PROCESS OF ERECTION OF PILE IN GROUND Russian patent published in 2003 - IPC

FIELD: construction industry, pile foundations. SUBSTANCE: invention refers to driving pile into ground predominantly near existing foundation. It consists in driving hollow boring casing with tip in its lower part and helical arrangement on outer surface into ground up to design mark. Salient feature of process lies in that boring casing that has constant section of helical arrangement over length of boring casing equal to 0.02-0.1 outer diameter of boring casing is driven thanks to its simultaneous rotation and impressing into ground under action of outside axial force or thanks to its rotation with sinking under its own weight. Then metal cage is placed in space of boring casing and the latter is filled with concrete. Boring casing is screwed out of ground before concrete hardens or is retained in ground. EFFECT: raised bearing capacity of pile thanks to its position stability in ground, potential for arrangement of pile foundation in soft and flooded grounds. 1 cl, 5 dwg