Model Tests on Soil Movement during the Installation of Piles in Transparent Granular Soil
2017
AbstractThis paper presents model tests on the displacement characteristics of flat-ended piles, pipe piles, and piles with a cone tip of 45o in a transparent granular soil. The testing setup consisted of transparent granular soil, a penetration device, a linear laser, a charge-coupled device (CCD) camera, and an optical platform. The transparent granular soil used in this study were made of fused quartz and a pore fluid with the same reflective index. The pore fluid was a mixture of n-paraffin C12 and food-grade White Oil 15. The positions of the granular-soil particles were registered by laser speckles, and the internal displacements of the particles during penetration were recorded by the CCD camera. The horizontal and vertical displacements of the granular soil and the zone of influence of penetration of different piles were determined by comparing the images of the granular soils before and after penetrations. On the basis of these data, the displacement field and sheltering effect of different piles...
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