Mitigation Measures against Vibration for Ballasted Tracks – Optimisation of Sleepers, Sleeper Pads and the Substructure by Combined Finite-Element Boundary-Element Calculations

  • L. AuerschEmail author
  • W. Rücker
Part of the Notes on Numerical Fluid Mechanics and Multidisciplinary Design book series (NNFM, volume 126)


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 to 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 measures are calculated to quantify the effectiveness of the mitigation measures.

Tracks with under-sleeper pads have been investigated in a wide parameter study for the RIVAS project. 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 so strong, as the characteristic frequency is ruled by the mass of the sleeper and the mass of the wheelset as well.


Mitigation Measure Ground Vibration Axle Load Lower Resonance Frequency Slab Track 
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© Springer-Verlag Berlin Heidelberg 2015

Authors and Affiliations

  1. 1.BAM Federal Institute of Material Research and TestingBerlinGermany

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