Vertical Dynamic Stiffness of Offshore Foundations

Chiara Latini, Michele Cisternino, Varvara Zania

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    Abstract

    Nowadays, pile and suction caisson foundations are widely used to support offshore structures which are subjected to vertical dynamic loads. The dynamic soil-structure interaction of floating foundations (foundations embedded in a soil layer whose height is greater than the foundation length) is investigated by numerical analyses of representative finite element models. The 3D numerical model is compared and validated with existing analytical solutions. A parametric study is carried out analyzing the effect of the slenderness ratio Hp/d and the height and the stiffness of the soil layer on the dynamic stiffness and damping.
    Original languageEnglish
    Title of host publicationProceedings of the 26th International Ocean and Polar Engineering Conference
    EditorsJin S. Chung, Michael Muskulus, Ted Kokkinis, Alan M. Wang
    PublisherInternational Society of Offshore & Polar Engineers
    Publication date2016
    Pages775-780
    ISBN (Print)9781880653883
    Publication statusPublished - 2016
    Event26th International Ocean and Polar Engineering Conference (ISOPE 2016) - Rhodes, Greece
    Duration: 26 Jun 20162 Jul 2016
    Conference number: 26

    Conference

    Conference26th International Ocean and Polar Engineering Conference (ISOPE 2016)
    Number26
    Country/TerritoryGreece
    CityRhodes
    Period26/06/201602/07/2016
    SeriesProceedings of the International Offshore and Polar Engineering Conference
    ISSN1098-6189

    Keywords

    • Soil-structure interaction
    • Dynamic stiffness
    • Damping; floating foundations
    • Numerical modelling
    • Elastodynamic analytical solution

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