Numerical Analysis of Cluster and Monopod Suction Bucket Foundation

Kim, Dong Joon; Choo, Yun Wook; Lee, Jinsun; Kim, Dong-Soo; Jee, Sung-Hyun; Choi, Jaehyung; man-soo, Lee; Park, Yung-Ho

doi:10.1115/omae2013-10480

Cited by 4 publications

(1 citation statement)

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“…Various bucket and soil parameters have a direct influence on the bearing capacity of the tripod bucket foundation, such as the ratio of the bucket spacing to the bucket diameter (S/D), the embedment depth of the bucket (L), the soil-bucket friction angle (δ) and the unit weight (γ) of the soil [21,24,25].…”

Section: Take Down Policymentioning

confidence: 99%

Investigating the monotonic behaviour of hybrid tripod suction bucket foundations for offshore wind towers in sand

Faizi

Faramarzi

Dirar

et al. 2019

Applied Ocean Research

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Existing tripod suction bucket foundations, utilised for offshore wind turbines, are required to resist significant lateral loads and overturning moments generated by wind and currents. This paper presents an innovative type of tripod bucket foundation, 'hybrid tripod bucket foundation', for foundations of offshore wind turbines, which has the ability to provide a larger overturning capacity compared with conventional tripod buckets. The proposed foundation consists of a conventional tripod bucket combined with three large circular mats attached to each bucket. A series of experiments were conducted on small-scale models of the proposed foundation subjected to overturning moment under 1g conditions in loose sand. Different circular mat diameter sizes with various bucket spacings were considered and the results were compared with conventional tripod bucket foundation. Finite element models of the proposed foundation were developed and validated using experimental results and were used to conduct a parametric study to understand the behaviour of the hybrid tripod bucket foundation. The results showed that there is a significant increase in overturning capacity provided by the novel foundation. The results of this work can significantly improve lowering the costs associated with installation of foundations to support offshore wind turbines.

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Section: Take Down Policymentioning

confidence: 99%

Investigating the monotonic behaviour of hybrid tripod suction bucket foundations for offshore wind towers in sand

Faizi

Faramarzi

Dirar

et al. 2019

Applied Ocean Research

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Cyclic Behavior of Bucket Anchor Foundation in Silty Sand under Sustained Pull-Out Loads via Centrifuge Model Tests

et al. 2021

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In recent, suction anchor foundations have been encouraged as an alternative for supporting offshore wind turbines in the deep sea. The foundation for offshore wind turbine foundation should be designed considering the cyclic forces, which cause an accumulated displacement of the structure and degradation of the stiffness of the ground-foundation system. However, previous researches for suction anchor behaviors have mostly focused on static loads, although the forces applying on the offshore structure are cyclic in the sea. Moreover, since the suction anchors are always subjected to sustained pullout loads combined with cyclic loading due to the buoyancy forces of the structure, evaluating the in-service performance of suction anchor foundations considering cyclic loadings with sustained pullout loads is also required. In this study, the responses of a suction anchor foundation under cyclic loading along with sustained pull-out loads were investigated via centrifuge model tests. Consequently, it was observed that the behavior of the suction anchor are dependent on the sustained pullout loads, as well as the cyclic loading. This study highlights that the ratio of sustained pull-out loads as well as the cyclic load effect must be considered when analyzing design loads to accurately evaluate the bearing resistance of the suction anchor foundation.

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Pullout resistance of group suction anchors in parallel array installed in silty sand subjected to horizontal loading – Centrifuge and numerical modeling

et al. 2015

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Numerical Analysis of Cluster and Monopod Suction Bucket Foundation

Cited by 4 publications

References 0 publications

Investigating the monotonic behaviour of hybrid tripod suction bucket foundations for offshore wind towers in sand

Investigating the monotonic behaviour of hybrid tripod suction bucket foundations for offshore wind towers in sand

Cyclic Behavior of Bucket Anchor Foundation in Silty Sand under Sustained Pull-Out Loads via Centrifuge Model Tests

Pullout resistance of group suction anchors in parallel array installed in silty sand subjected to horizontal loading – Centrifuge and numerical modeling

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