Abstract
In this study, experimental analyses were carried out to investigate characteristics of slope failure by earthquakes and potential risks of secondary failure. A 1/50 scale model slopes were made of Kanto loam to simulate the shallow unsaturated soil in slopes. Seismic acceleration was applied on a shaking table in centrifuge, so that shear strain in the shallow unsaturated soil increased as the number of seismic cycles. It was found that the slopes failed as a result of accumulation of the plastic shear strain. In addition, changes in height and angle of slopes were measured in the upper remaining section after seismic failures. The potential risks of secondary failure (R v ) were analyzed using Taylor’s stability chart. It was ensured that the value of R v on the upper section decreased as the collapsed soil increased.
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References
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Mikuni, C., Tamate, S., Hori, T., Suemasa, N. (2013). Centrifuge Model Tests on Seismic Slope Failure. In: Ugai, K., Yagi, H., Wakai, A. (eds) Earthquake-Induced Landslides. Springer, Berlin, Heidelberg. https://doi.org/10.1007/978-3-642-32238-9_53
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DOI: https://doi.org/10.1007/978-3-642-32238-9_53
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