Consolidation of Clay by Sand Drain under Time-Dependent Loading
Publication: Journal of Geotechnical and Geoenvironmental Engineering
Volume 124, Issue 1
Abstract
The mathematical theory and physical laws of one-dimensional consolidation of clayey soils are well-known. Sand drains accelerate the consolidation process. Several analytical and experimental studies have already reported on sand drain consolidation of clayey soils. However, the literature does not contain a nonlinear theory of sand drain consolidation under time-dependent loading that can take into account any effective stress/void ratio/permeability variations. A generalized governing equation, capable of yielding a large class of analytical solutions for these variations is derived in this paper. Closed-form solutions are presented for the variation of pore water pressure with a time factor and load increment ratio under time-dependent loading. The analytical formulation is validated by comparing the solution with the standard results available in the literature for instantaneous loading, constant permeability, and constant compressibility.
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References
1.
Barron, R. A.(1948). “Consolidation of fine grained soils by drain wells.”Trans. ASCE, 113, 718–754.
2.
Basak, P., and Madhav, M. R.(1970). “Analytical solution of sand drain problems.”J. Geotech. Engrg. Div., ASCE, 104(1), 129–135.
3.
Schiffman, R. L.(1958). “Consolidation of soil under time-dependent loading and varying permeability.”Proc. Hwy. Res. Board, 37, 584–617.
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Copyright © 1998 American Society of Civil Engineers.
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Published online: Jan 1, 1998
Published in print: Jan 1998
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