ABSTRACT

For offshore wind turbines several types of foundation exist. The choice of foundation depends on the site and loading conditions. The monopile foundation concept, in which a pile made of welded steel is driven open-ended into the soil, is often employed. Typically, the pile diameter, D, is in the range of 4-6 m and the embedded pile length, L, around 20-25 m. Hereby the slenderness ratio, L/D, has a magnitude around 5.