The Effects of Induced Anisotropy on Seismic Stability of Clayey Slopes: Numerical Study
Abstract
Abstract Induced anisotropy is an important characteristic of soils under dynamic loadings. In this paper, the effects of induced anisotropy on seismic slope stability have been investigated and the results of analyzing seismic slope stability with anisotropic SANICLAY (Simple ANIsotropic CLAY) model and isotropic Modified Cam Clay model have been compared and discussed. Considering the results of analyzing seismic slope stability with and without anisotropy (induced anisotropy), the effects of anisotropy on mechanical properties of the slope have been revealed. The analyses indicate that induced anisotropy causes increasing shear stress, displacement and sliding surface, while decreasing yield surface and induces more non-uniform bulk and shear moduli in various points of the slope. Results also demonstrate that neglecting anisotropy is an oversimplification of soil behavior, indicating that considering anisotropy is necessary to have an appropriate precision in the engineering analyses and applications.
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