Considering the limits of the traditional p-y method and the omission of the non-negligible additional lateral resistance components for large-diameter monopiles, the effects of rotational soil flow and pile tip lateral components on the soil-pile lateral behavior are discussed in detail. A new unified soil reaction model is proposed to obtain a more accurate prediction of the lateral behavior of monopiles supporting offshore wind turbines (OWTs), which consists of the lateral p-y spring, the base moment (M_base-θ) spring and the base shear (T-u) spring. This model is suitable for cases of slender, semi-rigid and rigid piles, and can be modified to include the effects of different soil flow mechanisms, large diameter and base lateral resistances. From the analysis results, the model proposed in this study provides a better prediction and is more appropriate for the design of OWT foundation. The traditional p-y method underestimates the lateral resistance and stiffness of the soil-pile system, is overly conservative and is not economical for the design of OWT foundations.

考虑到传统py方法的局限性和大直径单桩不可忽略的附加横向阻力分量的遗漏，详细讨论了旋转土流和桩尖横向分量对土桩横向行为的影响。为了更准确地预测支撑海上风力涡轮机 (OWT) 的单桩的横向行为，提出了一种新的统一土壤反应模型，该模型由横向py弹簧、基础力矩 ( M _base -θ ) 弹簧和基础剪力组成(涂） 春天。该模型适用于细长、半刚性和刚性桩的情况，可以修改以包括不同土壤流动机制、大直径和基础侧向阻力的影响。从分析结果来看，本研究提出的模型提供了更好的预测，更适合OWT基础的设计。传统的py方法低估了土桩系统的侧向阻力和刚度，过于保守，对于 OWT 地基的设计不经济。