DRIVEN PILE Russian patent published in 2015 - IPC E02D5/56 

FIELD: construction.

SUBSTANCE: in a driven pile including a helical shaft, the latter is made along the perimeter in the form of a multi-turn helical surface with helical grooves inside the helical shaft in the form of pockets of a curved shape with curvature centres of pockets of curved shape of the helical surface, which are located inside the cross section of the helical shaft, and consists along the perimeter of three and more strips of trapezoid shape, which are twisted in longitudinal direction relative to longitudinal axis and bent along a helical line in transverse direction on a mandrel in the form of a rotation paraboloid, with increase of dimensions of the strips as to width, with formation along the perimeter of the helical shaft of three and more internal curved surfaces of a convex shape with curvature centres inside the helical shaft and with formation of overlaps inside the helical shaft in the form of helical blades throughout length of the helical shaft.

EFFECT: simpler shaft driving into soil; simpler manufacture and enlargement of technological capabilities.

8 dwg