In anchored anti-sliding piles engineering for landslides

when constructing of pile body completed and prestress tension loads to anchor cables were applied

sliding force did not acting on piles within a short time. In this phrase

the prestress tension loads produced a sort of active defending effect to landslide immediately

which applied a thrust force to the landslide opposite its sliding direction

and primary internal forces in piles presented. The computing of active defending force and primary internal forces is based on combining two sorts of elastic foundation beam mechanical models

including unidirectional elastic subgrade reaction in pile’s cantilever section and biparameters elastic subgrade reaction in the embedding section. The calculating method is obtained concisely by associating finite difference method of cantilever section’s deflection curve and analytical solution of embedding sections. It is helpful to evaluate the stability of landslide in the phrase of constructing emergent remedial works of anchored anti-sliding piles.