Railway traffic undoubtedly represents one of major sources of vibration. Within the Environmental Impact Assessment (EIA) procedures, quantitative and qualitative evaluation of vibration level is needed. In the present paper a vibration level prediction model for a railway superstructure on an embankment has been developed. The generation of vibration due to the dynamic interaction between the wheel and the railway superstructures is modelled assuming a lumped mass parameter model describing the railway superstructure and an excitation due to a spatial Power Spectral Density (PSD) function of rail profile defects, whereas the propagation of vibrations through the underlying soil is modelled by means of a Finite Element (FE) model. This model, that has been also validated through field test, can be effectively used to study construction solutions, within railway superstructure, aimed at mitigating vibration annoyance.
DEVELOPMENT AND EXPERIMENTAL VALIDATION OF A PREDICTION MODEL TO ASSESS RAILWAY TRAFFIC INDUCED VIBRATIONS
D'APUZZO, Mauro;
2003-01-01
Abstract
Railway traffic undoubtedly represents one of major sources of vibration. Within the Environmental Impact Assessment (EIA) procedures, quantitative and qualitative evaluation of vibration level is needed. In the present paper a vibration level prediction model for a railway superstructure on an embankment has been developed. The generation of vibration due to the dynamic interaction between the wheel and the railway superstructures is modelled assuming a lumped mass parameter model describing the railway superstructure and an excitation due to a spatial Power Spectral Density (PSD) function of rail profile defects, whereas the propagation of vibrations through the underlying soil is modelled by means of a Finite Element (FE) model. This model, that has been also validated through field test, can be effectively used to study construction solutions, within railway superstructure, aimed at mitigating vibration annoyance.I documenti in IRIS sono protetti da copyright e tutti i diritti sono riservati, salvo diversa indicazione.
