Investigation on the requirements regarding the minimum embedded length of monopiles

Yu Shu Kuo, Martin Achmus, Khalid Abdel-Rahman

Research output: Chapter in Book/Report/Conference proceedingConference contribution

2 Citations (Scopus)

Abstract

Monopiles are open-ended steel pipe piles with diameters of usually 3 to 5m, which are used as foundation structures for offshore wind energy towers. Such foundations are subject to intensive cyclic horizontal loading due to wind and wave loads. In the practical design different requirements regarding the minimum embedded pile length are used in order to limit the lateral deformation under static and in particular cyclic loads. Such are the "critical length", "vertical-tangent" and "zero-toe-kick" criteria. For piles of very large diameter and thus high stiffness like monopiles these criteria lead to very large and hardly realistic required lengths. In this study, the different design criteria are compared with respect to piles of very large diameter. By means of the stiffness degradation method, a method which makes the determination of displacement accumulation with cyclic loading possible, the different criteria are assessed. With that, the suitability of adopting the mentioned design criteria for monopile foundations is discussed.

Original languageEnglish
Title of host publicationDeep Foundations and Geotechnical In Situ Testing - Proceedings of the 2010 GeoShanghai International Conference
Pages315-324
Number of pages10
Edition205 GSP
DOIs
Publication statusPublished - 2010 Sep 6
Event2010 GeoShanghai International Conference - Deep Foundations and Geotechnical In Situ Testing - Shanghai, China
Duration: 2010 Jun 32010 Jun 5

Publication series

NameGeotechnical Special Publication
Number205 GSP
ISSN (Print)0895-0563

Other

Other2010 GeoShanghai International Conference - Deep Foundations and Geotechnical In Situ Testing
CountryChina
CityShanghai
Period10-06-0310-06-05

All Science Journal Classification (ASJC) codes

  • Civil and Structural Engineering
  • Architecture
  • Building and Construction
  • Geotechnical Engineering and Engineering Geology

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  • Cite this

    Kuo, Y. S., Achmus, M., & Abdel-Rahman, K. (2010). Investigation on the requirements regarding the minimum embedded length of monopiles. In Deep Foundations and Geotechnical In Situ Testing - Proceedings of the 2010 GeoShanghai International Conference (205 GSP ed., pp. 315-324). (Geotechnical Special Publication; No. 205 GSP). https://doi.org/10.1061/41106(379)40