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One-dimensional consolidation theories for layered soil have been re-examined. Coupled (settlement and excess pore pressure), uncoupled (excess pore pressure only) and the classical Terzaghi equation are solved by the finite-element method. By accounting only for changes in the coefficient of consolidation (cv), the classical Terzaghi approach is unable to satisfy the flow continuity conditions at the interface between layers.
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Huang et al. (2010) studied this question.
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