Vibration Analysis of Vehicle-Pavement-Bridge Interaction System Considering Coherent Road Roughness
In the vehicle-bridge interaction system,road roughness is one of the main excitations,which directly affects the vehicle dynamic response,pavement and bridge.However,in the existing vehicle-bridge interaction analysis,there are few studies considering the coherence of pavement and road roughness(the non-uniform road roughness of left and right wheels).In order to obtain a more realistic vehicle-bridge interaction analysis model,a three-dimensional vehicle-pavement-bridge interaction(VPBI)system finite element model was established.The viscoelastic properties of pavement were char-acterized by Prony series.The road roughness was constructed by the inverse Fourier transform meth-od.The coherence was introduced by the road roughness phase difference of the left and right wheels.The constraint coupling method was used to realize the vehicle displacement coordination,the road roughness and the pavement.The finite element model of the three-dimensional VPBI system was obtained,and the influence of the left and right wheels non-uniform road roughness and its coherence strength on the vehicle dynamic response,the pavement and the bridge was analyzed.The results show that the influence of coherent road roughness on the dynamic response of the system should be consid-ered when establishing a more realistic and refined three-dimensional VPBI calculation model.
万方数据
维普
