Large deformation FE analysis of end-bearing piles installing in sand

Hongliang Ma, Michael Zhou, Muhammad Hossain, Yuxia Hu

    Research output: Chapter in Book/Conference paperConference paper

    1 Citation (Scopus)

    Abstract

    Significant uncertainty exists in terms of the underlying soil failure mechanisms governing the behaviour of displacement piles in sand. In addition, the installing pile (diameter D = 0.5∼3 m) with a trapped soil wedge at the base and/or the using of a driving shoe often creates a conical tip. This resembles the geometry of finless torpedo anchor (D = 0.8∼1.2 m) and cone penetrometer (in lower scale with D = 0.035∼0.0437 m). This paper describes large deformation finite element (LDFE) analysis of the penetration of conical pile foundations in silica sand, identifying the evolving soil failure mechanisms around the object and the end bearing resistance. The results are validated against centrifuge test data, with reasonable agreement obtained. The pile tip angle and sand relative density are shown to have significant influence on the mobilised soil deformation patterns and consequent end bearing resistance. Higher penetration resistance and more proportion of vertical soil flow (concentrating adjacent to the advancing pile) are in associated with higher relative density and greater tip angle. Copyright © 2014 by the International Society of Offshore and Polar Engineers (ISOPE).
    Original languageEnglish
    Title of host publicationLarge Deformation FE Analysis of End-Bearing Piles Installing in Sand
    Place of PublicationSouth Korea
    PublisherInternational Society of Offshore and Polar Engineers
    Pages703-708
    ISBN (Print)9781880653913
    Publication statusPublished - 2014
    Event24th International Ocean and Polar Engineering Conference, ISOPE 2014 - South Korea, Busan, Korea, Republic of
    Duration: 15 Jun 201420 Jun 2014

    Conference

    Conference24th International Ocean and Polar Engineering Conference, ISOPE 2014
    Abbreviated titleISOPE 2014
    CountryKorea, Republic of
    CityBusan
    Period15/06/1420/06/14

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