Fatigue design is a key factor to ensure the reliability of offshore structures. Floating offshore Wind Turbines are subjected to cyclic phenomena coming from waves, wind and own vibrations. These loads have to be considered in order to assess the fatigue life of offshore structures. Furthermore, pre-stressed concrete, adds an internal load to the sections which influences in the Fatigue response of the structure. This force, avoids the presence of tension stresses in the section which increases the fatigue resistance, but an excess of compression also reduces the fatigue resistance of the concrete. In order to study the WindCrete Fatigue behaviour for a 5MW Wind Turbine, a Fatigue Limit State verification is performed according to the IEC 61400-3 and FIB Moldel Code (2010) standards. The location chosen to install the WindCrete is the Gulf de Lion, at the West of the Mediteranian Sea at the coast of Catalunya with a mean wind velocity above 9 m/s.

International Offshore Wind Technical Conference (IOWTC2019) program here.