Title

Consolidation behaviour of a cylindrical soil layer subjected to nonuniform porewater pressure distribution

RIS ID

89279

Publication Details

Ganesalingam, D., Read, W. & Sivakugan, N. (2013). Consolidation behaviour of a cylindrical soil layer subjected to nonuniform porewater pressure distribution. International Journal of Geomechanics, 13 (5), 665-671.

Abstract

Nonuniform, initial, excess pore-water pressure distributions in the horizontal direction will have a different impact on the consolidation behavior of the soil layer, when compared with the uniform pore-water pressure distributions discussed in the literature. In the current study, various practical instances in which the nonuniform, axisymmetric, horizontal distributions of pore-water pressure occur are identified. The influence of these distribution patterns on the consolidation response of a cylindrical soil layer draining only at its peripheral face is analyzed analytically using a simple series solution method and by finite-element analysis using PLAXIS. From the Uavg-T curves and pore-water pressure isochrones developed, it is observed that the uniform pore-water pressure assumption overestimates the degree of consolidation achieved for various pore-water pressure distribution conditions and important information about pore-water pressure redistribution is overlooked. Incorporating appropriate initial pore-water pressure distribution will enable realistic estimates of the degree of consolidation to be made.

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