METHOD FOR MANUFACTURING BUILT-IN-PLACE PILE Russian patent published in 2001 - IPC

FIELD: construction engineering. SUBSTANCE: method is used for manufacturing anchoring devices in different grounds without ground carry-over to surface and without applying dynamic force of reinforced concrete and concrete piles on them, and for deep soil consolidation, including compressible area under existing foundations, by introducing cohesionless material. Method involves hole excavation in ground, material delivery to hole from ground surface followed by hole expansion. Novelty is that force is applied to ground directly and through hole-filling material by means of tool with its lower end provided with screw projections, for example, trapezoidal-section ones. Tool is set in rotary and axial translation motion of different combinations of sense of rotation and speed; characteristics of hole-filling material are corrected according to amount of material delivered to hole. EFFECT: facilitated procedure. 2 cl, 7 dwg