Static and cyclic rocking on sand: Centrifuge versus reduced-scale LG experiments

P. Kokkali, I. Anastasopoulos, Tarek Abdoun, G. Gazetas

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

    Abstract

    Shallow foundations supporting bridge piers, building frames, shear walls and monuments are often subjected to extreme lateral loading such as wind in offshore environments, or strong seismic shaking. Under such loading conditions, foundations may experience a host of non-linear phenomena: sliding on and uplifting from the supporting soil or even soil failure in the form of development of ultimate bearing capacity mechanisms. This type of response is accompanied by residual settlement and rotation of the supported structural system. Nevertheless, inelastic foundation performance can provide potential benefits to the overall seismic integrity of the structure. Thanks to such non-linearities, energy dissipation at or below the foundation level may eventually limit the seismic demand on structural elements. Several theoretical and experimental studies have provided encouraging evidence to this effect. This paper has a dual objective: first, to study the behaviour of shallow foundations under vertical and lateral monotonic loading and under lateral slow cyclic loading of progressively increasing amplitude; second, to explore the differences in foundation response between reduced-scale \g and centrifuge 50g model testing. Emphasis is placed on interpreting their discrepancies by unveiling the role of scale effects. The role of soil densification due to multiple loading cycles with uplifting is also highlighted.

    Original languageEnglish (US)
    Title of host publicationGeotechnical Earthquake Engineering - Geotechnique Symposium in Print 2015
    PublisherICE Publishing
    Pages155-170
    Number of pages16
    ISBN (Electronic)9780727761491
    DOIs
    StatePublished - Jan 1 2015
    EventGeotechnique Symposium 2015 - London, United Kingdom
    Duration: Jun 15 2015 → …

    Other

    OtherGeotechnique Symposium 2015
    CountryUnited Kingdom
    CityLondon
    Period6/15/15 → …

    Fingerprint

    Centrifuges
    centrifuge
    Sand
    sand
    soil
    experiment
    Experiments
    scale effect
    pier
    cyclic loading
    monument
    energy dissipation
    theoretical study
    bearing capacity
    Soils
    nonlinearity
    sliding
    experimental study
    Bridge piers
    Shear walls

    Keywords

    • Bearing capacity
    • Centrifuge modelling
    • Footings/foundations
    • Settlement

    ASJC Scopus subject areas

    • Geotechnical Engineering and Engineering Geology

    Cite this

    Kokkali, P., Anastasopoulos, I., Abdoun, T., & Gazetas, G. (2015). Static and cyclic rocking on sand: Centrifuge versus reduced-scale LG experiments. In Geotechnical Earthquake Engineering - Geotechnique Symposium in Print 2015 (pp. 155-170). ICE Publishing. https://doi.org/10.1680/geot.14.P.064

    Static and cyclic rocking on sand : Centrifuge versus reduced-scale LG experiments. / Kokkali, P.; Anastasopoulos, I.; Abdoun, Tarek; Gazetas, G.

    Geotechnical Earthquake Engineering - Geotechnique Symposium in Print 2015. ICE Publishing, 2015. p. 155-170.

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

    Kokkali, P, Anastasopoulos, I, Abdoun, T & Gazetas, G 2015, Static and cyclic rocking on sand: Centrifuge versus reduced-scale LG experiments. in Geotechnical Earthquake Engineering - Geotechnique Symposium in Print 2015. ICE Publishing, pp. 155-170, Geotechnique Symposium 2015, London, United Kingdom, 6/15/15. https://doi.org/10.1680/geot.14.P.064
    Kokkali P, Anastasopoulos I, Abdoun T, Gazetas G. Static and cyclic rocking on sand: Centrifuge versus reduced-scale LG experiments. In Geotechnical Earthquake Engineering - Geotechnique Symposium in Print 2015. ICE Publishing. 2015. p. 155-170 https://doi.org/10.1680/geot.14.P.064
    Kokkali, P. ; Anastasopoulos, I. ; Abdoun, Tarek ; Gazetas, G. / Static and cyclic rocking on sand : Centrifuge versus reduced-scale LG experiments. Geotechnical Earthquake Engineering - Geotechnique Symposium in Print 2015. ICE Publishing, 2015. pp. 155-170
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