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The £3.5m Joint Industry Pile Soil Analysis (PISA) project has delivered new design methods for laterally loaded pile foundations, particularly focused on next generation monopiles for offshore wind turbines. The project involved a wide ranging set of activities, from numerical modelling and theoretical developments to laboratory testing and a comprehensive field scale pile testing campaign to provide the validation evidence.
This presentation will provide an overview of the project and the design methods that have been developed, with a focus on both the numerical modelling and the field testing campaign. The implications for design will be highlighted. The PISA project was funded through the Carbon Trust's Offshore Wind Accelerator programme, led by DONG Energy and 10 industry partners, with the scientific work completed by an Academic Workgroup from Oxford University, Imperial College London and University College Dublin.
The project represents a great example of innovation within the sector that is driving down the levelised cost of offshore wind energy.
The following materials are available for download:
Byron Byrne leads on research at Oxford University into the geotechnics of offshore wind foundations, exploring a wide range of solutions, from suction caissons to monopile support structures. Prof Byrne was the Principal Investigator for the PISA project responsible for leading a team of academic researchers collaboratively with the industry funders.
Byron is currently the Oxford Director of the Cranfield / Oxford EPSRC funded Centre for Doctoral Training in Renewable Energy Marine Structures, which is responsible for training the next generation of technical leaders for the renewables sector. In 2011, he delivered the Géotechnique Lecture on "Foundation design for offshore wind turbines". He regularly acts as a consultant to the industry.
Lidija Zdravkovic is currently Head of Geotechnics at Imperial College, with her research focusing on the development and application of numerical methods in geotechnical design. This involves the bespoke finite element code ICFEP and development of solution algorithms, constitutive models and boundary conditions for coupled THM analysis of saturated and unsaturated soils and soil dynamics problems.
Her recent research interests include offshore wind turbine foundations as well as modelling of temperature effects on soil behaviour, with application of the latter to nuclear waste disposal and exploration of geothermal energy. In 2013 she delivered the Géotechnique Lecture on "Geotechnical numerical analysis: A road map". Prof Zdravkovic led the PISA work-stream on numerical modelling for monopile foundations.