Abstract
The dynamic elasto-plastic finite element method is used to simulate an earthquake-induced catastrophic landslide that occurred during the 2011 Great Tohoku and Kanto Earthquake in Japan. In the analysis, a strain-softening constitutive model for sensitive clays originating from weathered pumice is applied, where the material parameters of the strain-softening materials have been determined based on the results of a series of laboratory tests involving undisturbed samples. The observed phenomena such as a long-distance traveling failure triggered by degradation of the apparent shear strength of sensitive materials in the slope are appropriately simulated by the analysis.
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