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  • On limiting force profile, slip depth and response of lateral piles

    Author(s)
    Guo, Wei Dong
    Griffith University Author(s)
    Guo, Wei Dong D.
    Year published
    2006
    Metadata
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    Abstract
    A wealth of numerical analyses have been fulfilled for lateral piles using finite difference, boundary element, and finite element methods, etc. The essence, especially for a free-head pile is to simulate the mobilization of the maximum (limiting) force along the pile. This paper presents new closed-form solutions for a free-head pile embedded in an elastic-plastic, non-homogeneous soil by simulating pile-soil interaction using a series of springs distributed along the pile shaft. The stiffness of the spring is theoretically related to soil modulus, pile-soil relative stiffness, and loading properties; and the limiting force ...
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    A wealth of numerical analyses have been fulfilled for lateral piles using finite difference, boundary element, and finite element methods, etc. The essence, especially for a free-head pile is to simulate the mobilization of the maximum (limiting) force along the pile. This paper presents new closed-form solutions for a free-head pile embedded in an elastic-plastic, non-homogeneous soil by simulating pile-soil interaction using a series of springs distributed along the pile shaft. The stiffness of the spring is theoretically related to soil modulus, pile-soil relative stiffness, and loading properties; and the limiting force is catered for by a new generic expression. The solutions permit non-linear response of the pile to be readily estimated right up to failure. They compare well with continuum-based 3-D finite element analysis of a pile embedded in stratified soils, irrespective of whether limiting force (slip) is progressively mobilised downwards as the solutions assume or not. Presented in explicit forms, the solutions allow the dominant limiting force profile (LFP) to be back-estimated against measured data, and may be used as a boundary element for simulating beam-soil interaction under lateral resistance. Ranges of input parameters are provided, in light of predictions carried out to date against 62 tested piles in clay and sand. Finally, study on three typical piles is presented to elaborate the calculation procedure.
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    Journal Title
    Computers and Geotechnics
    Volume
    33
    Issue
    1
    DOI
    https://doi.org/10.1016/j.compgeo.2006.02.001
    Subject
    Civil Engineering
    Resources Engineering and Extractive Metallurgy
    Interdisciplinary Engineering
    Publication URI
    http://hdl.handle.net/10072/14473
    Collection
    • Journal articles

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