Title: Ground-borne vibration due to static and dynamic axle loads of InterCity and high-speed trains
Authors: Lombaert, Geert ×
Degrande, Geert #
Issue Date: Jan-2009
Publisher: Academic press ltd elsevier science ltd
Series Title: Journal of sound and vibration vol:319 issue:3-5 pages:1036-1066
Abstract: In predictions of railway-induced vibrations, a distinction is generally made between the quasi-static and dynamic excitation. The quasi-static excitation is related to the static component of the axle loads. The dynamic excitation is due to dynamic train-track interaction, which is generated by a large number of excitation mechanisms, such as the spatial variation of the support stiffness and the wheel and track unevenness. In the present paper, the quasi-static excitation and the dynamic excitation due to random track unevenness are evaluated by means of numerical predictions. A solution strategy is presented that allows for the evaluation of the second-order statistics of the response due to dynamic excitation based on the power spectral density function of the track unevenness. Due to the motion of the train, the second-order statistics of the response at a fixed point in the free field are non-stationary and an appropriate solution procedure is required. The quasi-static and dynamic contribution to the track and free-field response are analysed for the case of InterCity and high-speed trains running at a subcritical train speed. It is shown how the train speed affects the quasi-static and dynamic contribution. Finally, results of numerical predictions for different train speeds are compared with field Measurements that have been performed at a site along the high-speed line L2 Brussels-Koln within the frame of homologation tests. (C) 2008 Elsevier Ltd. All rights reserved.
ISSN: 0022-460X
Publication status: published
KU Leuven publication type: IT
Appears in Collections:Department of Civil Engineering - miscellaneous
Structural Mechanics Section
× corresponding author
# (joint) last author

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