A pinboard by
Xuefei Wang

Research Associate, Case Western Reserve University


A combination of advanced testing method and analytical solution to solve practical problems

Wind energy is one of the most promising renewable energy sources, and recent focus has been on offshore wind development projects. The sustainable development of offshore wind energy requires thorough investigations of technological issues. The substructure, which acts as the natural link between the technology and the environment, is a critical topic for the offshore wind industry. The application of traditional offshore wind foundations is limited by the ability to adapt to different water depths. Therefore, innovative foundations types are proposed and investigated in my research, such as suction bucket foundation and hybrid monopile-friction wheel foundation. They are designed with the purpose of covering a larger range of water depths at a lower cost. The main load characteristics of offshore wind turbines are large lateral loads and overturning moments, and earthquake loads for wind farms built in seismically active areas. Therefore, lateral and seismic load conditions are the main concerns in this research. A series of centrifuge tests were performed to investigate the seismic and lateral behaviors of the innovative foundations for offshore wind turbines. Analytical methods were demonstrated and verified with the experimental results. Numerical simulations were also conducted to investigate the soil-structure interactions. The research outcomes are expected to help predict field performances of offshore wind turbines and provide design references for future projects.