SCREW PILE Russian patent published in 2016 - IPC E02D5/56 

FIELD: construction.

SUBSTANCE: invention relates to construction of pile foundations. Screw pile includes shaft with tip at one end and functional head rigidly fixed on the other end, containing spiral sections. Pile shaft is made from metal strip, deformed in form of solid spiral with pitch from 40 to 400 mm, along whole length, except for upper end left flat, wherein head comprises tube section square or rectangular, or round section in wall of which are parallel vertically oriented slots, which width corresponds to thickness of upper end of pile shaft, which it is put on it, and is rigidly fixed, for example, welding, wherein upper end of pile shaft is pointed, in it there is through bore aligned with at least one through hole made in wall of functional head. Above level of said through hole there is at least one attachment of tubular support element, fixed by outer structure arranged in cavity of functional head.

EFFECT: reducing material consumption of pile, labour intensity and energy intensity of its production, as well as increased reliability of its operation.

7 cl, 2 dwg