TY - JOUR
T1 - Investigating the monotonic behaviour of hybrid tripod suction bucket foundations for offshore wind towers in sand
AU - Faizi, Koohyar
AU - Faramarzi, Asaad
AU - Dirar, Samir
AU - Chapman, David
N1 - Publisher Copyright:
© 2019 Elsevier Ltd
PY - 2019/8/1
Y1 - 2019/8/1
N2 - 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.
AB - 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.
KW - Finite element models
KW - Hybrid tripod bucket foundations
KW - Overturning capacity
KW - Sand
UR - https://www.scopus.com/pages/publications/85066051240
U2 - 10.1016/j.apor.2019.05.018
DO - 10.1016/j.apor.2019.05.018
M3 - Article
AN - SCOPUS:85066051240
SN - 0141-1187
VL - 89
SP - 176
EP - 187
JO - Applied Ocean Research
JF - Applied Ocean Research
ER -