Finite element modelling of winged suction caissons in clay under uniaxial and combined loading

Research output: Contribution to conference (unpublished)Paper

Standard

Finite element modelling of winged suction caissons in clay under uniaxial and combined loading. / Darby, Laurence; Faramarzi, Asaad; Faizi, Koohyar; Mehravar, Moura; Harireche, Ouahid.

2019. Paper presented at 2nd International Conference on Natural Hazards and Infrastructure, Chania, Greece.

Research output: Contribution to conference (unpublished)Paper

Harvard

Darby, L, Faramarzi, A, Faizi, K, Mehravar, M & Harireche, O 2019, 'Finite element modelling of winged suction caissons in clay under uniaxial and combined loading', Paper presented at 2nd International Conference on Natural Hazards and Infrastructure, Chania, Greece, 23/06/19 - 26/06/19.

APA

Darby, L., Faramarzi, A., Faizi, K., Mehravar, M., & Harireche, O. (2019). Finite element modelling of winged suction caissons in clay under uniaxial and combined loading. Paper presented at 2nd International Conference on Natural Hazards and Infrastructure, Chania, Greece.

Vancouver

Darby L, Faramarzi A, Faizi K, Mehravar M, Harireche O. Finite element modelling of winged suction caissons in clay under uniaxial and combined loading. 2019. Paper presented at 2nd International Conference on Natural Hazards and Infrastructure, Chania, Greece.

Author

Darby, Laurence ; Faramarzi, Asaad ; Faizi, Koohyar ; Mehravar, Moura ; Harireche, Ouahid. / Finite element modelling of winged suction caissons in clay under uniaxial and combined loading. Paper presented at 2nd International Conference on Natural Hazards and Infrastructure, Chania, Greece.

Bibtex

@conference{1f743cbd8826465c9c80992774a0b416,
title = "Finite element modelling of winged suction caissons in clay under uniaxial and combined loading",
abstract = "Suction caisson foundations, also known as skirted foundations, have recently become a relatively popular solution to support offshore wind turbines. These foundations however, have limited capacity compared to monopiles, particularly when exposed to combined loads reflective of those imposed by offshore wind turbines. The situation may become worse with the introduction of hyper-tall wind turbines and the increasing intensity of storms, including the possibility of hurricanes, which will impose large torsional and overturning moments on the superstructure. This study proposes an innovative solution for foundations of offshore wind turbines in the form of a winged suction caisson which can enhance the torsional capacity of the foundation. In this research, finite element models of the proposed foundation are developed to study its performance in clay under torsional loading combined with horizontal and overturning loads. The results are presented graphically using failure envelopes. The results show a substantial improvement in the overall capacity of the foundation with the addition of wings under combined loading (at least over 40% increase) compared to a conventional suction caisson foundation. ",
keywords = "suction caisson foundation, offshore wind turbines, undrained, torsion, combined loading",
author = "Laurence Darby and Asaad Faramarzi and Koohyar Faizi and Moura Mehravar and Ouahid Harireche",
year = "2019",
month = jun
day = "23",
language = "English",
note = "2nd International Conference on Natural Hazards and Infrastructure, ICONHIC2019 ; Conference date: 23-06-2019 Through 26-06-2019",

}

RIS

TY - CONF

T1 - Finite element modelling of winged suction caissons in clay under uniaxial and combined loading

AU - Darby, Laurence

AU - Faramarzi, Asaad

AU - Faizi, Koohyar

AU - Mehravar, Moura

AU - Harireche, Ouahid

PY - 2019/6/23

Y1 - 2019/6/23

N2 - Suction caisson foundations, also known as skirted foundations, have recently become a relatively popular solution to support offshore wind turbines. These foundations however, have limited capacity compared to monopiles, particularly when exposed to combined loads reflective of those imposed by offshore wind turbines. The situation may become worse with the introduction of hyper-tall wind turbines and the increasing intensity of storms, including the possibility of hurricanes, which will impose large torsional and overturning moments on the superstructure. This study proposes an innovative solution for foundations of offshore wind turbines in the form of a winged suction caisson which can enhance the torsional capacity of the foundation. In this research, finite element models of the proposed foundation are developed to study its performance in clay under torsional loading combined with horizontal and overturning loads. The results are presented graphically using failure envelopes. The results show a substantial improvement in the overall capacity of the foundation with the addition of wings under combined loading (at least over 40% increase) compared to a conventional suction caisson foundation.

AB - Suction caisson foundations, also known as skirted foundations, have recently become a relatively popular solution to support offshore wind turbines. These foundations however, have limited capacity compared to monopiles, particularly when exposed to combined loads reflective of those imposed by offshore wind turbines. The situation may become worse with the introduction of hyper-tall wind turbines and the increasing intensity of storms, including the possibility of hurricanes, which will impose large torsional and overturning moments on the superstructure. This study proposes an innovative solution for foundations of offshore wind turbines in the form of a winged suction caisson which can enhance the torsional capacity of the foundation. In this research, finite element models of the proposed foundation are developed to study its performance in clay under torsional loading combined with horizontal and overturning loads. The results are presented graphically using failure envelopes. The results show a substantial improvement in the overall capacity of the foundation with the addition of wings under combined loading (at least over 40% increase) compared to a conventional suction caisson foundation.

KW - suction caisson foundation

KW - offshore wind turbines

KW - undrained

KW - torsion

KW - combined loading

UR - https://iconhic.com/2019/

M3 - Paper

T2 - 2nd International Conference on Natural Hazards and Infrastructure

Y2 - 23 June 2019 through 26 June 2019

ER -