Suitability of empirical equations for estimating permanent settlement of railway foundation materials subjected to cyclic loading with principal stress rotation
Suitability of empirical equations for estimating permanent settlement of railway foundation materials subjected to cyclic loading with principal stress rotation
This paper uses the results of a series of laboratory tests with cyclic principal stress rotation to assess the suitability of a number of empirical equations for estimating the development of plastic settlements in railway track foundations. The laboratory tests were carried out on three sand–clay mixes representative of railway track foundation materials, in both free-to-drain and undrained conditions. The results of a non-linear regression analysis demonstrate that the drainage conditions are the key factor affecting the estimation accuracy of the models, with the clay content playing a secondary role. The correlation coefficient was generally higher in free-to-drain than in undrained conditions and reduced slightly with increasing clay content.
Axial strain, Cyclic stability, Cyclic tests, Empirical models, Principal stress rotation, Resilient stiffness
1603-1610
Mamou, Anna
1b427024-f9e6-4c79-862c-60fe6fba3a34
Powrie, William
600c3f02-00f8-4486-ae4b-b4fc8ec77c3c
Clayton, Christopher R.I.
8397d691-b35b-4d3f-a6d8-40678f233869
Priest, Jeffrey A.
351c5a60-8c47-4050-904b-5a920d376e45
4 December 2020
Mamou, Anna
1b427024-f9e6-4c79-862c-60fe6fba3a34
Powrie, William
600c3f02-00f8-4486-ae4b-b4fc8ec77c3c
Clayton, Christopher R.I.
8397d691-b35b-4d3f-a6d8-40678f233869
Priest, Jeffrey A.
351c5a60-8c47-4050-904b-5a920d376e45
Mamou, Anna, Powrie, William, Clayton, Christopher R.I. and Priest, Jeffrey A.
(2020)
Suitability of empirical equations for estimating permanent settlement of railway foundation materials subjected to cyclic loading with principal stress rotation.
Canadian Geotechnical Journal, 58 (10), .
(doi:10.1139/cgj-2020-0183).
Abstract
This paper uses the results of a series of laboratory tests with cyclic principal stress rotation to assess the suitability of a number of empirical equations for estimating the development of plastic settlements in railway track foundations. The laboratory tests were carried out on three sand–clay mixes representative of railway track foundation materials, in both free-to-drain and undrained conditions. The results of a non-linear regression analysis demonstrate that the drainage conditions are the key factor affecting the estimation accuracy of the models, with the clay content playing a secondary role. The correlation coefficient was generally higher in free-to-drain than in undrained conditions and reduced slightly with increasing clay content.
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e-pub ahead of print date: 10 November 2020
Published date: 4 December 2020
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© 2021, Canadian Science Publishing. All rights reserved.
Keywords:
Axial strain, Cyclic stability, Cyclic tests, Empirical models, Principal stress rotation, Resilient stiffness
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Local EPrints ID: 501594
URI: http://eprints.soton.ac.uk/id/eprint/501594
ISSN: 0008-3674
PURE UUID: f1825b0e-339d-49fd-978f-801048cc37e8
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Date deposited: 04 Jun 2025 16:42
Last modified: 05 Jun 2025 01:37
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Author:
Anna Mamou
Author:
Jeffrey A. Priest
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