One-dimensional Consolidation of Saturated Clays Considering Initial Hydraulic Gradient

Terzaghi's one-dimensional consolidation theory is modified based on the modified non-Darcy seepage equation considering the initial hydraulic gradient,and solved by using the finite volume method in this paper.The analytical results indicate that,for the soil with the initial hydraulic gradient greater than zero,the rate of consolidation is less than that by applying Terzaghi's consolidation theory,and the initial hydraulic gradient,the thickness of the layer and the ground pressure,besides the consolidation coefficient,also play important roles in the process of consolidation.In addition,it is validated that there exists some residual pore pressure which cannot be completely dissipated in the soil layer at the end of primary consolidation.