Suitability of a pile group foundation for an offshore wind turbine

Research output: Chapter in book/report/conference proceedingConference contributionResearchpeer review

Authors

External Research Organisations

  • National Cheng Kung University
View graph of relations

Details

Original languageEnglish
Title of host publicationProceedings of the 24th International Ocean and Polar Engineering Conference, ISOPE Busan
Pages222-226
Number of pages5
Publication statusPublished - 2014
Event24th International Ocean and Polar Engineering Conference, ISOPE 2014 Busan - Busan, Korea, Republic of
Duration: 15 Jun 201420 Jun 2014

Publication series

NameProceedings of the International Offshore and Polar Engineering Conference
ISSN (Print)1098-6189
ISSN (electronic)1555-1792

Abstract

Monopile, tripod and jacket structures are the most popular foundations adopted in offshore wind farms in Europe. Piles with diameters mostly larger than 2 m are usually installed for these foundations. More than 500 offshore wind turbines shall be installed in the Taiwan Strait in the next 20 years. However, due to limited pile driving capacity of the marine engineering industry in Taiwan, the pile group foundation with pile diameters of maximum D = 1.6 m is considered as foundation for offshore wind turbines and a research platform. This paper aims to investigate the behavior of multi-pile-soil system under monotonic lateral load. A three-dimensional finite element model with non-linear material behavior of the subsoil was established. The deformation responses of a pile group platform foundation calculated with FEM under monotonic lateral load are compared with the results calculated with a simplified approach based on the p-y-curves method. The bearing behavior of the pile group platform foundation cannot adequately considered by the simplified approach. To evaluate the suitability of group pile platform foundation, the deformation responses of a typical monopile are considered as reference values. The investigated pile group foundation is more flexible than the monopile, i.e the lateral deformations of the piles are much larger than the deformation of the monopile. However, due to the great stiffness of the platform plate the rotation of the platform is within the usual tolerance for offshore wind turbines and even smaller than the inclination of monopile.

Keywords

    Finite element method, Monopile, Monotonic loading, Offshore, P-y-curves method, Pile group

ASJC Scopus subject areas

Cite this

Suitability of a pile group foundation for an offshore wind turbine. / Kuo, Y. S.; Abdel-Rahman, K.; Wu, K. T. et al.
Proceedings of the 24th International Ocean and Polar Engineering Conference, ISOPE Busan. 2014. p. 222-226 (Proceedings of the International Offshore and Polar Engineering Conference).

Research output: Chapter in book/report/conference proceedingConference contributionResearchpeer review

Kuo, YS, Abdel-Rahman, K, Wu, KT, Huang, TY & Achmus, M 2014, Suitability of a pile group foundation for an offshore wind turbine. in Proceedings of the 24th International Ocean and Polar Engineering Conference, ISOPE Busan. Proceedings of the International Offshore and Polar Engineering Conference, pp. 222-226, 24th International Ocean and Polar Engineering Conference, ISOPE 2014 Busan, Busan, Korea, Republic of, 15 Jun 2014. <http://publications.isope.org/proceedings/ISOPE/ISOPE%202014/index.htm>
Kuo, Y. S., Abdel-Rahman, K., Wu, K. T., Huang, T. Y., & Achmus, M. (2014). Suitability of a pile group foundation for an offshore wind turbine. In Proceedings of the 24th International Ocean and Polar Engineering Conference, ISOPE Busan (pp. 222-226). (Proceedings of the International Offshore and Polar Engineering Conference). http://publications.isope.org/proceedings/ISOPE/ISOPE%202014/index.htm
Kuo YS, Abdel-Rahman K, Wu KT, Huang TY, Achmus M. Suitability of a pile group foundation for an offshore wind turbine. In Proceedings of the 24th International Ocean and Polar Engineering Conference, ISOPE Busan. 2014. p. 222-226. (Proceedings of the International Offshore and Polar Engineering Conference).
Kuo, Y. S. ; Abdel-Rahman, K. ; Wu, K. T. et al. / Suitability of a pile group foundation for an offshore wind turbine. Proceedings of the 24th International Ocean and Polar Engineering Conference, ISOPE Busan. 2014. pp. 222-226 (Proceedings of the International Offshore and Polar Engineering Conference).
Download
@inproceedings{a5453feb261c47848a226e7159ee7a07,
title = "Suitability of a pile group foundation for an offshore wind turbine",
abstract = "Monopile, tripod and jacket structures are the most popular foundations adopted in offshore wind farms in Europe. Piles with diameters mostly larger than 2 m are usually installed for these foundations. More than 500 offshore wind turbines shall be installed in the Taiwan Strait in the next 20 years. However, due to limited pile driving capacity of the marine engineering industry in Taiwan, the pile group foundation with pile diameters of maximum D = 1.6 m is considered as foundation for offshore wind turbines and a research platform. This paper aims to investigate the behavior of multi-pile-soil system under monotonic lateral load. A three-dimensional finite element model with non-linear material behavior of the subsoil was established. The deformation responses of a pile group platform foundation calculated with FEM under monotonic lateral load are compared with the results calculated with a simplified approach based on the p-y-curves method. The bearing behavior of the pile group platform foundation cannot adequately considered by the simplified approach. To evaluate the suitability of group pile platform foundation, the deformation responses of a typical monopile are considered as reference values. The investigated pile group foundation is more flexible than the monopile, i.e the lateral deformations of the piles are much larger than the deformation of the monopile. However, due to the great stiffness of the platform plate the rotation of the platform is within the usual tolerance for offshore wind turbines and even smaller than the inclination of monopile.",
keywords = "Finite element method, Monopile, Monotonic loading, Offshore, P-y-curves method, Pile group",
author = "Kuo, {Y. S.} and K. Abdel-Rahman and Wu, {K. T.} and Huang, {T. Y.} and M. Achmus",
year = "2014",
language = "English",
isbn = "9781880653913",
series = "Proceedings of the International Offshore and Polar Engineering Conference",
pages = "222--226",
booktitle = "Proceedings of the 24th International Ocean and Polar Engineering Conference, ISOPE Busan",
note = "24th International Ocean and Polar Engineering Conference, ISOPE 2014 Busan ; Conference date: 15-06-2014 Through 20-06-2014",

}

Download

TY - GEN

T1 - Suitability of a pile group foundation for an offshore wind turbine

AU - Kuo, Y. S.

AU - Abdel-Rahman, K.

AU - Wu, K. T.

AU - Huang, T. Y.

AU - Achmus, M.

PY - 2014

Y1 - 2014

N2 - Monopile, tripod and jacket structures are the most popular foundations adopted in offshore wind farms in Europe. Piles with diameters mostly larger than 2 m are usually installed for these foundations. More than 500 offshore wind turbines shall be installed in the Taiwan Strait in the next 20 years. However, due to limited pile driving capacity of the marine engineering industry in Taiwan, the pile group foundation with pile diameters of maximum D = 1.6 m is considered as foundation for offshore wind turbines and a research platform. This paper aims to investigate the behavior of multi-pile-soil system under monotonic lateral load. A three-dimensional finite element model with non-linear material behavior of the subsoil was established. The deformation responses of a pile group platform foundation calculated with FEM under monotonic lateral load are compared with the results calculated with a simplified approach based on the p-y-curves method. The bearing behavior of the pile group platform foundation cannot adequately considered by the simplified approach. To evaluate the suitability of group pile platform foundation, the deformation responses of a typical monopile are considered as reference values. The investigated pile group foundation is more flexible than the monopile, i.e the lateral deformations of the piles are much larger than the deformation of the monopile. However, due to the great stiffness of the platform plate the rotation of the platform is within the usual tolerance for offshore wind turbines and even smaller than the inclination of monopile.

AB - Monopile, tripod and jacket structures are the most popular foundations adopted in offshore wind farms in Europe. Piles with diameters mostly larger than 2 m are usually installed for these foundations. More than 500 offshore wind turbines shall be installed in the Taiwan Strait in the next 20 years. However, due to limited pile driving capacity of the marine engineering industry in Taiwan, the pile group foundation with pile diameters of maximum D = 1.6 m is considered as foundation for offshore wind turbines and a research platform. This paper aims to investigate the behavior of multi-pile-soil system under monotonic lateral load. A three-dimensional finite element model with non-linear material behavior of the subsoil was established. The deformation responses of a pile group platform foundation calculated with FEM under monotonic lateral load are compared with the results calculated with a simplified approach based on the p-y-curves method. The bearing behavior of the pile group platform foundation cannot adequately considered by the simplified approach. To evaluate the suitability of group pile platform foundation, the deformation responses of a typical monopile are considered as reference values. The investigated pile group foundation is more flexible than the monopile, i.e the lateral deformations of the piles are much larger than the deformation of the monopile. However, due to the great stiffness of the platform plate the rotation of the platform is within the usual tolerance for offshore wind turbines and even smaller than the inclination of monopile.

KW - Finite element method

KW - Monopile

KW - Monotonic loading

KW - Offshore

KW - P-y-curves method

KW - Pile group

UR - http://www.scopus.com/inward/record.url?scp=84906911024&partnerID=8YFLogxK

M3 - Conference contribution

AN - SCOPUS:84906911024

SN - 9781880653913

T3 - Proceedings of the International Offshore and Polar Engineering Conference

SP - 222

EP - 226

BT - Proceedings of the 24th International Ocean and Polar Engineering Conference, ISOPE Busan

T2 - 24th International Ocean and Polar Engineering Conference, ISOPE 2014 Busan

Y2 - 15 June 2014 through 20 June 2014

ER -

By the same author(s)