on Transportation Engineering ; 2009 ; Southwest Jiaotong University, Chengdu, China
2009-07-29
Aufsatz (Konferenz)
Elektronische Ressource
Englisch
Highways and roads , Information technology (IT) , Transportation management , Construction , Freight transportation , Load factors , Vehicles , Water transportation , Air transportation , Rail transportation , Bridges , Noise pollution , Numerical analysis , Optimization , Public transportation , Traffic management
A Numerical Method for Analyzing the Low-Frequency Noise of Bridge under Vehicle Load
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