Research On Bearing Capacity Of Non-homogeneous And Anisotropic Foundation Adjacent To Slope

The foundation adjacent to slope has widely appeared in the engineering construction.Different from the horizontal foundation,the bearing capacity of slope foundation is significantly affected by the slope,and its safety must be guaranteed in engineering.At present,the theoretical calculation of foundation bearing capacity mostly adopts limit equilibrium theory,slip line method,limit analysis method and finite element method.Although there are many methods,the research achievements in the field of slope foundation bearing capacity are relatively scarce,especially when taking non-homogeneous and anisotropic,seismic force into consideration,the current norms also have not given a clear answer.Therefore,the subject around the non-homogeneous and anisotropic,seismic forces under the bearing capacity of foundation adjacent to slope has practical significance.By using upper bound limit analysis,the bearing capacity of slope foundation is studied by using the unilateral slope failure mode,and the ultimate bearing capacity and bearing capacity coefficient chart were obtained.The main contents are as follows:(1)The basic assumptions of failure modes were discussed.Based on the limit analysis method and slip-line method,more reasonable boundary conditions are proposed.Based on this,the mobile permissible velocity field of failure mode was established,and the formula of bearing capacity and bearing capacity coefficient was deduced.Furthermore,the solution was promoted to solve the horizontal foundation problem.(2)The action mechanism of non-homogeneous and anisotropic on the bearing capacity of foundation was analyzed,and the corresponding parameters were introduced into the calculation of internal energy dissipation,and the solution of bearing capacity coefficient was obtained.Through the Matlab program,the minimum upper bound solution of the bearing capacity was obtained by optimization.After comparative analysis,the rationality and correctness of the mechanism,calculation method and procedure of this paper were validated,and the influence of non-homogeneous and anisotropic on the the ultimate bearing capacity was discussed.(3)The pseudo-static method was used to analyze the change of bearing capacity under earthquake action.In the external force power calculation,the horizontal and vertical seismic force coefficient were introduced,and the corresponding bearing capacity and bearing capacity coefficient formula was obtained.After the optimization process,the ultimate bearing capacity and bearing capacity coefficient under earthquake were obtained,and the results were compared with the existing literature.(4)After a comprehensive analysis of the non-homogeneous and anisotropic with seismic forces,the ultimate bearing capacity of the calculation tables were given,and the variation rules under different parameters were analyzed.