Abstract The hybrid monopile foundation is an alternative for offshore wind turbines. The parametric study has been performed through a series of centrifuge tests for the optimal design of the hybrid foundation. The wheel diameter, wheel thickness, and pile length are considered in the analysis. The lateral capacity of the hybrid monopile foundation increases with the wheel diameter and tends to accelerate; it increases linearly with the wheel thickness and pile length. The influence of the wheel diameter is more pronounced compared to the other parameters. The hybrid monopile demonstrates an enhanced performance compared to the monopile and the single-wheel. The improvement is more significant at small pile lengths. The hybrid monopile shows its advantages in reducing the pile length. It has great potential in reducing capital costs. An analytical method is proposed by scaling the individual capacity of the pile and the wheel. A design chart for the scale factor is suggested. The calculation is applicable for determining the initial dimension of the hybrid monopile foundation, and the ultimate lateral capacity is assessed.

中文翻译：

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无粘性土壤海上风力发电机混合单桩基础参数化研究

摘要 混合单桩基础是海上风力发电机的一种替代方式。参数研究已通过一系列离心机测试进行，以优化混合基础的设计。分析中考虑了车轮直径、车轮厚度和桩长。混合单桩基础的侧向承载力随着车轮直径的增加而增加并趋于加速；它随着车轮厚度和桩长的增加而线性增加。与其他参数相比，车轮直径的影响更为明显。与单桩和单轮相比，混合单桩表现出增强的性能。这种改进在小绒毛长度上更为显着。混合单桩在减少桩长方面显示出优势。它在降低资本成本方面具有巨大潜力。提出了一种通过缩放桩和车轮的单独容量的分析方法。建议使用比例因子的设计图表。该计算适用于确定混合单桩基础的初始尺寸，并评估极限侧向承载力。