Quantifying the increase in lateral capacity of monopiles in sand due to cyclic loading

G. Nicolai, L. B. Ibsen, C. D. O'Loughlin, D. J. White

    Research output: Contribution to journalArticlepeer-review

    31 Citations (Scopus)

    Abstract

    The contribution of this paper is a simple method to predict the higher moment capacity of a monopile in dense silica sand after drained cyclic loading. The method accounts for the effect of cyclic load magnitude, symmetry and number of cycles, and is calibrated against a series of single gravity and centrifuge tests. The agreement between the model test data and the predictions is typically within 2%. Application of the method shows that the moment capacity of a monopile in dense sand, for the conditions tested here, is up to 36% higher after cycling. This contrasts with a 10% reduction that would be predicted using the existing industry standard p-y approach for cyclic loading in sand.

    Original languageEnglish
    Pages (from-to)245-252
    Number of pages8
    JournalGeotechnique Letters
    Volume7
    Issue number3
    DOIs
    Publication statusPublished - 27 Jun 2017

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