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A comparison of railway track foundation design methods

A comparison of railway track foundation design methods
A comparison of railway track foundation design methods
One of the primary functions of the layers that make up the trackbed in a conventional railway track system is to distribute wheel/rail contact forces so that the stresses in the subgrade are of an acceptable level. To ensure that the trackbed layers perform this task adequately, there are a number of design procedures that may be used to calculate an appropriate thickness of the layers. This paper describes and compares five such design procedures from the USA, UK, Europe, and Japan. The comparisons show that the design procedures give large differences in the calculated layer thicknesses which are due to the design methodologies used in each procedure. Consequently, to enable an appropriate design procedure to be adopted for a given set of conditions, it is necessary to have a thorough knowledge of the methodologies employed together with their inherent assumptions.

subgrade, ballast, sub-ballast, trackbed layers, granular material, design procedure, analytical design, material performance, resilient modulus
0954-4097
1-12
Bowness, D.
8f1df5c0-39a8-44ca-aad7-2c57869e6631
Burrow, M.P.N.
865da543-400f-4c75-b0f8-961d7dd0765b
Ghataora, G.S.
a7608723-f1b1-456a-af73-1c7c2bf69b4d
Bowness, D.
8f1df5c0-39a8-44ca-aad7-2c57869e6631
Burrow, M.P.N.
865da543-400f-4c75-b0f8-961d7dd0765b
Ghataora, G.S.
a7608723-f1b1-456a-af73-1c7c2bf69b4d

Bowness, D., Burrow, M.P.N. and Ghataora, G.S. (2007) A comparison of railway track foundation design methods. Proceedings of the Institution of Mechanical Engineers, Part F: Journal of Rail and Rapid Transit, 221 (1), 1-12. (doi:10.1243/09544097JRRT58).

Record type: Article

Abstract

One of the primary functions of the layers that make up the trackbed in a conventional railway track system is to distribute wheel/rail contact forces so that the stresses in the subgrade are of an acceptable level. To ensure that the trackbed layers perform this task adequately, there are a number of design procedures that may be used to calculate an appropriate thickness of the layers. This paper describes and compares five such design procedures from the USA, UK, Europe, and Japan. The comparisons show that the design procedures give large differences in the calculated layer thicknesses which are due to the design methodologies used in each procedure. Consequently, to enable an appropriate design procedure to be adopted for a given set of conditions, it is necessary to have a thorough knowledge of the methodologies employed together with their inherent assumptions.

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More information

Published date: 2007
Additional Information: Bowness D, Burrow M.P.N., Ghataora G.S., (2007). "A comparsion of railway track foundation design methods." Proceedings of the IMechE Part F: Journal of Rail and Rapid Transit (Special Issue on Rail Research UK), 221/F1, 1-12
Keywords: subgrade, ballast, sub-ballast, trackbed layers, granular material, design procedure, analytical design, material performance, resilient modulus

Identifiers

Local EPrints ID: 75909
URI: https://eprints.soton.ac.uk/id/eprint/75909
ISSN: 0954-4097
PURE UUID: 15c5ed0a-3aae-4a16-acfa-f9ee69d8dbec

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Date deposited: 11 Mar 2010
Last modified: 17 Jul 2019 00:15

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Contributors

Author: D. Bowness
Author: M.P.N. Burrow
Author: G.S. Ghataora

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