Numerical analysis of the deep soil failure mechanism for perimeter pile groups
In this paper, the lateral limiting pressure offered by the deep ‘flow-around’ soil failure mechanism for perimeter (ring) pile groups in undrained soil is explored using two−dimensional finite element modelling. A parametric study investigates the role of group configuration, pile−soil adhesion, gr...
| Main Authors: | , , , , , |
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| Format: | Journal article |
| Language: | English |
| Published: |
ICE Publishing
2021
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| _version_ | 1797108470609084416 |
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| author | Watford, M Templeman, J Orazalin, Z Zhou, H Franza, A Sheil, BB |
| author_facet | Watford, M Templeman, J Orazalin, Z Zhou, H Franza, A Sheil, BB |
| author_sort | Watford, M |
| collection | OXFORD |
| description | In this paper, the lateral limiting pressure offered by the deep ‘flow-around’ soil failure mechanism for perimeter (ring) pile groups in undrained soil is explored using two−dimensional finite element modelling. A parametric study investigates the role of group configuration, pile−soil adhesion, group size, pile spacing and load direction on group capacity and corresponding soil failure mechanisms. The finite element output show that the plan group configuration (square or circular) has a negligible influence on lateral capacity for closely spaced perimeter pile groups. When compared to ‘full’ square pile groups with the same number of piles, the present results suggest that for practical pile spacing (≳ two pile diameters), perimeter groups do not necessarily increase capacity efficiency, particularly if the piles are smooth. Nevertheless, perimeter groups are shown to be characterized by both the invariance of their capacity to the direction of loading and their highly uniform load sharing between piles, which are beneficial features to optimize design. |
| first_indexed | 2024-03-07T07:29:42Z |
| format | Journal article |
| id | oxford-uuid:f8937190-ccb7-4145-849e-6ca30e478b1f |
| institution | University of Oxford |
| language | English |
| last_indexed | 2024-03-07T07:29:42Z |
| publishDate | 2021 |
| publisher | ICE Publishing |
| record_format | dspace |
| spelling | oxford-uuid:f8937190-ccb7-4145-849e-6ca30e478b1f2022-12-13T09:36:58ZNumerical analysis of the deep soil failure mechanism for perimeter pile groupsJournal articlehttp://purl.org/coar/resource_type/c_dcae04bcuuid:f8937190-ccb7-4145-849e-6ca30e478b1fEnglishSymplectic ElementsICE Publishing2021Watford, MTempleman, JOrazalin, ZZhou, HFranza, ASheil, BBIn this paper, the lateral limiting pressure offered by the deep ‘flow-around’ soil failure mechanism for perimeter (ring) pile groups in undrained soil is explored using two−dimensional finite element modelling. A parametric study investigates the role of group configuration, pile−soil adhesion, group size, pile spacing and load direction on group capacity and corresponding soil failure mechanisms. The finite element output show that the plan group configuration (square or circular) has a negligible influence on lateral capacity for closely spaced perimeter pile groups. When compared to ‘full’ square pile groups with the same number of piles, the present results suggest that for practical pile spacing (≳ two pile diameters), perimeter groups do not necessarily increase capacity efficiency, particularly if the piles are smooth. Nevertheless, perimeter groups are shown to be characterized by both the invariance of their capacity to the direction of loading and their highly uniform load sharing between piles, which are beneficial features to optimize design. |
| spellingShingle | Watford, M Templeman, J Orazalin, Z Zhou, H Franza, A Sheil, BB Numerical analysis of the deep soil failure mechanism for perimeter pile groups |
| title | Numerical analysis of the deep soil failure mechanism for perimeter pile groups |
| title_full | Numerical analysis of the deep soil failure mechanism for perimeter pile groups |
| title_fullStr | Numerical analysis of the deep soil failure mechanism for perimeter pile groups |
| title_full_unstemmed | Numerical analysis of the deep soil failure mechanism for perimeter pile groups |
| title_short | Numerical analysis of the deep soil failure mechanism for perimeter pile groups |
| title_sort | numerical analysis of the deep soil failure mechanism for perimeter pile groups |
| work_keys_str_mv | AT watfordm numericalanalysisofthedeepsoilfailuremechanismforperimeterpilegroups AT templemanj numericalanalysisofthedeepsoilfailuremechanismforperimeterpilegroups AT orazalinz numericalanalysisofthedeepsoilfailuremechanismforperimeterpilegroups AT zhouh numericalanalysisofthedeepsoilfailuremechanismforperimeterpilegroups AT franzaa numericalanalysisofthedeepsoilfailuremechanismforperimeterpilegroups AT sheilbb numericalanalysisofthedeepsoilfailuremechanismforperimeterpilegroups |