For the existing calculation methods for the stabilising pile

the interaction between pile and landslide body is simplified as the determined load. However

these methods all ignore the direct dependence of the interaction on the displacement of the pile. This study developed a method

in which m-method model was employed to simulate the interaction between landslide body and pile. Meanwhile

equations were established for the piles above and below the slip surface respectively

and their expressions of displacement and internal force were also solved with power series method. Meanwhile

the bending moment and shear force at the slip surface were obtained by using deformation coordinating conditions of the upper and lower piles at the sliding surface. Hence

the deformation

internal force of the pile and the interaction between pile and landslide body were easily computed. Finally

an example was calculated by the presented method and FEM

respectively. It was found that results were in good agreement

which verified the correctness of the method.