Rigid Facing Field Tests on the Facing of Reinforced Soil Retaining Walls

概要

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Reinforced soil retaining walls with rigid facing are built by short reinforcements and cast-in-place concrete, and has already a number of actual construction results as railway embankments. Major limits of the construction method are: (1) the ratio of manual work is high, such as production, hand tamming and piling of gabions, and (2) the formwork of the facing requires much labor. Then, we used first an L-shaped welded wire net as a form-anchor of the formwork of the facing in place of gabions. In order to evaluate the practicality, we performed lateral pressure measuring tests at the time of placing concrete, and pull-out tests of a pre-support material which used the L-shaped welded wire net. In this paper, the practical performance is examined as a form-anchor of a pre-support material based on the field tests. Consequently, it has been confirmed that a lateral pressure approximately equal to water pressure acts temporarily and partially when concrete is cast, and that a pre-support material has a pull-out resistance to withstand the lateral pressure.
国際ジオシンセティックス学会日本支部の論文