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Train loading effects in railway geotechnical engineering: ground response, analysis, measurement and interpretation

Train loading effects in railway geotechnical engineering: ground response, analysis, measurement and interpretation
Train loading effects in railway geotechnical engineering: ground response, analysis, measurement and interpretation
The engineered support system and the natural ground below a railway track are subjected to potentially many millions of cycles involving the application of moving loads. Thus dynamic, inertial and rate of loading effects, which can reasonably be neglected in many geotechnical applications, may need to be considered – along with the associated response of the geomaterials. Differences in the spacing of wheels along a train (e.g. between axles on the same bogie, and between bogies on the same or adjoining carriages) result in a spectrum of loading frequencies, rather than a single representative value. The dominant loading frequencies within the spectrum may vary with depth or distance from the track, and may be of differing importance in relation to different phenomena. All this has implications for the measurement and interpretation of data, and for the acceptability of simplifications made in testing and analysing the response of the ground and geotechnical structures. This paper summarises and discusses recent developments and thinking in these areas, in relation to the performance of ballasted railway track subjected to moving loads from trains travelling at a range of speeds.
2214-3912
1-12
Powrie, William
600c3f02-00f8-4486-ae4b-b4fc8ec77c3c
Le Pen, Louis
4a38e256-d113-4bba-b0d4-32d41995928a
Milne, David
6b321a45-c19a-4243-b562-517a69e5affc
Thompson, David
bca37fd3-d692-4779-b663-5916b01edae5
Powrie, William
600c3f02-00f8-4486-ae4b-b4fc8ec77c3c
Le Pen, Louis
4a38e256-d113-4bba-b0d4-32d41995928a
Milne, David
6b321a45-c19a-4243-b562-517a69e5affc
Thompson, David
bca37fd3-d692-4779-b663-5916b01edae5

Powrie, William, Le Pen, Louis, Milne, David and Thompson, David (2019) Train loading effects in railway geotechnical engineering: ground response, analysis, measurement and interpretation. Transportation Geotechnics, 21, 1-12, [100261]. (doi:10.1016/j.trgeo.2019.100261).

Record type: Article

Abstract

The engineered support system and the natural ground below a railway track are subjected to potentially many millions of cycles involving the application of moving loads. Thus dynamic, inertial and rate of loading effects, which can reasonably be neglected in many geotechnical applications, may need to be considered – along with the associated response of the geomaterials. Differences in the spacing of wheels along a train (e.g. between axles on the same bogie, and between bogies on the same or adjoining carriages) result in a spectrum of loading frequencies, rather than a single representative value. The dominant loading frequencies within the spectrum may vary with depth or distance from the track, and may be of differing importance in relation to different phenomena. All this has implications for the measurement and interpretation of data, and for the acceptability of simplifications made in testing and analysing the response of the ground and geotechnical structures. This paper summarises and discusses recent developments and thinking in these areas, in relation to the performance of ballasted railway track subjected to moving loads from trains travelling at a range of speeds.

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1-s2.0-S2214391219302065-main - Accepted Manuscript
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Accepted/In Press date: 14 July 2019
e-pub ahead of print date: 17 July 2019
Published date: December 2019

Identifiers

Local EPrints ID: 432943
URI: http://eprints.soton.ac.uk/id/eprint/432943
ISSN: 2214-3912
PURE UUID: d63bd471-d3c5-465f-b0f3-02d5a78f1b0d
ORCID for William Powrie: ORCID iD orcid.org/0000-0002-2271-0826
ORCID for Louis Le Pen: ORCID iD orcid.org/0000-0002-4362-3895
ORCID for David Milne: ORCID iD orcid.org/0000-0001-6702-3918
ORCID for David Thompson: ORCID iD orcid.org/0000-0002-7964-5906

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Date deposited: 01 Aug 2019 16:30
Last modified: 18 Feb 2021 17:33

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