Abstract
An extensive experimental study has been carried out to study the seismic performance of footings on stone columns treated dry sand beds. Physical models have been prepared in a laminar shear box of size 1 m3 on the shaking table which has a single degree of freedom motion for representing horizontal shaking action under seismic vibrations. Effect of the configuration of stone columns, aspect ratio of footing, relative density of sand bed, frequency and peak ground acceleration (PGA) of cyclic input motion on vertical settlement of footing has been studied. Optimum length of stone columns has been found to lie between 13–16 times the diameter. Direction of shaking perpendicular to length of footing has been found to be more critical. Effect of aspect ratio has been found to be more pronounced at larger PGA. Influence of the frequency on response of footings has also been quantified.
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The financial support by IIT Roorkee — NBCC Joint R&D Center on “Sustainable Civil Infrastructure” in carrying out this work is highly acknowledged.
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Maheshwari, P., Kumar Yadav, N. & Sahoo, J.P. Seismic Performance of Footings on Stone Columns Treated Dry Sand Beds. KSCE J Civ Eng 24, 3230–3236 (2020). https://doi.org/10.1007/s12205-020-2319-9
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DOI: https://doi.org/10.1007/s12205-020-2319-9