Investigation of piled foundations in swelling clays
This paper presents the results of element testing and centrifuge modelling to investigate the behaviour of piled foundations in swelling clays. The study revealed that the preparation procedure implemented, was able to retain key hydromechanical properties when compared with undisturbed specimens....
| Main Authors: | , , |
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| Format: | Article |
| Language: | English |
| Published: |
EDP Sciences
2023-01-01
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| Series: | E3S Web of Conferences |
| Online Access: | https://www.e3s-conferences.org/articles/e3sconf/pdf/2023/19/e3sconf_unsat2023_07001.pdf |
| _version_ | 1797835409276796928 |
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| author | Gaspar Tiago A. V. Jacobsz Schalk W. Osman Ashraf S. |
| author_facet | Gaspar Tiago A. V. Jacobsz Schalk W. Osman Ashraf S. |
| author_sort | Gaspar Tiago A. V. |
| collection | DOAJ |
| description | This paper presents the results of element testing and centrifuge modelling to investigate the behaviour of piled foundations in swelling clays. The study revealed that the preparation procedure implemented, was able to retain key hydromechanical properties when compared with undisturbed specimens. Furthermore, the preparation method utilised to create an artificially ‘fissured’ fabric allowed for significant swell magnitudes to be achieved in the centrifuge within a reasonable timeframe. Centrifugetesting illustrated that, at lower magnitudes of swell, increases in lateral pressure against a pile shaft can increase shaft capacity. However, if swell is allowed to continue to large magnitudes, the effects of swellinduced softening tend to dominate, thus resulting in a reduction in shaft capacity. The effects of swellinduced softening are more prominent close to the clay surface where swell is allowed to occur more freely. However, at greater depths where swell is restricted, so too are the effects of swell-induced softening, resulting in local increases in shaft capacity at greater depths. |
| first_indexed | 2024-04-09T14:52:25Z |
| format | Article |
| id | doaj.art-c30130b029b649f0aa6fb829de10536b |
| institution | Directory Open Access Journal |
| issn | 2267-1242 |
| language | English |
| last_indexed | 2024-04-09T14:52:25Z |
| publishDate | 2023-01-01 |
| publisher | EDP Sciences |
| record_format | Article |
| series | E3S Web of Conferences |
| spelling | doaj.art-c30130b029b649f0aa6fb829de10536b2023-05-02T09:28:10ZengEDP SciencesE3S Web of Conferences2267-12422023-01-013820700110.1051/e3sconf/202338207001e3sconf_unsat2023_07001Investigation of piled foundations in swelling claysGaspar Tiago A. V.0Jacobsz Schalk W.1Osman Ashraf S.2University of Sheffield, formerly Durham UniversityUniversity of Pretoria, Department of Civil EngineeringDurham University, Department of EngineeringThis paper presents the results of element testing and centrifuge modelling to investigate the behaviour of piled foundations in swelling clays. The study revealed that the preparation procedure implemented, was able to retain key hydromechanical properties when compared with undisturbed specimens. Furthermore, the preparation method utilised to create an artificially ‘fissured’ fabric allowed for significant swell magnitudes to be achieved in the centrifuge within a reasonable timeframe. Centrifugetesting illustrated that, at lower magnitudes of swell, increases in lateral pressure against a pile shaft can increase shaft capacity. However, if swell is allowed to continue to large magnitudes, the effects of swellinduced softening tend to dominate, thus resulting in a reduction in shaft capacity. The effects of swellinduced softening are more prominent close to the clay surface where swell is allowed to occur more freely. However, at greater depths where swell is restricted, so too are the effects of swell-induced softening, resulting in local increases in shaft capacity at greater depths.https://www.e3s-conferences.org/articles/e3sconf/pdf/2023/19/e3sconf_unsat2023_07001.pdf |
| spellingShingle | Gaspar Tiago A. V. Jacobsz Schalk W. Osman Ashraf S. Investigation of piled foundations in swelling clays E3S Web of Conferences |
| title | Investigation of piled foundations in swelling clays |
| title_full | Investigation of piled foundations in swelling clays |
| title_fullStr | Investigation of piled foundations in swelling clays |
| title_full_unstemmed | Investigation of piled foundations in swelling clays |
| title_short | Investigation of piled foundations in swelling clays |
| title_sort | investigation of piled foundations in swelling clays |
| url | https://www.e3s-conferences.org/articles/e3sconf/pdf/2023/19/e3sconf_unsat2023_07001.pdf |
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