The scope of this paper is to emphasize the critical issues related to the axisymmetric and plane-strain modelling of single and group of stone columns constructed to stabilise soft soils. A simple technique based on the expansion of the column shaft was used to simulate the column installation so that the excess pore pressures during this process were calculated for a single column under axisymmetric conditions. Classical cavity expansion theory was also used for the same purpose. The group behaviour of stone columns was discussed by two-dimensional plane—strain numerical models. Plane-strain modelling of stone columns should consider the conversion of stiffness and the drainage properties of the columns and the soft soils to the plane-strain conditions. The validity of two different conversion methods based on the equivalent plane-strain stiffness and equivalent plane-strain permeability coupled with the expansion of the column shaft technique were investigated. An existing well-documented centrifuge test data were used as a reference for numerical models of axisymmetric single column and plane-strain column groups. The measured and calculated results were in good agreement for the case where the finite element model was constituted based on the equivalent plane-strain permeability. The results of this study intend to bring insight to the plane-strain modelling of a group of stone columns.


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    Titel :

    Numerical Plane-Strain Modelling of Stone Columns: Installation Process, Single and Group Column Behaviour


    Weitere Titelangaben:

    KSCE J Civ Eng


    Beteiligte:

    Erschienen in:

    Erscheinungsdatum :

    2022-08-01


    Format / Umfang :

    14 pages




    Medientyp :

    Aufsatz (Zeitschrift)


    Format :

    Elektronische Ressource


    Sprache :

    Englisch




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