Small-scale Testing of Bucket Foundations in Sand

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

Eksport af forskningsdata: Bog/antologi/afhandling/rapportRapportForskning

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Resumé

For offshore foundation structures, the loads are of varying nature both in magnitude and duration. For the bucket foundation the dissipation of the pore pressure is highly relevant since it greatly affects the strength of the structure. The build up of pore pressures with varying loading rate is therefore a highly relevant research subject. In computational models, e.g. FE-models, normally either a drained or an undrained behaviour is assumed. In real life, the behaviour is partially drained, which calls for a time-dependent model. Especially, the tracking of pore pressures in and around the bucket skirt will provide valuable information of the quasi-static behaviour. For a number of small-scale tests performed in the laboratory at Aalborg University, a bucket foundation will be loaded with varying velocity to investigate the dissipation and general behaviour of bucket foundations used as offshore support structures for wind turbines.
OriginalsprogEngelsk
UdgivelsesstedAalborg
Forlag/udgivende institutionDepartment of Civil Engineering, Aalborg University
Antal sider18
PublikationsstatusUdgivet - 2013
Publikations serierDCE Technical Memorandum
Kommatal33
ISSN1901-7278

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pore pressure
sand
dissipation
support structure
wind turbine
rate
laboratory
test

Emneord

  • Offshore foundations
  • Structures
  • Bucket foundation
  • Pore pressures
  • Offshore wind turbines

Citer dette

Knudsen, B. S., Østergaard, M. U., & Ibsen, L. B. (2013). Small-scale Testing of Bucket Foundations in Sand. Aalborg: Department of Civil Engineering, Aalborg University. DCE Technical Memorandum, Nr. 33
Knudsen, Bjørn S. ; Østergaard, Martin Underlin ; Ibsen, Lars Bo. / Small-scale Testing of Bucket Foundations in Sand. Aalborg : Department of Civil Engineering, Aalborg University, 2013. 18 s. (DCE Technical Memorandum; Nr. 33).
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abstract = "For offshore foundation structures, the loads are of varying nature both in magnitude and duration. For the bucket foundation the dissipation of the pore pressure is highly relevant since it greatly affects the strength of the structure. The build up of pore pressures with varying loading rate is therefore a highly relevant research subject. In computational models, e.g. FE-models, normally either a drained or an undrained behaviour is assumed. In real life, the behaviour is partially drained, which calls for a time-dependent model. Especially, the tracking of pore pressures in and around the bucket skirt will provide valuable information of the quasi-static behaviour. For a number of small-scale tests performed in the laboratory at Aalborg University, a bucket foundation will be loaded with varying velocity to investigate the dissipation and general behaviour of bucket foundations used as offshore support structures for wind turbines.",
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Knudsen, BS, Østergaard, MU & Ibsen, LB 2013, Small-scale Testing of Bucket Foundations in Sand. DCE Technical Memorandum, nr. 33, Department of Civil Engineering, Aalborg University, Aalborg.

Small-scale Testing of Bucket Foundations in Sand. / Knudsen, Bjørn S.; Østergaard, Martin Underlin; Ibsen, Lars Bo.

Aalborg : Department of Civil Engineering, Aalborg University, 2013. 18 s. (DCE Technical Memorandum; Nr. 33).

Eksport af forskningsdata: Bog/antologi/afhandling/rapportRapportForskning

TY - RPRT

T1 - Small-scale Testing of Bucket Foundations in Sand

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AU - Østergaard, Martin Underlin

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N2 - For offshore foundation structures, the loads are of varying nature both in magnitude and duration. For the bucket foundation the dissipation of the pore pressure is highly relevant since it greatly affects the strength of the structure. The build up of pore pressures with varying loading rate is therefore a highly relevant research subject. In computational models, e.g. FE-models, normally either a drained or an undrained behaviour is assumed. In real life, the behaviour is partially drained, which calls for a time-dependent model. Especially, the tracking of pore pressures in and around the bucket skirt will provide valuable information of the quasi-static behaviour. For a number of small-scale tests performed in the laboratory at Aalborg University, a bucket foundation will be loaded with varying velocity to investigate the dissipation and general behaviour of bucket foundations used as offshore support structures for wind turbines.

AB - For offshore foundation structures, the loads are of varying nature both in magnitude and duration. For the bucket foundation the dissipation of the pore pressure is highly relevant since it greatly affects the strength of the structure. The build up of pore pressures with varying loading rate is therefore a highly relevant research subject. In computational models, e.g. FE-models, normally either a drained or an undrained behaviour is assumed. In real life, the behaviour is partially drained, which calls for a time-dependent model. Especially, the tracking of pore pressures in and around the bucket skirt will provide valuable information of the quasi-static behaviour. For a number of small-scale tests performed in the laboratory at Aalborg University, a bucket foundation will be loaded with varying velocity to investigate the dissipation and general behaviour of bucket foundations used as offshore support structures for wind turbines.

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KW - Structures

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KW - Pore pressures

KW - Offshore wind turbines

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Knudsen BS, Østergaard MU, Ibsen LB. Small-scale Testing of Bucket Foundations in Sand. Aalborg: Department of Civil Engineering, Aalborg University, 2013. 18 s. (DCE Technical Memorandum; Nr. 33).