2020 Volume 76 Issue 2 Pages I_887-I_892
The Japanese technical standard for the offshore bottom-fixed wind power generation facility basically follow the international standard established by IEC, considering the natural conditions in the Northern Europe. Therefore, it is necessary to consider the oceanographic conditions such as the high waves and swell associated with the typhoon in the Japanese technical standard, appropriately. However, there are few studies on the effects of the above ocean waves on the dynamic response of the offshore bottom-fixed wind turbine. In this study, we investigated the characteristics on the dynamic response of the monopile-type offshore bottom-fixed wind turbine in operation under the winds and waves by using the load coupled analysis. As a result, it is found that the bending moment on the sea bottom follows the wave loads over the rated wind velocity at the hub height although it follows the wind loads under the rated wind velocity, mainly.
