Friction pile based on beam of constant strength

The utility model provides a friction pile based on beam of constant strength, is including burying underground in the pile body of gliding mass and basement rock, the pile body presents the variablecross section form along length direction, and the stake cross -section is the biggest when passing the position of sliding surface, and the pile body advances the rock -entering soil layer from the gliding mass position, passes behind the sliding surface in the embedding basement rock anchor degree of depth L0 degree of depth >= the long L's of total stake of pile body 13, it has the predeformation filling layer still to fill between pile body and the gliding mass. The utility model provides a pair of friction pile based on beam of constant strength, can solve operating difficulties, cost high, hinder the not good scheduling problem of smooth effect, utilize beam of constant strength's theory, dead weight pressure, the good ground's of the ground body compressive capacity and the bearingof expanding the basal cro