An elasto-viscoplastic one-dimensional consolidation model was proposed for quasi-overconsolidated clays in stress level range from the current overburden pressure to over the consolidation yield stress, followed by confirming its applicability to the long-term consolidation behavior of Pleistocene clays of Osaka Bay through numerical simulations of a series of long-term consolidation tests. Then, a series of numerical simulations was carried out to investigate the effect of drainage path length on the consolidation behavior of quasi-overconsolidated clays in stress level less than the consolidation yield stress. As the results, it was concluded that the proposed model was one of available effective techniques for predicting the long-term consolidation behavior of the quasi-overconsolidated clays.
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