The monopile foundation is the main form of offshore wind turbine foundation,and its surrounding scouring pit will reduce the constraints of the soil on the piles,which makes wind turbine foundation instability a key ...The monopile foundation is the main form of offshore wind turbine foundation,and its surrounding scouring pit will reduce the constraints of the soil on the piles,which makes wind turbine foundation instability a key issue affecting the structural safety of offshore wind turbines.In previous studies,the rotating rotor and control system are neglected when studying the influence of scour on the offshore wind turbine structure.In this paper,the numerical model of the blade-tower-monopile integrated offshore wind turbine is established,and the influence of scour on the dynamic characteristics of wind turbine is obtained considering parameters,such as blade azimuth,pitch angle,rotor speed,and soil stiffness.After calculating wind load by using the modified Blade Element Momentum theory,the impact of scour on the wind-induced response of a monopile wind turbine is achieved,considering control system and aeroelastic coupling.Therefore,a reference method is proposed for estimating scour depth according to the monopile foundation offshore wind turbine wind-induced response.展开更多
文摘The monopile foundation is the main form of offshore wind turbine foundation,and its surrounding scouring pit will reduce the constraints of the soil on the piles,which makes wind turbine foundation instability a key issue affecting the structural safety of offshore wind turbines.In previous studies,the rotating rotor and control system are neglected when studying the influence of scour on the offshore wind turbine structure.In this paper,the numerical model of the blade-tower-monopile integrated offshore wind turbine is established,and the influence of scour on the dynamic characteristics of wind turbine is obtained considering parameters,such as blade azimuth,pitch angle,rotor speed,and soil stiffness.After calculating wind load by using the modified Blade Element Momentum theory,the impact of scour on the wind-induced response of a monopile wind turbine is achieved,considering control system and aeroelastic coupling.Therefore,a reference method is proposed for estimating scour depth according to the monopile foundation offshore wind turbine wind-induced response.
