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This paper presents preliminary results from four centrifuge tests, performed at the University of Colorado Boulder, to evaluate the relative influence of different mitigation mechanisms provided by dense granular columns (DGC) on the seismic performance of embankments founded on liquefiable soil deposits. The first test was designed as the baselin...
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Context 1
... DGCs with diameter = 1.75 m and a center-to-center spacing of 4.9 m (in prototype scale) were placed vertically (in a square pattern) at an elevation of 8 m above the bottom of the container, prior to finishing sand pluvation, to avoid localized densification of sand during their installation, and to keep the density of the surrounding soil well controlled and uniform within each layer. The engineering soil properties of these materials, as measured at CU, are provided in Table 1. ...