SYRINGE-TYPE SCREW PILE Russian patent published in 2015 - IPC E02D5/56 

FIELD: construction.

SUBSTANCE: syringe-type screw pile comprises a tubular shaft with a helical blade fixed on it, besides, the lower end of the tubular shaft is made with single-sided sharpening and is rigidly closed. Above the screw pile there are holes in the shaft along the spiral, the twisting angle of which matches the angle of helical blade twisting, at the same time the pitch of hole arrangement is chosen depending on soil density.

EFFECT: increased bearing capacity of a pile due to increased adhesion of pile shaft with soil, increased reliability of a pile during its operation.

2 cl, 2 dwg