Abst'/> Lateral bearing capacity of hybrid monopile-friction wheel foundation for offshore wind turbines by centrifuge modelling
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Lateral bearing capacity of hybrid monopile-friction wheel foundation for offshore wind turbines by centrifuge modelling

机译：离心建模用于海上风力发电机混合单桩-摩擦轮基础的侧向承载力

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AbstractThe hybrid monopile-friction wheel foundation is an innovative alternative for offshore wind turbines. The concept has wider adaptability and can be used as reinforcement method for existing monopiles. A series of centrifuge tests was performed to investigate the lateral bearing capacities of the hybrid foundation under monotonic loads. Five foundation models and two soil types were considered. According to the recorded responses, the hybrid foundation demonstrated better lateral behaviors that both lateral bearing capacity and stiffness are enhanced. Two analytical methods were proposed and compared with the centrifuge test results. The bearing capacity of the hybrid foundation is smaller than the sum of individual pile and friction wheel, and a reduction factor is suggested for both friction wheels. The friction wheel restrains rotations of monopile and provides extra restoring moments; their effects are idealized as equivalent moments acting on the pile head. The analytical results provide possible solutions in estimating the lateral bearing capacity of the innovative hybrid foundation system for offshore wind turbines by using traditional theories.Highlights•The hybrid monopile-friction wheel foundation for offshore wind turbines is investigated.•Centrifuge tests are performed to investigate the lateral bearing capacity of the hybrid foundation.•Five foundation models and two soil conditions are considered.•Two analytical methods are proposed and compared with centrifuge test results.
机译： 摘要 混合式单桩摩擦轮基础是海上风力涡轮机的创新替代产品。该概念具有更广泛的适应性，可以用作现有单桩的加固方法。进行了一系列离心测试，以研究单调载荷下混合基础的侧向承载力。考虑了五个基础模型和两种土壤类型。根据记录的响应，混合动力基础显示出更好的侧向性能，从而增强了侧向承载力和刚度。提出了两种分析方法，并与离心测试结果进行了比较。混合地基的承载力小于单个桩和摩擦轮的总和，并且建议两个摩擦轮的减小系数。摩擦轮可限制单桩的旋转并提供额外的恢复力矩；它们的效果被理想化为等效力矩作用在桩头上。分析结果为利用传统理论估算海上风电创新混合基础系统的侧向承载力提供了可能的解决方案。 < ce：abstract xmlns：ce =“ http://www.elsevier.com/xml/common/dtd” xmlns =“ http://www.elsevier.com/xml/ja/dtd” class =“ author-highlights” xml：lang =“ zh_cn id =” abs0015“ view =” all“> 突出显示 • 研究了用于海上风力涡轮机的混合单桩-摩擦轮基础。 • 进行了离心测试以研究其横向承载力混合基础。 • 考虑了五个基础模型和两个土壤条件。 • 提出了两种分析方法并与离心机测试结果进行比较。

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