One way to conduct open-cut excavation is to use of the Deep Mixing Method to construct self-supported earth retaining walls. Although the authors have used gravity retaining walls in the past, this method is not always appropriate because thereis sometimes insufficient space to construct a wall with the necessary thickness. In such cases, it is necessary to incorporate reinforce material to make the wall thinner, and to use self-supporting walls with enhanced bending stiffness. The researchreported in this paper focuses on the deformation and failure characterisrics of reinforced retaining walls and the applicability of structural calculations for reinforced concrete structures (Architectural Institute of Japan, 1991) to the design ofreinforced self-retaining walls. Specifically, centrifuge model tests using a self-retaining wall model were conducted to determine whether or not structural calculations for reinforced concrete structures could be applied, and in-situ horizontal loadingtests were further conducted to determine the applicability of structural calculations.
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