近海风力机塔架塔基的动力特性及稳固性分析方法研究

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根据近海风力机塔架塔基的动力特性及稳固性分析的研究状况，提出近海风力机塔架塔基的动力特性及稳固性分析需要解决的关键技术及相应的解决方案。该方案可用来模拟作用在风力机塔架塔基上的载荷变化特性，推求作用在塔架塔基上的气动载荷、流体动力载荷和海床阻抗载荷，分析在风波海床耦合作用下塔架塔基的固有频率和振型，计算塔架塔基结构节点的位移、速度、加速度和应力响应谱，在此基础上进行海床失稳破坏和塔架塔基结构屈曲失稳破坏分析，为揭示风力机塔架塔基稳固破坏演变规律及机制提供参考。 The key technologies and corresponding solutions were proposed on the dynamic characteristics and stability analysis of offshore wind turbine tower and foundation according to the research situation. The solution can be used to simulate change characteristics of load acted on wind turbine tower and foundation, to deduce the aerodynamic loads, hydrodynamic loads and seabed impedance loads acted on wind turbine tower and foundation, to analyze natural frequency and modes of tower and foundation under combined action of wind, wave and seabed, to calculate displacement, velocity, acceleration and stress response spectrum on structure node of tower and foundation, to analyze the destruction of seabed, tower and foundation instability. It provides a reference to reveal damage evolution law and mechanism of wind turbine tower and foundation.