针对海上风力机塔柱支撑结构受到土基、海洋流体作用的复杂特点，开展多介质耦合条件下塔柱支撑结构动力特性研究。在考虑流固耦合基础上，进一步考虑海床土基弹性条件对塔柱结构动力特性的影响。最后得出了水流、土基与塔柱结构三合一综合动力特性分析结果，初步取得了变化规律。研究结果对海上风电场塔架支撑结构的抗振设计及进一步的研究提供了重要基础性参考依据。

Based on the feature that offshore wind turbine tower supporting structures are affected by soil foundation and the ocean flow, the paper carries out research on supporting system structure with multi-medium coupling. Based on considering fluid-solid coupling, the paper discusses the effect of seabed soil foundation elastic conditions on tower's dynamic characteristics. The comprehensive analytical result of dynamic characteristics with soil-fluid-solid coupling is given in the end and the change law is got preliminary. The findings will provide an important fundamental basis on the anti-vibration design of offshore wind farms tower supporting structure and further research.