Reduction of Train-Induced Vibrations—Calculations of Different Railway Lines and Mitigation Measures in the Transmission Path

The reduction of train-induced ground vibrations by different railway lines and mitigation measures in the propagation path is analysed a unified approach two-dimensional finite element calculations where expressed as amplitude ratio between specific reference situation (the surface track without measure). In general, there no at low frequencies, becomes stronger with increasing frequency. A maximum 0.1 high frequencies established an open trench. Reduction ratios 0.7 0.2 have been found for other situations, filled trenches, walls, plates, blocks, well on embankment, cuts tunnel. Bridges can produce amplifications due to their resonance but also strong reductions massive bridge piers. influence some parameters has analysed, length span, inclination embankment cut, stiffness soil tunnel structure. dynamic stiffnesses surface, calculated 3D finite-element boundary-element method comparison corresponding measurements.