TY - JOUR A1 - Auersch, Lutz A1 - Maldonado, M. T1 - Interaction véhicule-voie-sol et vibrations dues aux trains - Modélisations et vérifications expérimentales N2 - Cet article présente plusieurs modèles numériques pour l’étude des phénomènes vibratoires lors du passage d’un train. Les modèles permettent d’estimer la propagation des ondes et les réceptances pour le sol et la voie. Le sol multicouche et le couplage voie-sol sont traités par une (double) intégration sur les nombres d’onde. Les raideurs dynamiques de la voie et du véhicule sont combinées et les forces d’excitation roue-rail dues aux irrégularités de la voie et des roues sont calculées. Ces forces d’excitation permettent de simuler les vibrations du sol lors du passage d’un train. Les modèles sont validés par comparaison avec des mesures sur deux sites, en France et en Allemagne. Les vibrations calculées correspondent bien aux vibrations mesurées. ---------------------------------------------------------------------------------------------------- This contribution presents models that are necessary to calculate the vibrations due to the passage of a train. The models allow to calculate the propagation of the waves and the receptances of the soil and the track. The layered soil and the coupling with the track are treated by a (double) integration in wavenumber domain. The dynamic stiffnesses of the track and vehicle are combined and the excitation forces due to the irregularities of the track and the wheel are calculated. Finally, these excitation forces are used to simulate the ground vibration of a passing train. All these models are validated by a number of different measurements at two sites in France and Germany. KW - Ondes du sol multicouche KW - Irrégularités et forces roue-rail KW - Wave propagation KW - Layered soil KW - Wheel-rail irregularities and forces PY - 2011 U6 - https://doi.org/10.3166/EJCM.20.257-280 SN - 1779-7179 VL - 20 IS - 5-6 SP - 257 EP - 280 PB - Hermès Science : Lavoisier CY - Paris AN - OPUS4-24557 LA - fra AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - JOUR A1 - Auersch, Lutz T1 - Wave propagation in the elastic half-space due to an interior load and its application to ground vibration problems and buildings on pile foundations N2 - A method is presented which allows to calculate the wave-field in a homogeneous or layered soil in case of a dynamic interior load. The wave propagation along the surface, the distribution of the response over the depth, the horizontal propagation at different depths and the vertical downward propagation are shown and compared with the simpler surface solution of the half-space and the interior solution of the full-space. The complete wave-field (Green's function) is applied to the dynamic behaviour of piles and pile groups by use of a boundary element formulation. The stiffness, damping and – typically for piles – mass of different groups of piles are presented. Different group effects occur for lines, circles, grids, parallels and crosses of piles, which can be regarded as oscillations around average values. Moreover, the piles and pile groups behave almost like a damper for most of the frequencies. A building on a pile group that is excited by ground vibration due to surface or interior loads shows a reduction of the wave-field due to kinematic and inertial soil–building interaction effects. The results presented lead to simplified descriptions of the wave-field due to interior loads and of the soil–pile–building interaction which can be used for the prediction of technically induced vibration. KW - Wave propagation KW - Interior load KW - Dynamic pile and pile group stiffness KW - Kinematic and inertial soil-pile-building KW - Interaction PY - 2010 U6 - https://doi.org/10.1016/j.soildyn.2010.04.003 SN - 0261-7277 SN - 0267-7261 VL - 30 IS - 10 SP - 925 EP - 936 PB - Elsevier Science CY - Amsterdam AN - OPUS4-21833 LA - eng AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER -