SCREW PILE Russian patent published in 2019 - IPC E02D5/56 

FIELD: construction.

SUBSTANCE: invention relates to the construction, in particular to structures of screw piles used in the construction of foundations for the construction of bridges, buildings, power lines and other objects. Helical pile includes a cylindrical shaft and a helical blade connected to the lower end of the barrel. Pile contains a hollow cylindrical element, open at the ends and having inner and outer side surfaces, located coaxially with the barrel, and connected to it through stiffening ribs connecting the inner surface of the cylindrical element and the outer surface of the barrel. Lower end of the cylindrical element located between the screw blade and the estimated level of immersion of the pile into the ground. Upper end of the cylindrical element is located in the interval from the estimated level of immersion of the pile in the ground to the upper end of the barrel. Lower ends of the ribs are provided with pads located in a plane perpendicular to the longitudinal axis of the trunk, and are not below the expected level of pile immersion in the ground.

EFFECT: technical result of the invention is to increase the ability of the pile to resist vertical (both indentation and pulling) and horizontal loads, especially in loose compressible soils, increasing the adhesion strength of the screw pile with the ground to create a stronger anchor effect, as well as increasing the strength of the pile shaft for bending.

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