An extended analytical model including a layered
Konferensbidrag (offentliggjort, men ej förlagsutgivet), 2005

Ground vibrations are investigated with an analytical approach. The ground is modelled as a layered half-space on which a layered embankment is placed. Situated on top of the embankment, the sleepers are modelled with an anisotropic Kirchhoff plate and the rails as Euler-Bernoulli beams. In the equation for the rails, propagating wheel loads with constant velocity are accounted for. The analyzing method is based on Fourier transforms in time and along the space coordinate parallel with the track. In the transverse direction Fourier transforms are adopted in the ground, whereas Fourier cosine and Fourier sine series are used in the embankment layers. The numerical scheme is very efficient. In particular the beam-like rectangular elastic region (embankment) is compared with the Euler-Bernoulli beam, both supported on a layered ground. With the same bending stiffness, the two solutions are seen to differ already from 0 Hz.

ground vibrations

embankment

analytical model

railway

Författare

Anders Karlström

Dynamik

Anders E Boström

Dynamik

Environmental Vibrations, ISEV2005

303-310

Ämneskategorier

Teknisk mekanik

ISBN

0415390354

Mer information

Skapat

2017-10-06