Cutting offshore monopile foundation costs

Monopile Combined design analyses successfully reduce risk and overall cost of offshore monopile foundations. Image: Fugro

Reducing the levelised cost of energy for offshore monopile foundations was one of the topics discussed at the at the 9th International Offshore Foundations Conference in Bremen, Germany this month.

During the conference on 10 July, Scott Whyte, geotechnical consultant at Fugro and Joe Hilton, engineering manager at Sea and Land Project Engineering (SLPE) spoke on ‘How the implementation of advanced structural analyses integrated with PISA-type geotechnical analyses can realise significant project benefits and help reduce the levelised cost of energy for offshore monopile foundations’.

They outlined a case study where an integrated and collaborative workflow was adopted between structural and geotechnical focused designers to achieve reductions in project risk and the levelised cost of energy for the Seastar and Mermaid offshore wind farm substation platforms.

Design implementation

Each party implemented design analyses able to be used for monopile foundations. SLPE performed the detailed structural design using a combination of time domain and spectral dynamic analysis techniques and employed Fugro’s soil structure interaction analysis expertise to implement the recommendations from the Pile Soil Analysis (PISA) joint industry project for foundation design.

SLPE’s team developed a dynamic analysis tool capable of capturing ringing effects, due to higher order wave loading, and modelling diffraction effects, including directionality, for appurtenances as well as p-δ effects and linear buckling. This tool was used to compare DNV GL-type geotechnical modelling versus advanced soil modelling reaction curves derived between SLPE and Fugro. Fugro performed 3D finite element analysis using proprietary constitutive soil models to develop site-specific soil reaction curves for detailed structural analysis.

By Rebecca Jeffrey

Latest Press Releases

DLM Design and Manufacture new Detrenching Grapnel

Dynamic Load Monitoring, specialists in the design and manufacture of Load Cell’s and Cable Working ... Read more

Marine Accessories Offers Superior Performance

Dixon is a premier manufacturer and supplier of marine fluid transfer products for a wide range of a... Read more

Caspian Offshore Construction takes swift delivery of Damen Stan Tug 1606 ICE

Caspian Offshore Construction has recently taken delivery of a Damen Stan Tug 1606 ICE class in Kaza... Read more

Third S. T. Marine Support Multi Cat names at Damen Shipyards Hardinxveld

On 2nd August, Damen Shipyards Hardinxveld hosted a naming ceremony for S. T. Marine Support’s new M... Read more

Damen signs milestone pontoon order

Damen Shipyards Group has recently signed a contract for the delivery of a pontoon to France-based c... Read more

Damen installs solar panels at Dutch shipyards

As part of its ongoing commitment to sustainability, Damen Shipyards Group is having solar panels in... Read more

View all