Determination of p-y Curves for Bucket Foundations in Sand Using Finite Element Modeling

Bjørn S. Knudsen, Martin Underlin Østergaard, Lars Bo Ibsen, Johan Clausen

Publikation: Bog/antologi/afhandling/rapportRapportForskning

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Resumé

Cylindrical offshore wind turbine foundations, such as bucket foundations and monopiles, have up till now been designed using analytical methods based on experiments done with piles much more slender than the ones used in today’s industry. Compared to the widely used monopile foundation, the suction bucket has a much smaller ratio between length and diameter, and the suction buckets will thus act more as a rigid object during rotation in the soil. To improve the design of suction buckets through analytical methods, the soil pressure needs to be calculated more precisely since currently available p􀀀y curves, linking displacement and soil pressure, are based on more slender cylindrical structures. Using finite element methods, the p􀀀y curves for suction buckets will be determined as a function of the internal angle of friction of the soil, the diameter and the skirt length of the suction buckets, which can in turn be applied in determination of soil pressures for analytical design methods of suction bucket foundations.
OriginalsprogEngelsk
Udgivelses stedAalborg
ForlagDepartment of Civil Engineering, Aalborg University
Antal sider16
StatusUdgivet - 2013
NavnDCE Technical Memorandum
Nummer31
ISSN1901-7278

Fingerprint

Sand
Soils
Offshore wind turbines
Piles
Friction
Finite element method
Industry
Experiments

Emneord

  • Foundations
  • Offshore wind turbines
  • Bucket foundations
  • Monopiles

Citer dette

Knudsen, B. S., Østergaard, M. U., Ibsen, L. B., & Clausen, J. (2013). Determination of p-y Curves for Bucket Foundations in Sand Using Finite Element Modeling. Aalborg: Department of Civil Engineering, Aalborg University. DCE Technical Memorandum, Nr. 31
Knudsen, Bjørn S. ; Østergaard, Martin Underlin ; Ibsen, Lars Bo ; Clausen, Johan. / Determination of p-y Curves for Bucket Foundations in Sand Using Finite Element Modeling. Aalborg : Department of Civil Engineering, Aalborg University, 2013. 16 s. (DCE Technical Memorandum; Nr. 31).
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abstract = "Cylindrical offshore wind turbine foundations, such as bucket foundations and monopiles, have up till now been designed using analytical methods based on experiments done with piles much more slender than the ones used in today’s industry. Compared to the widely used monopile foundation, the suction bucket has a much smaller ratio between length and diameter, and the suction buckets will thus act more as a rigid object during rotation in the soil. To improve the design of suction buckets through analytical methods, the soil pressure needs to be calculated more precisely since currently available p􀀀y curves, linking displacement and soil pressure, are based on more slender cylindrical structures. Using finite element methods, the p􀀀y curves for suction buckets will be determined as a function of the internal angle of friction of the soil, the diameter and the skirt length of the suction buckets, which can in turn be applied in determination of soil pressures for analytical design methods of suction bucket foundations.",
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Knudsen, BS, Østergaard, MU, Ibsen, LB & Clausen, J 2013, Determination of p-y Curves for Bucket Foundations in Sand Using Finite Element Modeling. DCE Technical Memorandum, nr. 31, Department of Civil Engineering, Aalborg University, Aalborg.

Determination of p-y Curves for Bucket Foundations in Sand Using Finite Element Modeling. / Knudsen, Bjørn S.; Østergaard, Martin Underlin; Ibsen, Lars Bo; Clausen, Johan.

Aalborg : Department of Civil Engineering, Aalborg University, 2013. 16 s. (DCE Technical Memorandum; Nr. 31).

Publikation: Bog/antologi/afhandling/rapportRapportForskning

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T1 - Determination of p-y Curves for Bucket Foundations in Sand Using Finite Element Modeling

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PY - 2013

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N2 - Cylindrical offshore wind turbine foundations, such as bucket foundations and monopiles, have up till now been designed using analytical methods based on experiments done with piles much more slender than the ones used in today’s industry. Compared to the widely used monopile foundation, the suction bucket has a much smaller ratio between length and diameter, and the suction buckets will thus act more as a rigid object during rotation in the soil. To improve the design of suction buckets through analytical methods, the soil pressure needs to be calculated more precisely since currently available p􀀀y curves, linking displacement and soil pressure, are based on more slender cylindrical structures. Using finite element methods, the p􀀀y curves for suction buckets will be determined as a function of the internal angle of friction of the soil, the diameter and the skirt length of the suction buckets, which can in turn be applied in determination of soil pressures for analytical design methods of suction bucket foundations.

AB - Cylindrical offshore wind turbine foundations, such as bucket foundations and monopiles, have up till now been designed using analytical methods based on experiments done with piles much more slender than the ones used in today’s industry. Compared to the widely used monopile foundation, the suction bucket has a much smaller ratio between length and diameter, and the suction buckets will thus act more as a rigid object during rotation in the soil. To improve the design of suction buckets through analytical methods, the soil pressure needs to be calculated more precisely since currently available p􀀀y curves, linking displacement and soil pressure, are based on more slender cylindrical structures. Using finite element methods, the p􀀀y curves for suction buckets will be determined as a function of the internal angle of friction of the soil, the diameter and the skirt length of the suction buckets, which can in turn be applied in determination of soil pressures for analytical design methods of suction bucket foundations.

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KW - Offshore wind turbine

KW - Bucket foundations

KW - Monopiles

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Knudsen BS, Østergaard MU, Ibsen LB, Clausen J. Determination of p-y Curves for Bucket Foundations in Sand Using Finite Element Modeling. Aalborg: Department of Civil Engineering, Aalborg University, 2013. 16 s. (DCE Technical Memorandum; Nr. 31).