Research on Limit Equilibrium Analysis Method of Loess Slope Considering Cross-anisotropy

By analyzing the relationship between the sliding surface and the principal stress angle in different stress spatial domains, it is assumed that the friction angles on the sliding surface changes in cosine under axisymmetric compression. Put forward A limit equilibrium analysis idea of loess slope considering cross-anisotropic. The equations for determining the safety factor of the Swedish strip method, simplified Bishop method and Spencer method considering the cross-anisotropic are derived. It is verified by an example that this method not only improves the accuracy of slope safety factor calculation, but also conforms to the actual engineering of the loess high slope. Considering the soil anisotropy guidance project for the stability of the actual loess high slopes, it has important theoretical and practical significance.