Gaspar, T.A.V. orcid.org/0000-0002-3746-2714, Jacobsz, S., Smit, G. et al. (1 more author) (2024) Centrifuge modelling of piled foundations in swelling clays. Canadian Geotechnical Journal, 61 (1). pp. 46-58. ISSN 0008-3674
Abstract
A study aimed towards assessing the variation in shaft capacity of piled foundations in swelling clays is presented. At the clay’s in-situ water content, the results of pull-out tests on short length piles revealed no dependency of shaft capacity on overburden stress. Conversely, after achieving a targeted value of swell, a strong dependency on overburden stress was observed. In upper portions of the profile where swell can occur relatively freely, swell-induced softening results in a reduction in pile shaft capacity. However, at greater depths where swell is largely suppressed, so too are the effects of swell-induced softening. For this reason, shaft capacity at depth was found to remain relatively constant before and after swell. The results of an instrumented pile test revealed an overriding dependency of lateral induced swell pressure on the magnitude of heave which has occurred. Irrespective of the level of overburden stress, lateral pressures against the pile were found to increase at early stages of the swelling process, but then reduce as swell continued and softening began to occur. Such a result highlights the importance of specifying the level of swell at which shaft capacity should be assessed if a conservative design is to be obtained.
Metadata
Item Type: | Article |
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Authors/Creators: |
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Copyright, Publisher and Additional Information: | © 2023 The Authors. Except as otherwise noted, this author-accepted version of a journal article published in Canadian Geotechnical Journal is made available via the University of Sheffield Research Publications and Copyright Policy under the terms of the Creative Commons Attribution 4.0 International License (CC-BY 4.0), which permits unrestricted use, distribution and reproduction in any medium, provided the original work is properly cited. To view a copy of this licence, visit http://creativecommons.org/licenses/by/4.0/ |
Dates: |
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Institution: | The University of Sheffield |
Academic Units: | The University of Sheffield > Faculty of Engineering (Sheffield) > Department of Civil and Structural Engineering (Sheffield) |
Depositing User: | Symplectic Sheffield |
Date Deposited: | 19 Jun 2023 14:07 |
Last Modified: | 03 Oct 2024 15:36 |
Status: | Published |
Publisher: | Canadian Science Publishing |
Refereed: | Yes |
Identification Number: | 10.1139/cgj-2022-0449 |
Open Archives Initiative ID (OAI ID): | oai:eprints.whiterose.ac.uk:200528 |