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Centrifuge modeling of offshore wind foundations under earthquake loading

机译：地震作用下海上风电基础离心模型

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The construction of large offshore wind turbines in seismic active regions has great demand on the design of foundations. The occurrence of soil liquefaction under seismic motion will affect the stability of the foundations and consequently the operation of the turbines. In this study, a group of earthquake centrifuge tests was performed on wind turbine models with gravity and monopile foundations, respectively, to exam their seismic response. It was found that the seismic behavior of models was quite different in the dry or saturated conditions. Each type of foundation exhibited distinct response to the earthquake loading, especially in the offshore environment. In the supplementary tests, several remediation methods were evaluated in order to mitigate the relatively large lateral displacement of pile foundation (by fixed-end pile and multi-pile foundation) and excessive settlement of gravity foundation (by densification, stone column, and cementation techniques). (C) 2015 Elsevier Ltd. All rights reserved.
机译：在地震活跃地区建造大型海上风力涡轮机对地基设计有很高的要求。地震作用下土壤液化的发生将影响地基的稳定性，进而影响涡轮机的运行。在这项研究中，分别在具有重力和单桩基础的风力涡轮机模型上进行了一组地震离心机测试，以检验其地震响应。结果发现，在干燥或饱和条件下，模型的抗震性能差异很大。每种类型的基础都表现出对地震荷载的不同响应，尤其是在近海环境中。在补充测试中，评估了几种补救方法，以减轻桩基础的较大横向位移（通过固定端桩和多层桩基础）和重力基础的过度沉降（通过密实，石柱和固井技术） ）。 （C）2015 Elsevier Ltd.保留所有权利。

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