海上风电复合筒型基础抗波浪液化研究

Anti wave liquefaction of composite bucket foundation of offshore wind turbines

海上风电复合筒型基础周围海床在波浪作用下会发生液化现象,近年来许多学者都对海床抗液化措施进行了研究。采用基于开源软件OpenFOAM建立的波浪-海床-结构物相互作用的CFD-CSD耦合模型,模拟求解波浪作用下海床动力响应及考虑结构物的复杂波浪荷载条件下的响应问题。通过数值模拟复合筒型基础周围的海床表面覆盖不同块石下的动力响应和液化范围分布,表明上覆块石层厚度越大,抗液化效果越好。

The sediment bed around the composite bucket foundation of offshore wind turbines may be liquefied under waves,therefore, many studies have been performed to investigate the anti-liquefaction measures of the seabed in recent years. Basedon the open source OpenFOAM, a CFD-CSD coupling model of wave-seabed-structure interactions has been applied to studythe dynamic response of seabed under wave action and consider the response problems under complex wave load condition ofstructures. The dynamic response and liquefaction distributions of seabed with cover stones around the composite bucketfoundation is investigated by numerical simulations. It can be concluded that the increasing of the thickness of stone layers canenhance the anti-liquefaction capacity of the soil.