METHOD OF INSTALLATION OF PILES ON MACROPOROUS SOILS Russian patent published in 2023 - IPC E02D5/50 

FIELD: construction.

SUBSTANCE: invention and can be used in construction of pile foundations on macroporous soils. The method for using piles with macroporous soils includes erecting a complex pile containing a vertical reinforced concrete shaft and inclined piles with reinforcing cages combined with it. When erecting, a driven reinforced concrete pile with holes for installing inclined piles is used, which forms a vertical reinforced concrete shaft when driven into the ground using pile driving equipment, and the holes in the driven pile are made inclined in opposite directions on different sides relative to the central axes. The installation of inclined piles is carried out through said holes with strengthening of the soil near the piles, and after the driven reinforced concrete pile is immersed in the ground to the design depth, plastic injection pipes are introduced by vibration immersion through said holes made in it, made with a sealed conical end and injection holes in the lower part. Vibro-immersion of plastic injection pipes, which form the shell of inclined piles, is carried out with a steel pipe inside to ensure rigidity and protect the injection holes from soil getting into them. After the plastic injection pipes are immersed to the design depth, the steel pipe is removed using a mechanical grip, then a fixing solution of liquid glass is fed into the plastic injection pipes under pressure, which is forced into the ground through the injection holes in the walls of the lower part of the plastic pipes by introducing into the cavity of the cylindrical shaft, and after extraction, the cavities of the plastic pipes are reinforced and filled with cement mortar.

EFFECT: expanding the arsenal of technical means used in construction of piles on macroporous soils, and increasing the bearing capacity of piles and pile foundations with low labour intensity of the construction process and minimal labour costs.

4 cl, 3 dwg