ERECTION METHOD OF PILE OF SHALLOW EMBEDDING Russian patent published in 2014 - IPC E02D5/30 

FIELD: construction.

SUBSTANCE: erection method of a pile of shallow embedding involves making of an initial well and installation of a pile shaft into it. The pile shaft is composed of a single steel pipe or it is provided with a telescopic configuration using steel pipes of large diameter with smooth transitions from one section of the shaft to the other so that length l₂ of the second pipe is taken at the interval of 1/3 to 1/10 of total pile length L, and in case the third pipe is used, which comprises the pile shaft, its length l₃=l₂-l₂' (where l₂' - length of shortened second pipe) is taken at the interval of 1/6 to 1/20 of total pile length L. The lower end of the shaft is equipped with a flat steel bearing plate having the shape of a polygon, a square, a round, a ring, or the bearing plate is made in the form of a grid from a metal profile. The pile shaft is located in the centre of the initial well, the free space of which is filled to depth l₂ or l₂'+l₃ with large, average and small fragmentary material, for example crushed stone, and the above lying volume of the well is filled with wet quartz sand mixed with soil extracted during development of the initial well with further compacting of filler material. The cavity of the shaft itself is left hollow or filled with concrete mixture after or without any introduction to it of a reinforcement cage with vibratory mechanisms involved for normative compacting of concrete.

EFFECT: improving carrying capacity of pile foundations; ensuring environmental security; reducing material consumption.

6 cl, 4 dwg