TY - CONF A1 - Auersch, Lutz ED - Papadrakakis, M. ED - Fragiadakis, M. ED - Plevris, V. T1 - High-speed railway tracks of a surface, bridge and tunnel line and some effects on the train-induced bridge and ground vibrations T2 - COMPDYN 2011 - 3rd International thematic conference - Computational methods in structural dynamics and earthquake engineering CY - Corfu, Greece DA - 2011-05-25 KW - Track compliance KW - Surface line KW - Bridge track KW - Tunnel track KW - Ground vibration KW - Layered soil KW - Bridge resonance KW - Train speed KW - Axle sequence KW - Track irregularities PY - 2011 SP - 1 EP - 17(?) AN - OPUS4-24555 LA - eng AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Auersch, Lutz ED - De Roeck, G. ED - Degrande, G. ED - Lombaert, G. ED - Müller, G. T1 - The dynamic force transfer of slab tracks and floating slab tracks and the corresponding ground vibration T2 - EURODYN 2011 - 8th International conference on structural dynamics CY - Leuven, Belgium DA - 2011-07-04 KW - Railway track KW - Slab track KW - Floating slab track KW - Track-soil interaction KW - Force transfer KW - Ground vibration PY - 2011 SN - 978-90-760-1931-4 SP - 820 EP - 827 AN - OPUS4-24556 LA - eng AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - 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 - CONF A1 - Auersch, Lutz T1 - Reducing ground-borne micro-vibrations by plate foundations T2 - ICOVP International Conference on Vibration Problems CY - Prague, Czech Republic DA - 2011-09-05 PY - 2011 AN - OPUS4-24760 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Auersch, Lutz T1 - High-speed railway tracks of a surface, bridge and tunnel line and some effects on train-induced bridge and ground vibrations. T2 - Conference on Computational Methods in Structural Dynamics and Earthquake Engineering (COMPDYN) CY - Corfu, Greece DA - 2011-05-25 PY - 2011 AN - OPUS4-24761 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Auersch, Lutz T1 - Rechenergebnisse zur Erschütterungsminderung der besohlten Schwelle T2 - RIVAS (Railway induced vibration abutment solutions) Meeting Subtask 3.2.1 CY - Berlin, Germany DA - 2011-11-03 PY - 2011 AN - OPUS4-24762 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Auersch, Lutz ED - Náprstek, J. ED - Horácek, J. ED - Okrouhlík, M. ED - Marvalová, B. ED - Verhulst, F. ED - Sawicki, J.T. T1 - Reducing ground-borne micro-vibrations by plate foundations T2 - Vibration problems ICOVP 2011 - 10th international conference on vibration problems CY - Prague, Czech Republic DA - 2011-09-05 KW - Plate-soil interaction KW - Wave excitation KW - Vibration reduction KW - Finite-element boundary-element method PY - 2011 SN - 978-94-007-2068-8 SN - 0930-8989 N1 - Serientitel: Springer proceedings in physics – Series title: Springer proceedings in physics VL - 139 SP - 329 EP - 335 PB - Springer AN - OPUS4-24804 LA - eng AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Auersch, Lutz A1 - Said, Samir ED - Zhai, W. ED - Takemiya, H. ED - De Roeck, G. ED - Tutumluer, E. T1 - Experimental soil parameters by different evaluation methods for impulsive, train and ambient excitation T2 - ISEV 2011 - 5th International symposium on environmental vibration - Advances in environmental vibration CY - Chengdu, China DA - 2011-10-20 KW - Wave velocity KW - Dispersion KW - SASW KW - MASW KW - SPAC KW - Damping PY - 2011 SN - 978-7-03-032373-6 SP - 3 EP - 9 PB - Science Press AN - OPUS4-24807 LA - eng AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - RPRT A1 - Auersch, Lutz T1 - Mitigation measures for ballasted tracks - sleepers, sleeper pads and substructure - Results from the finite element boundary element method N2 - The ground vibrations, which are generated by trains on different tracks, have been calculated by finite-element boundary-element models. The ballasted track is modelled in detail by the finite element method. The infinite soil is modelled by the boundary element method as a homogeneous or layered half-space. The track-soil system is coupled with a simple rigid mass model of the vehicle so that the vehicle-track interaction is completely included. Transfer functions are calculated in frequency domain without and with vehicle-track interaction, the compliance of the track and the mobilities of the soil at different distances from the track. Finally, the ratios between the ground vibration amplitudes with and without mitigation measure are calculated to quantify the effectiveness of the mitigation measure. Tracks with under sleeper pads have been investigated in a wide parameter study. The main parameters that influence the reduction of ground vibration are the stiffness of the under sleeper pad, the mass and the width of the sleeper. The softest sleeper pad yields the best reduction of the ground vibration. The influence of the sleeper mass is not as strong as the characteristic frequency is ruled by the mass of the sleeper and the mass of the wheelset as well. The influence of other parameters has been examined. The stiffness of the rail pads, the bending stiffness of the track, the stiffness of the ballast, the sub-soil, and the soil, and the layering of the soil. All these parameters show no or only a minor influence on the mitigation effect. As the standard isolated track, a track with an under sleeper pad of a stiffness of kS = 5 107 N/m has been chosen, which can also be expressed as a stiffness per area of kS ’’ = 7.4 107 N/m3 = 0.074 N/mm3. The resonance frequency for this pad stiffness is observed between 32 and 40 Hz. The reduction of the ground vibration is about vi,I /vi,U = 0.2 and 0.1 at 100 Hz. The reduction can be improved by softer sleeper pads. But the compliance of the track gets higher than tolerable. A possibility to use softer sleeper pads without increasing the static compliance of the track is their combination with wide sleepers. The softer sleeper pads under wider sleepers yield the same compliance of the track and a better reduction of the ground vibration. KW - Heavy sleeper KW - Under sleeper pad KW - Finite-element boundary-element method KW - Mitigation KW - Ground vibration KW - Ballasted track PY - 2011 SP - 1 EP - 81 PB - Bundesanstalt für Materialforschung und -prüfung (BAM) CY - Berlin AN - OPUS4-56607 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Auersch, Lutz T1 - The dynamic force transfer of slab tracks and floating slab tracks and the corresponding ground vibration. T2 - EURODYN 2011, 8th International Conference on Structural Dynamics CY - Leuven, Belgium DA - 2011-07-04 PY - 2011 AN - OPUS4-24137 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER -