Determination of collapse prevention (CP) of offshore wind turbine with jacket platform

One of the important parameters in the design of different structures is to determine the amount of failure at different levels, including the level of failure of the collapse prevention of the structure. Since researchers in recent years have studied the various problem of the design of offshore wind turbine structures, but less reference to this failure criterion under the combination of wave load and wind load, in the present study tried to determine the failure rate of collapse prevention (CP) for an offshore wind turbine with jacket platform, which is one of the most common turbine holding platforms. Attempts have been made to calculate the force applied to the offshore wind turbine under both wave and wind loading, including linear and nonlinear regular wave models and irregular waves. Since regular models do not consider the randomness and irregularity of sea level and focus the wave energy on a frequency, they are not suitable for dynamic analysis. On the other hand, the costly and time-consuming dynamics analysis calculations and the long time history of irregular waves are among the disadvantages of these methods. Therefore, in this research, endurance wave-wind analysis has been used for this important. In this paper, by determining the amount of failure of the collapse prevention of the structure and also the return period of the corresponding loading repetition, it was found that the wave height of CP failure limit for this structure is about 11.5 meters, .