Liquefaction resistance of a silty sand deposit subjected to preshaking followed by extensive liquefaction

W. El-Sekelly, Tarek Abdoun, R. Dobry

    Research output: Contribution to journalArticle

    Abstract

    The effect of extensive liquefaction on the liquefaction resistance of heavily preshaken saturated silty sand is studied using a centrifuge experiment. The base of a 6-m homogeneous deposit was subjected to a total of 91 shaking events of different horizontal base accelerations and durations. Three event types were used in alternating patterns: mild preshaking Events A, stronger preshaking Events B, and strong liquefying Events C. The experiment was divided in two stages. In Stage One, reported in a previous publication, 66 preshaking Events A and B, were applied. In Stage Two, which is the focus of this paper, 25 additional shakings were applied which included two Events C in addition to continuing the same pattern of Events A and B. Stage One resulted in a significant increase in liquefaction resistance of the deposit. In Stage Two, extensive liquefaction produced by Events C resulted in a dramatic immediate reduction in liquefaction resistance of the deposit to a level comparable to that before preshaking. These findings are consistent with other reported field observations and laboratory results.

    Original languageEnglish (US)
    Article number04015101-1
    JournalJournal of Geotechnical and Geoenvironmental Engineering
    Volume142
    Issue number4
    DOIs
    StatePublished - Apr 1 2016

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    Liquefaction
    liquefaction
    Sand
    Deposits
    sand
    Centrifuges
    centrifuge
    experiment
    Experiments

    ASJC Scopus subject areas

    • Environmental Science(all)
    • Geotechnical Engineering and Engineering Geology

    Cite this

    Liquefaction resistance of a silty sand deposit subjected to preshaking followed by extensive liquefaction. / El-Sekelly, W.; Abdoun, Tarek; Dobry, R.

    In: Journal of Geotechnical and Geoenvironmental Engineering, Vol. 142, No. 4, 04015101-1, 01.04.2016.

    Research output: Contribution to journalArticle

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