Axial Load-Transfer Curves for Suction Bucket Foundations in Sand

Publikation: Bidrag til bog/antologi/rapport/konference proceedingKonferenceartikel i proceedingForskningpeer review

Resumé

Multi-footed structures resting on suction buckets (suction caisons) comprise a promising foundation solution for next-generation 10 MW+ offshore wind turbines located in transitional water depths. For such systems, predicting the axial behavior of buckets is a critical design aspect. Load-transfer or t–z curves have been employed for decades as an efficient tool in pile design, however applying existing formulations to suction buckets bears uncertainty. This paper introduces a novel family of static t–z curves (Winkler springs) for suction buckets installed in typical marine sand. The study is based on 50 finite-element models that involve various foundation dimensions and soil properties, as well as drained uplift and compression. The non-linear springs’ properties are therefore linked to suction bucket diameter, friction angle and vertical overburden pressure. Lastly, good agreement is found between the current results and the ones from other numerical studies. Since the proposed t–z curves require only three basic parameters, they may be conveniently implemented in preliminary stages of foundation design.
OriginalsprogEngelsk
TitelThe Proceedings of The Twenty-ninth (2019) International Offshore and Polar Engineering Conference
RedaktørerJin S. Chung, Odd M. Akselsen, HyunWoo Jin, Hiroyasu Kawai, Yongwon Lee, Dmitri Matskevitch, Suak Ho Van, Decheng Wan, Alan M. Wang, Satoru Yamaguchi
Vol/bind2
ForlagInternational Society of Offshore & Polar Engineers
Sider2117-2125
KapitelGeotechnical Engineering, Pile Foundation, Suction Bucket Foundation
ISBN (Elektronisk)978-1-880653-85-2
StatusAccepteret/In press - 2019
BegivenhedThe International Society of Offshore and Polar Engineers 2019 - Honolulu, Hawaii, USA
Varighed: 16 jun. 201919 jun. 2019
Konferencens nummer: 29

Konference

KonferenceThe International Society of Offshore and Polar Engineers 2019
Nummer29
LandUSA
ByHonolulu, Hawaii
Periode16/06/201919/06/2019
NavnProceedings of the International Offshore and Polar Engineering Conference
Nummer2019
Vol/bind29
ISSN1098-6189

Fingerprint

Axial loads
Sand
Offshore wind turbines
Piles
Friction
Soils
Water

Emneord

  • Suction bucket
  • t–z curves
  • Numerical modeling
  • Friction
  • Offshore foundation
  • Sand

Citer dette

Grecu, S., Barari, A., & Ibsen, L. B. (Accepteret/In press). Axial Load-Transfer Curves for Suction Bucket Foundations in Sand. I J. S. Chung, O. M. Akselsen, H. Jin, H. Kawai, Y. Lee, D. Matskevitch, S. H. Van, D. Wan, A. M. Wang, ... S. Yamaguchi (red.), The Proceedings of The Twenty-ninth (2019) International Offshore and Polar Engineering Conference (Bind 2, s. 2117-2125). International Society of Offshore & Polar Engineers. Proceedings of the International Offshore and Polar Engineering Conference, Nr. 2019, Bind. 29
Grecu, Sorin ; Barari, Amin ; Ibsen, Lars Bo. / Axial Load-Transfer Curves for Suction Bucket Foundations in Sand. The Proceedings of The Twenty-ninth (2019) International Offshore and Polar Engineering Conference. red. / Jin S. Chung ; Odd M. Akselsen ; HyunWoo Jin ; Hiroyasu Kawai ; Yongwon Lee ; Dmitri Matskevitch ; Suak Ho Van ; Decheng Wan ; Alan M. Wang ; Satoru Yamaguchi. Bind 2 International Society of Offshore & Polar Engineers, 2019. s. 2117-2125 (Proceedings of the International Offshore and Polar Engineering Conference; Nr. 2019, Bind 29).
@inproceedings{5d8e0e6b864d4577aa6973018926999c,
title = "Axial Load-Transfer Curves for Suction Bucket Foundations in Sand",
abstract = "Multi-footed structures resting on suction buckets (suction caisons) comprise a promising foundation solution for next-generation 10 MW+ offshore wind turbines located in transitional water depths. For such systems, predicting the axial behavior of buckets is a critical design aspect. Load-transfer or t–z curves have been employed for decades as an efficient tool in pile design, however applying existing formulations to suction buckets bears uncertainty. This paper introduces a novel family of static t–z curves (Winkler springs) for suction buckets installed in typical marine sand. The study is based on 50 finite-element models that involve various foundation dimensions and soil properties, as well as drained uplift and compression. The non-linear springs’ properties are therefore linked to suction bucket diameter, friction angle and vertical overburden pressure. Lastly, good agreement is found between the current results and the ones from other numerical studies. Since the proposed t–z curves require only three basic parameters, they may be conveniently implemented in preliminary stages of foundation design.",
keywords = "Suction bucket, t–z curves, Numerical modeling, Friction, Offshore foundation, Sand, Suction bucket, t–z curves, Numerical modeling, Friction, Offshore foundation, Sand",
author = "Sorin Grecu and Amin Barari and Ibsen, {Lars Bo}",
year = "2019",
language = "English",
volume = "2",
series = "Proceedings of the International Offshore and Polar Engineering Conference",
publisher = "International Society of Offshore & Polar Engineers",
number = "2019",
pages = "2117--2125",
editor = "Chung, {Jin S.} and Akselsen, {Odd M.} and HyunWoo Jin and Hiroyasu Kawai and Yongwon Lee and Dmitri Matskevitch and Van, {Suak Ho} and Decheng Wan and Wang, {Alan M.} and Satoru Yamaguchi",
booktitle = "The Proceedings of The Twenty-ninth (2019) International Offshore and Polar Engineering Conference",

}

Grecu, S, Barari, A & Ibsen, LB 2019, Axial Load-Transfer Curves for Suction Bucket Foundations in Sand. i JS Chung, OM Akselsen, H Jin, H Kawai, Y Lee, D Matskevitch, SH Van, D Wan, AM Wang & S Yamaguchi (red), The Proceedings of The Twenty-ninth (2019) International Offshore and Polar Engineering Conference. bind 2, International Society of Offshore & Polar Engineers, Proceedings of the International Offshore and Polar Engineering Conference, nr. 2019, bind 29, s. 2117-2125, Honolulu, Hawaii, USA, 16/06/2019.

Axial Load-Transfer Curves for Suction Bucket Foundations in Sand. / Grecu, Sorin; Barari, Amin; Ibsen, Lars Bo.

The Proceedings of The Twenty-ninth (2019) International Offshore and Polar Engineering Conference. red. / Jin S. Chung; Odd M. Akselsen; HyunWoo Jin; Hiroyasu Kawai; Yongwon Lee; Dmitri Matskevitch; Suak Ho Van; Decheng Wan; Alan M. Wang; Satoru Yamaguchi. Bind 2 International Society of Offshore & Polar Engineers, 2019. s. 2117-2125 (Proceedings of the International Offshore and Polar Engineering Conference; Nr. 2019, Bind 29).

Publikation: Bidrag til bog/antologi/rapport/konference proceedingKonferenceartikel i proceedingForskningpeer review

TY - GEN

T1 - Axial Load-Transfer Curves for Suction Bucket Foundations in Sand

AU - Grecu, Sorin

AU - Barari, Amin

AU - Ibsen, Lars Bo

PY - 2019

Y1 - 2019

N2 - Multi-footed structures resting on suction buckets (suction caisons) comprise a promising foundation solution for next-generation 10 MW+ offshore wind turbines located in transitional water depths. For such systems, predicting the axial behavior of buckets is a critical design aspect. Load-transfer or t–z curves have been employed for decades as an efficient tool in pile design, however applying existing formulations to suction buckets bears uncertainty. This paper introduces a novel family of static t–z curves (Winkler springs) for suction buckets installed in typical marine sand. The study is based on 50 finite-element models that involve various foundation dimensions and soil properties, as well as drained uplift and compression. The non-linear springs’ properties are therefore linked to suction bucket diameter, friction angle and vertical overburden pressure. Lastly, good agreement is found between the current results and the ones from other numerical studies. Since the proposed t–z curves require only three basic parameters, they may be conveniently implemented in preliminary stages of foundation design.

AB - Multi-footed structures resting on suction buckets (suction caisons) comprise a promising foundation solution for next-generation 10 MW+ offshore wind turbines located in transitional water depths. For such systems, predicting the axial behavior of buckets is a critical design aspect. Load-transfer or t–z curves have been employed for decades as an efficient tool in pile design, however applying existing formulations to suction buckets bears uncertainty. This paper introduces a novel family of static t–z curves (Winkler springs) for suction buckets installed in typical marine sand. The study is based on 50 finite-element models that involve various foundation dimensions and soil properties, as well as drained uplift and compression. The non-linear springs’ properties are therefore linked to suction bucket diameter, friction angle and vertical overburden pressure. Lastly, good agreement is found between the current results and the ones from other numerical studies. Since the proposed t–z curves require only three basic parameters, they may be conveniently implemented in preliminary stages of foundation design.

KW - Suction bucket

KW - t–z curves

KW - Numerical modeling

KW - Friction

KW - Offshore foundation

KW - Sand

KW - Suction bucket

KW - t–z curves

KW - Numerical modeling

KW - Friction

KW - Offshore foundation

KW - Sand

UR - http://www.isope.org/index.php/proceedings-isope/

M3 - Article in proceeding

VL - 2

T3 - Proceedings of the International Offshore and Polar Engineering Conference

SP - 2117

EP - 2125

BT - The Proceedings of The Twenty-ninth (2019) International Offshore and Polar Engineering Conference

A2 - Chung, Jin S.

A2 - Akselsen, Odd M.

A2 - Jin, HyunWoo

A2 - Kawai, Hiroyasu

A2 - Lee, Yongwon

A2 - Matskevitch, Dmitri

A2 - Van, Suak Ho

A2 - Wan, Decheng

A2 - Wang, Alan M.

A2 - Yamaguchi, Satoru

PB - International Society of Offshore & Polar Engineers

ER -

Grecu S, Barari A, Ibsen LB. Axial Load-Transfer Curves for Suction Bucket Foundations in Sand. I Chung JS, Akselsen OM, Jin H, Kawai H, Lee Y, Matskevitch D, Van SH, Wan D, Wang AM, Yamaguchi S, red., The Proceedings of The Twenty-ninth (2019) International Offshore and Polar Engineering Conference. Bind 2. International Society of Offshore & Polar Engineers. 2019. s. 2117-2125. (Proceedings of the International Offshore and Polar Engineering Conference; Nr. 2019, Bind 29).