Self-boring pressuremeter tests at the National Field Testing Facility, Ballina NSW

F. M. Gaone, J. Doherty, S. Gourvenec

    Research output: Chapter in Book/Conference paperConference paperpeer-review

    7 Citations (Scopus)

    Abstract

    Accurate prediction of foundation settlement is increasingly important in onshore and offshore geotechnical design. Reducing land space requires construction on non-ideal soils or above buried infrastructure onshore while offshore shallow foundations require optimization of size to facilitate installation while ensuring tolerances on attached rigid infrastructure such as pipelines are not compromised. The accuracy of settlement predictions depends on the accuracy of the measured soil stiffness, which is non-linear and dependent on stress level, stress path and stress history. Consequently, the quality of a settlement prediction is inherently tied to the relevance of the testing method that is used to derive the stiffness values. The self-boring pressuremeter (SBPM) enables the non-linear stress-strain response to be captured at different in-situ stress levels (depths) over a large range of cavity strain, and derivation of undrained strength, stiffness and creep characteristics. This paper summarizes a program of pressuremeter tests conducted in a soft clay deposit in Ballina, NSW, Australia.

    Original languageEnglish
    Title of host publicationGeotechnical and Geophysical Site Characterisation, ISC'5
    EditorsBarry M. Lehane, Hugo E. Acosta-Martínez, Richard Kelly
    PublisherAustralian Geomechanics Society
    Pages761-765
    Number of pages5
    Volume1
    ISBN (Electronic)978-0-9946261-1-0
    Publication statusPublished - 2016
    Event5th International Conference on Geotechnical and Geophysical Site Characterisation: In pursuit of best practice - Gold coast, Gold Coast, Australia
    Duration: 5 Sept 20169 Sept 2016

    Conference

    Conference5th International Conference on Geotechnical and Geophysical Site Characterisation
    Abbreviated titleISC'5
    Country/TerritoryAustralia
    CityGold Coast
    Period5/09/169/09/16

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