Performance study on three methods for landslide thrust

摘要

According to the relative mechanics relation of antislide and retaining structure to the reinforced landslide body, The classification to calculation methods of landslide thrust may be describled as separating method, virtual force method, and the coupling finite element method (FEM). The transferring coefficient method has been widely used for engineering practice in china, and it is a typical representative of the separating method. With the development of calculation theory, the transferring coefficient method would certainly be replaced by advanced and practical methods. Under the condition of negative direction segment appeared in landslide, the virtual force method such as Morgenstern-Price can not get reasonable result. The FEM can get both the landslide thrust and internal force of the pile. The FEM is better than "k" method. FEM can reflect the difference of stress pattern below slip surface due to the difference of rock or soil property. Presented by the comparative analysis, using the finite element method to calculate the landslide thrust can get reasonable result, it should be widely applied to in engineering practice