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  • Behavior of Large-Diameter Rock-Socketed Piles Under Lateral Loads

    Author(s)
    Chen, J-J
    Wang, J-H
    Ke, X
    Jeng, D-S
    Griffith University Author(s)
    Jeng, Dong-Sheng
    Year published
    2011
    Metadata
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    Abstract
    Large-diameter rock-socketed piles have been extensively used as the foundation of platforms and other offshore installations. In this paper, the behavior of large-diameter rock-socketed CFST (concrete-filled steel tube) piles under lateral loads is studied, based on field tests and numerical analysis. The CFST piles are 2800 mm in diameter and 40 m in length, with 5.2 m socketed into the rock. The horizontal capacity and deformation of large-diameter rock-socketed piles are analyzed from the measured displacements and internal forces of piles. The interactive behavior of pile-rock and the influence of backfilled sand on ...
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    Large-diameter rock-socketed piles have been extensively used as the foundation of platforms and other offshore installations. In this paper, the behavior of large-diameter rock-socketed CFST (concrete-filled steel tube) piles under lateral loads is studied, based on field tests and numerical analysis. The CFST piles are 2800 mm in diameter and 40 m in length, with 5.2 m socketed into the rock. The horizontal capacity and deformation of large-diameter rock-socketed piles are analyzed from the measured displacements and internal forces of piles. The interactive behavior of pile-rock and the influence of backfilled sand on horizontal capacity are also discussed. Using the Finite Element Method (FEM) considering the properties of the pile-soil interface, the test results are simulated numerically. This shows that the stress concentration effect in the region near the bottom of the steel tube should be considered in the design, because the socketed part of piles bears most of the lateral load. The steel tube and backfilled sand are both effective in limiting the pile displacement under the working load. Parametric analysis shows there is an optional socketed length to improve the bearing capacity of piles.
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    Journal Title
    International Journal of Offshore and Polar Engineering
    Volume
    21
    Issue
    4
    Publisher URI
    http://www.isope.org/publications/journals/journalDecember11.htm
    Copyright Statement
    Self-archiving of the author-manuscript version is not yet supported by this journal. Please refer to the journal link for access to the definitive, published version or contact the authors for more information.
    Subject
    Civil Geotechnical Engineering
    Civil Engineering
    Maritime Engineering
    Mechanical Engineering
    Publication URI
    http://hdl.handle.net/10072/60354
    Collection
    • Journal articles

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