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Effect of prior loading cycles on vertical bearing capacity of clay

Effect of prior loading cycles on vertical bearing capacity of clay
Effect of prior loading cycles on vertical bearing capacity of clay

The strength of a foundation on soft clay rises over time due to consolidation under the applied load. This effect can be advantageous in design. Previous studies have identified relationships between the level of monotonic vertical preload, as a proportion of the initial bearing capacity, and the subsequent consolidated bearing capacity. This study explores the influence of cycles of preloading by way of centrifuge model tests, and shows that repeated preloading leads to a further gain in bearing capacity. The gains are more significant if the preloading involves two-way cycles. For the cases explored in this study, the cyclic effect typically adds 50% to the gain in bearing capacity caused by the same preload applied monotonically.

Foundations, Geotechnical engineering
1346-213X
88-98
Vulpe, Cristina
69986563-ade3-4971-9611-2005a2d60af7
White, David J.
a986033d-d26d-4419-a3f3-20dc54efce93
Vulpe, Cristina
69986563-ade3-4971-9611-2005a2d60af7
White, David J.
a986033d-d26d-4419-a3f3-20dc54efce93

Vulpe, Cristina and White, David J. (2014) Effect of prior loading cycles on vertical bearing capacity of clay. International Journal of Physical Modelling in Geotechnics, 14 (4), 88-98. (doi:10.1680/ijpmg.14.00013).

Record type: Article

Abstract

The strength of a foundation on soft clay rises over time due to consolidation under the applied load. This effect can be advantageous in design. Previous studies have identified relationships between the level of monotonic vertical preload, as a proportion of the initial bearing capacity, and the subsequent consolidated bearing capacity. This study explores the influence of cycles of preloading by way of centrifuge model tests, and shows that repeated preloading leads to a further gain in bearing capacity. The gains are more significant if the preloading involves two-way cycles. For the cases explored in this study, the cyclic effect typically adds 50% to the gain in bearing capacity caused by the same preload applied monotonically.

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More information

Published date: 1 January 2014
Keywords: Foundations, Geotechnical engineering

Identifiers

Local EPrints ID: 419760
URI: http://eprints.soton.ac.uk/id/eprint/419760
ISSN: 1346-213X
PURE UUID: 95607814-d41a-49fb-a3b3-f8b87631b429
ORCID for David J. White: ORCID iD orcid.org/0000-0002-2968-582X

Catalogue record

Date deposited: 20 Apr 2018 16:30
Last modified: 16 Mar 2024 04:32

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Contributors

Author: Cristina Vulpe
Author: David J. White ORCID iD

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