Offshore pile foundations are often subjected to lateral cyclic loads due to environmental forces applied to the supported structure. Pile foundation analysis commonly includes the use of a Beam on Nonlinear Winkler Foundation (BNWF) model in which the soil reaction is related to lateral deflection through prescribed curves however this model is very sensitive to the way one considers the p-y curves for the analysis. This paper outlines a new robust BNWF model, considering nonlinear cyclic pile-soil interaction behaviour, based on the API recommended p-y cyclic curves. This model is developed using ABAQUS software and it can be easily implemented in comprehensive models for ultimate strength analysis of fixed offshore platforms. In addition to soil elasto-plastic behaviour, this model is able to capture soil strength degradation, gapping phenomenon and drag forces on the offshore piles under cyclic loadings. In a series of numerical simulations, results of this model are compared well with existing models in cyclic behaviour of offshore piles.


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    Titel :

    Simplified numerical model for analysis of offshore piles under cyclic lateral loading


    Weitere Titelangaben:

    Ein vereinfachtes numerisches Modell zur Analyse von Offshore-Pfählen unter zyklischer lateraler Last


    Beteiligte:
    Memarpour, M.M. (Autor:in) / Kimiaei, M. (Autor:in) / Shayanfar, M. (Autor:in)


    Erscheinungsdatum :

    2011


    Format / Umfang :

    6 Seiten, 11 Bilder, 4 Tabellen, 15 Quellen



    Medientyp :

    Aufsatz (Konferenz)


    Format :

    Datenträger


    Sprache :

    Englisch




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