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GROUND VIBRATION GENERATED BY A LOAD MOVING ALONG A RAILWAY TRACK

✍ Scribed by X. SHENG; C.J.C. JONES; M. PETYT

Publisher
Elsevier Science
Year
1999
Tongue
English
Weight
519 KB
Volume
228
Category
Article
ISSN
0022-460X

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✦ Synopsis

The propagation of vibration generated by a harmonic or a constant load moving along a layered beam resting on the layered half-space is investigated theoretically in this paper. The solution to this problem can be used to study the ground vibration generated by the motion of a train axle load on a railway track. In this application, the ground is modelled as a number of parallel viscoelastic layers overlying an elastic half-space or a rigid foundation. The track, including the rails, rail pad, sleepers and ballast, is modelled as an in"nite, layered beam structure. The modal nature of propagation in the ground for a chosen set of ground parameters is discussed and the results of the model are presented showing the characteristics of the vibration generated by a constant load and an oscillatory load at speeds below, near to, and above the lowest ground wave speed.

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