TY - GEN
T1 - Finite element modelling of the performance of hybrid foundation systems for offshore wind turbines
AU - Faizi, Koohyar
AU - Faramarzi, Asaad
AU - Dirar, Samir
AU - Chapman, David
PY - 2018/8/24
Y1 - 2018/8/24
N2 - This paper presents the results of a series of numerical simulations predicting the performance of a novel hybrid suction caisson foundation used for offshore wind turbines under overturning moment. The proposed new winged foundation is a hybrid foundation system that utilises steel plate sections attached to a caisson shaft (also steel), to increase its overturning capacity. In this study, a numerical 3D finite-element model with an elasto-plastic soil constitutive model, is developed to simulate the soil-caisson interaction and evaluate the additional overturning capacity provided by the wings. Results indicate significant contribution of the wings to increases overturning capacity compared to a simple caisson foundation through changes in the failure mechanism. The increase in overturning resistance provided by placing wings on a caisson is illustrated by presenting the results for a suction caisson with aspect ratio (embedment length/diameter) of 1. The effect of shape and size of the wing on overturning capacity is investigated.
AB - This paper presents the results of a series of numerical simulations predicting the performance of a novel hybrid suction caisson foundation used for offshore wind turbines under overturning moment. The proposed new winged foundation is a hybrid foundation system that utilises steel plate sections attached to a caisson shaft (also steel), to increase its overturning capacity. In this study, a numerical 3D finite-element model with an elasto-plastic soil constitutive model, is developed to simulate the soil-caisson interaction and evaluate the additional overturning capacity provided by the wings. Results indicate significant contribution of the wings to increases overturning capacity compared to a simple caisson foundation through changes in the failure mechanism. The increase in overturning resistance provided by placing wings on a caisson is illustrated by presenting the results for a suction caisson with aspect ratio (embedment length/diameter) of 1. The effect of shape and size of the wing on overturning capacity is investigated.
UR - http://www.scopus.com/inward/record.url?scp=85053235828&partnerID=8YFLogxK
U2 - 10.1007/978-3-319-99670-7_61
DO - 10.1007/978-3-319-99670-7_61
M3 - Conference contribution
AN - SCOPUS:85053235828
SN - 9783319996691
T3 - Springer Series in Geomechanics and Geoengineering
SP - 495
EP - 501
BT - Energy Geotechnics
PB - Springer
T2 - International Symposium on Energy Geotechnics, SEG 2018
Y2 - 25 September 2018 through 28 September 2018
ER -