Drift of Piles subjected to cyclic lateral loading from a varying direction: System vs. Soil element behavior

C. Rudolph, J. Grabe, Britta Bienen

    Research output: Chapter in Book/Conference paperConference paper

    Abstract

    Copyright © 2014 by ASME. Offshore monopiles are usually designed using the p-y method for cyclic loading. While the method works for static loading, it was not developed for high numbers of cycles. Since the turbines are highly sensitive towards tilting, cyclic loading must be considered. The static results should therefore be combined with results from cyclic model tests with a high number of cycles to account for the accumulation of displacement or rotation during the lifetime of these structures. These model tests can underestimate the accumulation, however, as it has recently been shown that a change of loading direction can increase the accumulation considerably. These results have been verified using small scale modeling and centrifuge testing. The results from modeling the full problem of a laterally loaded pile are compared here with results from cyclic simple shear tests with a change of shearing direction during the cyclic loading. For these tests, a newly developed apparatus is used. This allows further insight into the question how a soil can "retain a memory" of its loading history.
    Original languageEnglish
    Title of host publicationProceedings of the International Conference on Ocean, Offshore and Arctic Engineering - OMAE
    Place of PublicationUSA
    PublisherASME International
    Number of pages7
    Volume3
    ISBN (Electronic)9780791845411
    DOIs
    Publication statusPublished - 2014
    EventASME 2014 33rd International Conference on Ocean, Offshore and Arctic Engineering, OMAE 2014 - San Francisco, United States
    Duration: 8 Jun 201413 Jun 2014

    Publication series

    NameASME Proceedings
    PublisherThe American Society of Mechanical Engineers
    Volume3

    Conference

    ConferenceASME 2014 33rd International Conference on Ocean, Offshore and Arctic Engineering, OMAE 2014
    CountryUnited States
    CitySan Francisco
    Period8/06/1413/06/14

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