漂浮式海上风电塔新型基础设计

Design of New Type of Foundation for the Floating Offshore Wind Power Tower

结合不倒翁不易倾覆的原理,提出半球壳形式的漂浮式基础,采用数值模拟验证新型基础形式的可行性与结构的整体稳定性,借助Morison理论和线性波理论构建波浪载荷模型,考虑风电塔结构在不同波浪载荷模型下的运行工况,得到风电塔结构在不同工况下的响应规律。结果表明,使用该种新型基础的海上风电塔结构在微浪、轻浪,以及中浪载荷下具有很好的稳定性;在巨浪载荷作用下,漂浮式风电塔结构发生较大幅度晃动,但不会发生倾覆,满足漂浮式海上风电塔安全稳定性要求。

Combined with the principle of that the tumbler is not easy to overturn,a floating foundation with hemispherical shell was proposed.The feasibility of the new floating foundation and the overall stability of the structure were verified numerically.With the help of Morison theory and linear wave theory,the wave load model was established.Considering the operation conditions of wind turbine tower under different wave load models,the response law of wind turbine tower under different working conditions was obtained.The results showed that the offshore wind turbine tower with the new foundation has good stability under the load of small wave,light wave and medium wave,under the action of huge wave load,the floating wind turbine tower has large shaking amplitude,but it will not overturn,which meets the safety and stability requirements of floating offshore wind tower.