The PISA Joint Industry Project has led to significant advances in monopile design, with 3D Finite Element (FE) analysis playing a key role in the development of the method, as well as in its application in practice. This paper presents 3D FE analyses carried out as part of the design process for monopile foundations for an offshore wind farm in the North Sea. The paper is divided into three parts. The first part demonstrates the ability of the adopted constitutive models to describe the soil response for the soils encountered, on the basis of high quality ground investigation campaigns for the site. The second part presents the calibration of the constitutive model used in the FE analyses to simulate the sands’ response, against the PISA field tests. The third part presents the results of the 3D analyses at different monopile locations across the wind farm, in terms of load displacement curves and structural forces within the monopiles.
Angeliki Grammatikopoulou, Felix C. Schroeder, Giuseppe Pedone, Amandine Brosse, Torben Sørensen, David M. G. Taborda and David M. Potts
Keywords: monopile foundations, finite element analysis, constitutive modelling
Publisher: DFI