Anchor sharing in sands: Centrifuge modelling and soil element testing to characterise multi-directional loadings

Manuel Herduin, Christophe Gaudin, Lars Johanning

    Research output: Chapter in Book/Conference paperConference paper

    3 Citations (Scopus)

    Abstract

    Offshore foundations are typically designed to resist mooring loads coming from a single direction. This paper provides some insights into the geotechnical challenges associated with anchor sharing (i.e. where mooring loads are coming from multiple directions to one anchor) for Offshore Renewable Energy (ORE) applications. Firstly, the multidirectional mooring load conditions on shared anchors are characterised for cases with one, two and three mooring lines connections. Secondly, multi-directional loadings applied on a caisson foundation in a geotechnical centrifuge facility showed large capacity reduction and large displacement of the foundation at large loading angle. Thirdly, multi-directional simple shear tests have showed that volumetric contraction increases as the degree of shear stress reversal increases. Lastly, the results from the soil element tests are brought into discussion with the physical modelling results to identify the foundation's response to multi-directional loading.

    Original languageEnglish
    Title of host publicationOffshore Geotechnics; Honoring Symposium for Professor Bernard Molin on Marine and Offshore Hydrodynamics
    PublisherThe American Society of Mechanical Engineers (ASME)
    Number of pages9
    Volume9
    ISBN (Electronic)9780791851302
    DOIs
    Publication statusPublished - 1 Jan 2018
    EventASME 2018 37th International Conference on Ocean, Offshore and Arctic Engineering, OMAE 2018 - Madrid Marriott Auditorium Hotel & Conference Centre, Madrid, Spain
    Duration: 17 Jun 201822 Jun 2018
    https://www.asme.org/events/omae

    Conference

    ConferenceASME 2018 37th International Conference on Ocean, Offshore and Arctic Engineering, OMAE 2018
    Abbreviated titleOMAE 2018
    CountrySpain
    CityMadrid
    Period17/06/1822/06/18
    Internet address

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