Visualisation of mechanisms governing suction bucket installation in dense sand

Research output: Chapter in Book/Conference paperConference paper

Abstract

Suction buckets are an increasingly considered foundation option for offshore wind turbines. The required suction can be predicted well using existing methods, though there remains uncertainty around some input parameters, because the effects of suction installation on the soil state are not understood in detail. This paper visualises the response through particle image velocimetry measurements of both initial self-weight penetration and following suction-assisted installation in dense sand, achieved in a centrifuge environment.
Changes in the deformation mechanisms governing the installation process and in the soil properties are revealed, significantly advancing current knowledge. The findings have an impact on the understanding of the formation of internal plug heave – the cause of premature refusal – and the prediction of the installation response. Revealing changes in void ratio and permeability also present implications on the accumulated displacements under the metocean cyclic loading, which may conflict with serviceability requirements.
Original languageEnglish
Title of host publicationPhysical Modelling in Geotechnics
Subtitle of host publicationProceedings of the 9th International Conference on Physical Modelling in Geotechnics (ICPMG 2018), July 17-20, 2018, London, United Kingdom
EditorsAndrew McNamara, Sam Divall, Richard Goodey, Neil Taylor, Sarah Stallebrass, Jignasha Panchal
Place of PublicationLondon, United Kingdom
PublisherTaylor & Francis
Chapter97
Pages651-656
Number of pages6
Volume1
ISBN (Print)9781138559752
DOIs
Publication statusPublished - 2018
Event9th International Conference on Physical Modelling in Geotechnics, ICPMG 2018 - London, United Kingdom
Duration: 17 Jul 201820 Jul 2018
Conference number: 9

Conference

Conference9th International Conference on Physical Modelling in Geotechnics, ICPMG 2018
Abbreviated titleICPMG 2018
CountryUnited Kingdom
CityLondon
Period17/07/1820/07/18

Fingerprint

suction
visualization
Sand
Visualization
sand
Offshore wind turbines
Soils
heave
wind turbine
deformation mechanism
void ratio
Centrifuges
cyclic loading
centrifuge
Velocity measurement
soil property
penetration
permeability
prediction
soil

Cite this

Ragni, R., Bienen, B., Stanier, S. A., Cassidy, M. J., & O’Loughlin, C. D. (2018). Visualisation of mechanisms governing suction bucket installation in dense sand. In A. McNamara, S. Divall, R. Goodey, N. Taylor, S. Stallebrass, & J. Panchal (Eds.), Physical Modelling in Geotechnics: Proceedings of the 9th International Conference on Physical Modelling in Geotechnics (ICPMG 2018), July 17-20, 2018, London, United Kingdom (Vol. 1, pp. 651-656). London, United Kingdom: Taylor & Francis. https://doi.org/10.1201/9780429438660-97
Ragni, R. ; Bienen, B. ; Stanier, S. A. ; Cassidy, M. J. ; O’Loughlin, C. D. / Visualisation of mechanisms governing suction bucket installation in dense sand. Physical Modelling in Geotechnics: Proceedings of the 9th International Conference on Physical Modelling in Geotechnics (ICPMG 2018), July 17-20, 2018, London, United Kingdom. editor / Andrew McNamara ; Sam Divall ; Richard Goodey ; Neil Taylor ; Sarah Stallebrass ; Jignasha Panchal. Vol. 1 London, United Kingdom : Taylor & Francis, 2018. pp. 651-656
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title = "Visualisation of mechanisms governing suction bucket installation in dense sand",
abstract = "Suction buckets are an increasingly considered foundation option for offshore wind turbines. The required suction can be predicted well using existing methods, though there remains uncertainty around some input parameters, because the effects of suction installation on the soil state are not understood in detail. This paper visualises the response through particle image velocimetry measurements of both initial self-weight penetration and following suction-assisted installation in dense sand, achieved in a centrifuge environment.Changes in the deformation mechanisms governing the installation process and in the soil properties are revealed, significantly advancing current knowledge. The findings have an impact on the understanding of the formation of internal plug heave – the cause of premature refusal – and the prediction of the installation response. Revealing changes in void ratio and permeability also present implications on the accumulated displacements under the metocean cyclic loading, which may conflict with serviceability requirements.",
author = "R. Ragni and B. Bienen and Stanier, {S. A.} and Cassidy, {M. J.} and O’Loughlin, {C. D.}",
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Ragni, R, Bienen, B, Stanier, SA, Cassidy, MJ & O’Loughlin, CD 2018, Visualisation of mechanisms governing suction bucket installation in dense sand. in A McNamara, S Divall, R Goodey, N Taylor, S Stallebrass & J Panchal (eds), Physical Modelling in Geotechnics: Proceedings of the 9th International Conference on Physical Modelling in Geotechnics (ICPMG 2018), July 17-20, 2018, London, United Kingdom. vol. 1, Taylor & Francis, London, United Kingdom, pp. 651-656, 9th International Conference on Physical Modelling in Geotechnics, ICPMG 2018, London, United Kingdom, 17/07/18. https://doi.org/10.1201/9780429438660-97

Visualisation of mechanisms governing suction bucket installation in dense sand. / Ragni, R.; Bienen, B.; Stanier, S. A.; Cassidy, M. J.; O’Loughlin, C. D.

Physical Modelling in Geotechnics: Proceedings of the 9th International Conference on Physical Modelling in Geotechnics (ICPMG 2018), July 17-20, 2018, London, United Kingdom. ed. / Andrew McNamara; Sam Divall; Richard Goodey; Neil Taylor; Sarah Stallebrass; Jignasha Panchal. Vol. 1 London, United Kingdom : Taylor & Francis, 2018. p. 651-656.

Research output: Chapter in Book/Conference paperConference paper

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AB - Suction buckets are an increasingly considered foundation option for offshore wind turbines. The required suction can be predicted well using existing methods, though there remains uncertainty around some input parameters, because the effects of suction installation on the soil state are not understood in detail. This paper visualises the response through particle image velocimetry measurements of both initial self-weight penetration and following suction-assisted installation in dense sand, achieved in a centrifuge environment.Changes in the deformation mechanisms governing the installation process and in the soil properties are revealed, significantly advancing current knowledge. The findings have an impact on the understanding of the formation of internal plug heave – the cause of premature refusal – and the prediction of the installation response. Revealing changes in void ratio and permeability also present implications on the accumulated displacements under the metocean cyclic loading, which may conflict with serviceability requirements.

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Ragni R, Bienen B, Stanier SA, Cassidy MJ, O’Loughlin CD. Visualisation of mechanisms governing suction bucket installation in dense sand. In McNamara A, Divall S, Goodey R, Taylor N, Stallebrass S, Panchal J, editors, Physical Modelling in Geotechnics: Proceedings of the 9th International Conference on Physical Modelling in Geotechnics (ICPMG 2018), July 17-20, 2018, London, United Kingdom. Vol. 1. London, United Kingdom: Taylor & Francis. 2018. p. 651-656 https://doi.org/10.1201/9780429438660-97