Savings potential for support structures of offshore wind turbines

Due to the high ratio of dynamic loads from wind and wave forces on offshore wind turbines, the fatigue design analysis proves to be the determining factor for the dimensioning of support structures. As a result, the current design practice is limited, particularly with regard to the economic benefits of employing high strength steels. Especially from the aspect of mass production, however, the economic optimization of the components is a substantial economic advantage for the companies. This paper presents different options for savings in the design and assessment of offshore-foundation structures and provides the example of a transition piece for a jacket foundation structure. Savings potential is realized through optimal construction design, directionally dependent load determination, a refined methodology of analysis, as well as through modern methods of post weld treatment.