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Improving the performance of railway track through ballast interventions

Improving the performance of railway track through ballast interventions
Improving the performance of railway track through ballast interventions
Maintenance and eventual renewal of ballasted track constitute major operational costs for a railway network. Thus significant benefits would accrue from a more robust track design having a longer service life and reduced maintenance requirements. This paper presents results from a laboratory study exploring the potential to achieve this through improving the ballast grading and reducing the ballast shoulder slope. Cyclic loading tests were carried out on a section of track representing one sleeper bay in plane strain, in the Southampton Railway testing Facility (SRTF). A cyclic load representing a 20 tonne axle load was applied at 3Hz for at least 3 million cycles, during which measurements of permanent and resilient vertical deflection were made. Certain interventions are found to result in lower rates of permanent settlement and different resilient ranges of movement. Supplementary measurements to determine longitudinal pressure, ballast breakage and attrition, and shoulder slope movement were used to explore the mechanisms responsible for the observed improvements in ballast bed performance. It is concluded that the use of finer ballast gradings and a shallower shoulder slope have the potential to reduce maintenance requirements.
0954-4097
1-17
Abadi, Taufan
5e3abda7-80eb-4f39-921e-fae1f472d238
Le Pen, Louis
4a38e256-d113-4bba-b0d4-32d41995928a
Zervos, Antonios
9e60164e-af2c-4776-af7d-dfc9a454c46e
Powrie, William
600c3f02-00f8-4486-ae4b-b4fc8ec77c3c
Abadi, Taufan
5e3abda7-80eb-4f39-921e-fae1f472d238
Le Pen, Louis
4a38e256-d113-4bba-b0d4-32d41995928a
Zervos, Antonios
9e60164e-af2c-4776-af7d-dfc9a454c46e
Powrie, William
600c3f02-00f8-4486-ae4b-b4fc8ec77c3c

Abadi, Taufan, Le Pen, Louis and Zervos, Antonios et al. (2016) Improving the performance of railway track through ballast interventions. Proceedings of the Institution of Mechanical Engineers, Part F: Journal of Rail and Rapid Transit, 1-17. (doi:10.1177/0954409716671545).

Record type: Article

Abstract

Maintenance and eventual renewal of ballasted track constitute major operational costs for a railway network. Thus significant benefits would accrue from a more robust track design having a longer service life and reduced maintenance requirements. This paper presents results from a laboratory study exploring the potential to achieve this through improving the ballast grading and reducing the ballast shoulder slope. Cyclic loading tests were carried out on a section of track representing one sleeper bay in plane strain, in the Southampton Railway testing Facility (SRTF). A cyclic load representing a 20 tonne axle load was applied at 3Hz for at least 3 million cycles, during which measurements of permanent and resilient vertical deflection were made. Certain interventions are found to result in lower rates of permanent settlement and different resilient ranges of movement. Supplementary measurements to determine longitudinal pressure, ballast breakage and attrition, and shoulder slope movement were used to explore the mechanisms responsible for the observed improvements in ballast bed performance. It is concluded that the use of finer ballast gradings and a shallower shoulder slope have the potential to reduce maintenance requirements.

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Abadi_et_al_2016_nontypeset.pdf - Accepted Manuscript
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More information

Accepted/In Press date: 16 August 2016
e-pub ahead of print date: 5 October 2016
Organisations: Infrastructure Group

Identifiers

Local EPrints ID: 400699
URI: http://eprints.soton.ac.uk/id/eprint/400699
ISSN: 0954-4097
PURE UUID: 582d756b-af23-4e72-858b-dea30a49e67b
ORCID for Taufan Abadi: ORCID iD orcid.org/0000-0002-3640-5953
ORCID for Louis Le Pen: ORCID iD orcid.org/0000-0002-4362-3895
ORCID for Antonios Zervos: ORCID iD orcid.org/0000-0002-2662-9320
ORCID for William Powrie: ORCID iD orcid.org/0000-0002-2271-0826

Catalogue record

Date deposited: 23 Sep 2016 13:20
Last modified: 17 Dec 2019 06:37

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