Stiffness matching of model reinforced concrete for centrifuge modelling of soil-structure interaction

A. H. Al-Defae, J. A. Knappett (Lead / Corresponding author)

    Research output: Chapter in Book/Report/Conference proceedingConference contribution

    5 Citations (Scopus)

    Abstract

    In this paper, three dynamic centrifuge tests were conducted on a pile-reinforced cohe-sionless slope at 1: 50 scale to demonstrate that a recently developed model Reinforced Concrete (RC) pile can model prototype Soil-Structure Interaction (SSI) correctly. Two different pile models were used, namely: (i) model RC piles, representative of 500 mm square precast piles and (ii) 'elastic' piles, fabricated from aluminium-alloy to match the elastic bending stiffness of the model RC piles. Two of the models used RC piles and the third used 'elastic' instrumented piles. In each model, the piles were installed in a row, midway between the toe and crest, at a normalised spacing ratio of 3.5. From the induced bending moments measured in the elastic piles and the measured slope settlements it is shown that elastic soil-pile interaction is replicated accurately by the model RC piles, so long as the induced bending moments are below the moment capacity of the model RC section. It is therefore verified that the elastic behaviour of the model concrete translates to prototype scale.

    Original languageEnglish
    Title of host publicationPhysical Modelling in Geotechnics - Proceedings of the 8th International Conference on Physical Modelling in Geotechnics 2014, ICPMG 2014
    EditorsChristophe Gaudin, David White
    PublisherCRC Press
    Pages1067-1072
    Number of pages6
    Volume2
    ISBN (Print)9781138001527
    DOIs
    Publication statusPublished - 14 Jan 2014
    Event8th International Conference on Physical Modelling in Geotechnics, ICPMG 2014 - Perth, WA, Australia
    Duration: 14 Jan 201417 Jan 2014

    Conference

    Conference8th International Conference on Physical Modelling in Geotechnics, ICPMG 2014
    CountryAustralia
    CityPerth, WA
    Period14/01/1417/01/14

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  • Research Output

    • 5 Citations
    • 1 Conference contribution

    Variability of small scale model reinforced concrete and implications for geotechnical centrifuge testing

    Knappett, J., Brown, M., Shields, L., Al-Defae, A. H. & Loli, M., 24 Oct 2018, Physical Modelling in Geotechnics: Proceedings of the 9th International Conference on Physical Modelling in Geotechnics (ICPMG 2018), July 17-20, 2018, London, United Kingdom. McNamara, A., Divall, S., Goodey, R., Taylor, N., Stallebrass, S. & Panchal, J. (eds.). 1 ed. CRC Press-Taylor & Francis Group, p. 241-246

    Research output: Chapter in Book/Report/Conference proceedingConference contribution

    Open Access
    File
  • 1 Citation (Scopus)
    118 Downloads (Pure)

    Student Theses

    Seismic performance of pile-reinforced slopes

    Author: Al-Defae, A. H. H., 2013

    Supervisor: Knappett, J. (Supervisor)

    Student thesis: Doctoral ThesisDoctor of Philosophy

    File

    Cite this

    Al-Defae, A. H., & Knappett, J. A. (2014). Stiffness matching of model reinforced concrete for centrifuge modelling of soil-structure interaction. In C. Gaudin, & D. White (Eds.), Physical Modelling in Geotechnics - Proceedings of the 8th International Conference on Physical Modelling in Geotechnics 2014, ICPMG 2014 (Vol. 2, pp. 1067-1072). CRC Press. https://doi.org/10.1201/b16200-151