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A theoretical model for ground vibration from trains generated by vertical track irregularities

A theoretical model for ground vibration from trains generated by vertical track irregularities
A theoretical model for ground vibration from trains generated by vertical track irregularities
A model is developed for predicting ground vibrations due to vertical track irregularities. This model incorporates vehicles, a track and a layered ground, and uses the moving axle loads and the vertical rail irregularities as its inputs. Outputs include the dynamic wheel–rail forces and the displacement power spectra of the track and the ground surface. Results from this model are presented for a single-axle vehicle model and a British Mark 3 passenger coach running on different tracks (a ‘lighter ballasted track’, a ‘heavier ballasted track’ and a slab track) at different speeds (25, 60 and 83 m/s). Based on these results, the effects of track structure, vehicle speed and frequency range on the observed vibration levels are identified. The different roles of the moving axle loads and the roughness-induced dynamic loads are indicated, at different frequencies and for train speeds below and above the lowest ground wave speed.
0022-460X
937-965
Sheng, X.
1d5fc91c-24df-4515-9c3c-40dfbc903db3
Jones, C.J.C.
695ac86c-2915-420c-ac72-3a86f98d3301
Thompson, D.J.
bca37fd3-d692-4779-b663-5916b01edae5
Sheng, X.
1d5fc91c-24df-4515-9c3c-40dfbc903db3
Jones, C.J.C.
695ac86c-2915-420c-ac72-3a86f98d3301
Thompson, D.J.
bca37fd3-d692-4779-b663-5916b01edae5

Sheng, X., Jones, C.J.C. and Thompson, D.J. (2004) A theoretical model for ground vibration from trains generated by vertical track irregularities. Journal of Sound and Vibration, 272 (3-5), 937-965. (doi:10.1016/S0022-460X(03)00782-X).

Record type: Article

Abstract

A model is developed for predicting ground vibrations due to vertical track irregularities. This model incorporates vehicles, a track and a layered ground, and uses the moving axle loads and the vertical rail irregularities as its inputs. Outputs include the dynamic wheel–rail forces and the displacement power spectra of the track and the ground surface. Results from this model are presented for a single-axle vehicle model and a British Mark 3 passenger coach running on different tracks (a ‘lighter ballasted track’, a ‘heavier ballasted track’ and a slab track) at different speeds (25, 60 and 83 m/s). Based on these results, the effects of track structure, vehicle speed and frequency range on the observed vibration levels are identified. The different roles of the moving axle loads and the roughness-induced dynamic loads are indicated, at different frequencies and for train speeds below and above the lowest ground wave speed.

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Published date: 2004

Identifiers

Local EPrints ID: 28153
URI: http://eprints.soton.ac.uk/id/eprint/28153
ISSN: 0022-460X
PURE UUID: 44daf01e-fc7f-4203-90e3-c401e911eca3
ORCID for D.J. Thompson: ORCID iD orcid.org/0000-0002-7964-5906

Catalogue record

Date deposited: 28 Apr 2006
Last modified: 16 Mar 2024 02:54

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Contributors

Author: X. Sheng
Author: C.J.C. Jones
Author: D.J. Thompson ORCID iD

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