Optimum Lectotype Of Support Structures For Offshore Wind Turbines

Wind energy is a kind of clean and renewable energy. With the rapid development of wind power technology, it has become an inevitable trend of the future development of wind power to develop the rich and efficient offshore wind energy. In order to meet the needs of offshore wind energy development, an economical, safe and reliable support structures for offshore wind turbines is designed in this thesis. The structures make use of the advantages of the jackets, reducing the structural weight and wave or current loads on the structure effectively, as well as improving the structural strength and environmental carrying capacity. They provide a new structure for the development of offshore wind power technology.Based on the structural design, the theoretical and numerical methods of structural design optimization are studied in this thesis. Optimal design model is established according to standards given in the strength, stiffness and other requirements in a complex environment. During the period of optimization, the optimization process is divided into two steps to avoid the coupling problem of shape variables and dimension variables. Through optimization, we achieved a series of safe and reliable structures to adapt different conditions.At the same time, different factors on the structural properties are analysised, which provide a reliable reference for the development of offshore wind power technology.These results show that the support structures designed in this thesis are safe and economic, optimization model and method is simple and practical. The analysis of the results is comprehensive and profundity, it provides a new model for the development of offshore wind power technology.