BORED PILE Russian patent published in 2024 - IPC E02D5/34 

FIELD: construction.

SUBSTANCE: invention is intended for arrangement of foundations and can be used both in erection of new buildings and structures, and in reinforcement of existing foundations in weak soils. Bored pile comprises an injection pipe, fittings from three sections rigidly connected to each other, consisting of longitudinal rods, disc-clamp and annular clamps, and a tip made in the form of a disc installed on the lower end of the reinforcement frame and protruding beyond the reinforcement outline. Bored pile is equipped with a casing installed on the whole depth of the well. Tip is made in the form of a metal plate on which reinforcing rods of the lower section are installed, rigidly connected to each other along the perimeter by the specified number of clamps and rigidly connected from above with the lower ends of the reinforcement cage of the zone of weak soil of the well, pre-bent towards the casing. In the upper ends of the rods of the reinforcing frame of the zone of weak soil of the well are rigidly connected to the disc-clamp, in the axial hole of which there is an injection pipe, lower ends of reinforcing bars of the upper reinforcement cage with fixed thrust washers are inserted into the holes along the perimeter. For the zone of weak soil of the well, reinforcing rods of an increased number and a reduced diameter are used in comparison with the lower section of the reinforcement cage, and total area of their cross-section is more than total area of rods of lower reinforcement frame.

EFFECT: higher operational reliability of the pile.

1 cl, 3 dwg