除荷-再載荷過程を含む飽和粘土の圧密特性

概要

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To predict the settlement of soft clay layers, the stress-strain-time relations for the undisturbed sample are usually observed by conducting the standard consolidation tests and the scaling laws that the strain-time relationship is converted by the H^2 relationship are used. However, in practice the scaling laws are more complex than such a simple hypothesis as H^2 relation; this problem is closely related to how creep occurs as a separate phenomenon during primary consolidation. The objective of this paper is to observe the creep deformation during primary consolidation in the loading-unloading-reloading stages. In this paper, a separate-type consolidometer is used and from the precise measurement of strain and pore pressure inside the consolidating specimens, the following results are obtained. 1) Preconsolidation duration affects the settlement in the following loading stage. 2) At the end of primary consolidation, the distributions of void ratio inside the clay layer are not uniform.
山口大学の論文