浸水による盛土の沈下と施工管理規準に関する基礎的研究

概要

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The importance of the problem of settlement of embankment of partly saturated and low density soil due to submergence with water is evidenced by a lot of failure in foundation of banking structure. This problem is characteristic of special soil like weathered mudstone, but is not restricted to this type since any relatively unsaturated soil with a comparatively low density and high void ratio is susceptible. In this paper, the characteristics of settlement of compacted fine clayey soil submerged with water were investigated, and execution management in banking was dicussed on the base of soil behaviour due to wetting. As a result of this experimental study, it became clear that the compacted and partly saturated fine clayey soil was settled by submergence with water in same manner as special soil like weathered mudstone. The difference of the compression behaviour of partly saturated soil from those of saturated soil was explained from the mechanisum for slaking and collapse. When the embankment constructed from the partly saturated soil with comparatively low density was submerged with water, a estimation method of settlement was studied and a determination method of the standard of the execution management for banking structure was proposed taking account of settlement.
神戸大学の論文