Minimum embedded length of cyclic horizontally loaded monopiles

Yu Shu Kuo, Martin Achmus, Khalid Abdel-Rahman

研究成果: Article同行評審

88 引文 斯高帕斯(Scopus)

摘要

Monopiles are used as foundation structures for offshore wind energy towers. To ensure stable behavior of the monopile under cyclic loading conditions, a minimum embedded length is usually required. For this, different design criteria are used, some of which result in very large embedded depths for large-diameter monopiles. The suitability of these criteria is tested by means of numerical simulations. To account for cyclic loading, a new approach called the stiffness degradation method is applied. The results of a parametric study show that the design criteria used can indeed ensure optimum pile performance under static and cyclic loads. It is recommended that the requirement of a critical pile length, which leads to the minimum pile deflection under extreme load, is used as a design criterion. For the cases considered, this requirement results in only slightly greater cyclic deformations compared to the optimum case of very long piles. A further optimization of the required monopile length with respect to cyclic loading is possible, but requires specific consideration of cyclic behavior, as is done in this paper.

原文English
頁(從 - 到)357-363
頁數7
期刊Journal of Geotechnical and Geoenvironmental Engineering
138
發行號3
DOIs
出版狀態Published - 2012 3月 30

All Science Journal Classification (ASJC) codes

  • 一般環境科學
  • 岩土工程與工程地質

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