METHOD OF AUGER PILE CONSTRUCTION Russian patent published in 2017 - IPC E02D5/46 

FIELD: construction.

SUBSTANCE: invention can be used for manufacturing auger piles with shoring of existing foundations. The method for constructing an auger pile comprises drilling a well, filling it with a concrete mixture and putting the soil of the well walls under pressure. After the well is filled with the concrete mixture, a conductor pipe is installed from above, made with an elastic shell around the circumference to seal the annulus of the well; the compressed air or water is fed into the shell at a pressure of up to 0.5 MPa by means of an autonomous packer until the shell size increases, exceeding the annulus by 20-30%. The soil of the well walls is put under pressure by feeding the concrete mixture under an excess pressure of 0.2-0.3 MPa for 5-10 minutes through the conductor pipe, and then immersing it in the concrete mixture of the reinforcement cage.

EFFECT: increased bearing capacity of the pile by effective compaction of the well walls, reduced consumption of the concrete mixture due to elimination of leakage during the pressing process, increased labour productivity.

1 dwg