Finite Element Simulation for An Earthquake-Induced Landslide Considering Strain-Softening Characteristics of Sensitive Clayey Loam
Landslide with fluid-like mass movement is one of the typical features within the observed slope damages due to The East Japan Great Earthquake. In many slopes mainly composed of sensitive clayey loam with higher water content in northern Kanto district, the sudden strength degradation of the soil under the strong earthquake motion caused a long-distance travelling failure. In this study, a case of such catastrophic phenomena, at Okanouchi in Shirakawa-city, is simulated by the dynamic elasto-plastic finite element method where the cyclic loading characteristics of the sensitive clayey loam are numerically formulated by the UW softening model. By adopting the appropriate parameters based on the laboratory element tests with the undisturbed specimens, the obtained analytical results agreed with the observed phenomena.
KeywordsSlip Surface Excess Pore Water Pressure Undrained Shear Strength Cyclic Softening Earthquake Motion
We really thank Dr. Aly Ahmed (Visiting Scholar from Egypt, Gunma University) who has reviewed this paper as a native English speaker, correcting grammatical mistakes and providing us better ways of expression in English writing.
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