Sliding-bending failure is one of the common modes in bedding rock slopes. In this paper

we analyzed the geological origin of bedding rock slopes with slab-rent structure

and applied the theory of maximum tensile stress to the analysis of geomechanical models. According to the damage characteristics

the sliding-bending rock stratum was divided into two parts: the sliding section and the bending section. Then

the energy method

the Rayleigh-Ritz method

and the stationary value theory of total potential energy were used to simulate the equation of deflection curve approximatively. Besides

the formulae for calculating the maximum tensile stress and for the prediction model of potential failure location in bedding rock slopes with slab-rent structure were deduced based on the beam-plate theory. On this basis

the theoretical formula was programed and the approximate consistency between the theoretical prediction value and the accrual failure value was obtained through calculating the typical failure slope. Finally

the failure process of Shanyang landslide was analyzed by FLAC3 numerical simulation software and the following conclusions were drawn: (1) The variation trend of the total displacement was characterized by obvious sliding-bending variation. (2) The numerical simulation results of the maximum tensile stress and the location of the tensile plastic zone were approximately consistent with the theoretical results.