### Resumé

Originalsprog | Engelsk |
---|---|

Titel | Frontiers in Offshore Geotechnics III proceedings of the third international symposium on frontiers in offshore geotechnics (isfog 2015), oslo, norway, 10-12 june 2015 |

red. | Vaughan Meyer |

Antal sider | 5 |

Vol/bind | 1 |

Udgivelsessted | London |

Forlag/udgivende institution | CRC Press |

Udgivelsesdato | 2015 |

Sider | 343-348 |

ISBN (tryk) | 978-1-138-02850-0(Volume 1) |

ISBN (elektronisk) | 978-1-215-67551-0 (ebook PDF- Vol.1+2) |

Publikationsstatus | Udgivet - 2015 |

Begivenheder | The 3rd Internationl symposium on Frontiers in offshore Geotechnics - Oslo, Norge Varighed: 10 jun. 2015 → 12 jun. 2015 Konferencenummer: 3 |

### Konference

Konference | The 3rd Internationl symposium on Frontiers in offshore Geotechnics |
---|---|

Kommatal | 3 |

Land | Norge |

By | Oslo |

Periode | 10/06/2015 → 12/06/2015 |

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### Citer dette

*Frontiers in Offshore Geotechnics III proceedings of the third international symposium on frontiers in offshore geotechnics (isfog 2015), oslo, norway, 10-12 june 2015*(Bind 1, s. 343-348). London : CRC Press.

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*Frontiers in Offshore Geotechnics III proceedings of the third international symposium on frontiers in offshore geotechnics (isfog 2015), oslo, norway, 10-12 june 2015 .*Bind 1, CRC Press, London , s. 343-348, The 3rd Internationl symposium on Frontiers in offshore Geotechnics, Oslo, Norge, 10/06/2015.

**P–y curves for bucket foundations in sand using finite element modeling.** / Østergaard, Martin Underlin; Knudsen, Bjørn S.; Ibsen, Lars Bo.

Eksport af forskningsdata: Bidrag til bog/antologi/rapport/konference proceeding › Konferenceartikel i proceeding › Forskning › peer review

TY - GEN

T1 - P–y curves for bucket foundations in sand using finite element modeling

AU - Østergaard, Martin Underlin

AU - Knudsen, Bjørn S.

AU - Ibsen, Lars Bo

N1 - Conference code: 3

PY - 2015

Y1 - 2015

N2 - Pile foundations for offshore wind turbines are often designed using p−y curves, where the soil reaction is given as a function of the pile displacement. The p−y curves are based on experiments done using slender piles, normally used in the oil and gas-industry. The monopiles commonly used today as foundation for offshore wind turbines are much less slender than the piles used to derive the original p−y curves. The bucket foundation is a new and promising foundation concept, which combines the strengths of the monopile with those of the gravity foundation. The bucket foundation is even less slender than a monopile, thus the before mentioned mismatch is even more pronounced. The purpose of this paper is to use 3D finite element modelling in PLAXIS 3D to establish a new p−y curve formulation for the bucket foundation in sand. The new formulation is based on the results of 18 numerical models with varying geometry and soil parameters. In the models, a forced horizontal displacement is applied to the entire bucket foundation and the resulting soil reaction is found by integration of the pressure on the surface of the bucket foundation. The method is applied for increasing displacements to determine several points on the force-displacement curve. In the post-processing of the results, several normalising schemes are applied and a general expression for use on an arbitrary geometry and soil strength is fitted to the results. The expression can be used readily in analytical capacity calculations of the bucket foundation in a sand material.

AB - Pile foundations for offshore wind turbines are often designed using p−y curves, where the soil reaction is given as a function of the pile displacement. The p−y curves are based on experiments done using slender piles, normally used in the oil and gas-industry. The monopiles commonly used today as foundation for offshore wind turbines are much less slender than the piles used to derive the original p−y curves. The bucket foundation is a new and promising foundation concept, which combines the strengths of the monopile with those of the gravity foundation. The bucket foundation is even less slender than a monopile, thus the before mentioned mismatch is even more pronounced. The purpose of this paper is to use 3D finite element modelling in PLAXIS 3D to establish a new p−y curve formulation for the bucket foundation in sand. The new formulation is based on the results of 18 numerical models with varying geometry and soil parameters. In the models, a forced horizontal displacement is applied to the entire bucket foundation and the resulting soil reaction is found by integration of the pressure on the surface of the bucket foundation. The method is applied for increasing displacements to determine several points on the force-displacement curve. In the post-processing of the results, several normalising schemes are applied and a general expression for use on an arbitrary geometry and soil strength is fitted to the results. The expression can be used readily in analytical capacity calculations of the bucket foundation in a sand material.

KW - P-Y Curves

KW - Bucket Foundations

KW - Finite Element Modeling

UR - https://www.crcpress.com/Frontiers-in-Offshore-Geotechnics-III/Meyer/9781138028487

M3 - Article in proceeding

SN - 978-1-138-02850-0(Volume 1)

VL - 1

SP - 343

EP - 348

BT - Frontiers in Offshore Geotechnics III proceedings of the third international symposium on frontiers in offshore geotechnics (isfog 2015), oslo, norway, 10-12 june 2015

A2 - Meyer, Vaughan

PB - CRC Press

CY - London

Y2 - 10 June 2015 through 12 June 2015

ER -