A wide-shallow bucket is connected to a monopile for offshore wind turbines to withstand the severe loading conditions in marine environments and this innovative pile-bucket foundation has not been investigated comprehensively. In this paper, a monopile, wide shallow mono-bucket and pile-bucket were firstly tested under lateral loading via geotechnical centrifuge to examine the performance of the hybrid foundation. The results of the centrifuge tests and extensive finite element analyses with dimensions of an actual wind turbine foundation show that the addition of the bucket significantly enhances the lateral bearing capacity and stiffness of the monopile in both sand and soft clay. The load transfer mechanism, failure mode and bearing behavior are illustrated to study how the bucket and pile component contribute to the performance of the foundation system and the interactions of the pile-soil-bucket. Finally, parametric studies about the loading eccentricity and geometry of the bucket are carried out to provide references for the engineering practice.

宽浅铲斗连接到海上风力涡轮机的单桩上，以承受海洋环境中的严酷负载条件，而这种创新的桩斗基础尚未得到全面研究。本文首先通过岩土离心机对侧向荷载下的单桩，宽浅单桶和桩桶进行了测试，以检验混合地基的性能。离心测试的结果以及对实际风力发电机基础尺寸进行的广泛有限元分析表明，增加铲斗可显着提高沙子和软粘土中单桩的侧向承载能力和刚度。负载转移机制 给出了破坏模式和承载特性，以研究桶和桩组件如何对基础系统的性能以及桩-土-桶的相互作用产生影响。最后，对铲斗的装载偏心率和几何形状进行了参数研究，为工程实践提供了参考。