Liquefaction-induced settlement of shallow foundations is the result of bearing capacity failure in undrained conditions and sedimentary settlement during the post-liquefaction process. The bearing capacity of a shallow foundation is highly dependent on the size and dimensions of its footprint. In addition, the reduction in shear strength in liquefiable soil, a key parameter for estimating bearing capacity, depends on the excess pore water pressure generated during an earthquake. This study aims to investigate the impact of earthquake motion on the extent of liquefaction-induced settlement in shallow foundations. A parametric study was conducted by varying the input earthquake motions in a three-dimensional response history analysis to directly consider the interaction between the soil and superstructures. The numerical analysis model constructed for the parametric study was rigorously calibrated using a reference dynamic centrifuge test in a prototype scale. The effects of the horizontal boundary and drainage conditions in the numerical model were closely examined during calibration. The parametric study results indicate that the intensity measures of an earthquake, which quantify the energy associated with the number of reversals, exhibit a close correlation with the resulting liquefaction-induced settlement as opposed to other conventional earthquake motion parameters, such as peak acceleration, magnitude, and frequency.


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    Titel :

    Effect of Strong Motion on Liquefaction-Induced Settlement of Shallow Foundations using 3D Numerical Analysis


    Weitere Titelangaben:

    KSCE J Civ Eng


    Beteiligte:
    Lee, Jin-sun (Autor:in) / Lee, Sang-un (Autor:in) / Ko, Kil-Wan (Autor:in)

    Erschienen in:

    Erscheinungsdatum :

    01.08.2024


    Format / Umfang :

    13 pages




    Medientyp :

    Aufsatz (Zeitschrift)


    Format :

    Elektronische Ressource


    Sprache :

    Englisch





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