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摘要
In view of the slope stability evaluation error caused by ignoring the nonhomogeneity and anisotropy of soil,the theory of limit analysis coupled with the strength reduction method is applied,and the analytical formula for the stability of the slopes with cracks at tunnel entrance considering nonhomogeneity and anisotropy is derived. The influence of nonhomogeneity and anisotropy on the stability coefficient of slopes, the crack position of the slopes, the collapse range of tunnel vault and the safety factor are explored. The results demonstrate that the greater the crack depth and slope angle,the smaller the stability coefficient of the slope. The larger the nonhomogeneity coefficient and the smaller the anisotropy coefficient are, the larger the critical height of the slope is. When the nonhomogeneity coefficient and anisotropy coefficient increase,the crack position gets farther away from the edge of the top of the slope, which means the collapse range of the tunnel vault becomes greater. The increase of the coefficient of nonhomogeneity is beneficial to the stability of the slope, while the increase of the coefficient of anisotropy will lead to the instability of the slope. ? 2023 Editorial Office of Chinese Journal of Computational Mechanics.
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