The pressure distribution along stone columns in soft clay under consolidation and foundation loading

Vinayagamoothy Sivakumar, D.K.N.M. Jeludine, Alan Bell, D.T. Glynn, Pauline MacKinnon

    Research output: Contribution to journalArticlepeer-review

    41 Citations (Scopus)

    Abstract

    The mechanism whereby foundation loading is transmitted through the column has received little attention from researchers. This paper reports on some interesting findings obtained from a laboratory-based model study in respect of this issue. The model tests were carried out on samples of soft clay, 300 mm in diameter and 400 mm high. The samples were reinforced with fully penetrating stone columns, of three different diameters, made of crushed basalt. Four pressure cells were located along each stone column. The 60 mm diameter footing used in the model was supported on a clay bed reinforced with a stone column and subjected to foundation loading under drained conditions. The results show that the dissipation of excess pore water pressure developed during the initial application of total stresses, when the foundation was subjected to no loading, generated considerable stresses within the column, and that this was directly attributable to the development of negative skin friction. The pressure distributions in the column during foundation loading showed some complex behaviour.
    Original languageEnglish
    Pages (from-to)613-620
    Number of pages8
    JournalGéotechnique
    Volume61
    Issue number7
    DOIs
    Publication statusPublished - Feb 2011

    Keywords

    • footings/foundations
    • ground improvement
    • model tests
    • reinforced soils
    • settlement
    • soil/structure interaction

    ASJC Scopus subject areas

    • Earth and Planetary Sciences (miscellaneous)
    • Geotechnical Engineering and Engineering Geology

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