PILE Russian patent published in 1994 - IPC

FIELD: civil engineering. SUBSTANCE: pile comprises column made of sections interconnected by couplings which flare out to the upper end with the conical or pyramidal external surface and the coupling height is equal to three times the section diameter. Couplings are spaced along the pile column at a clear distance of 2.5-3.5 h where h - coupling height. As the couplings recede from the lower end of pile column, they may be made with alternatively increasing angle of inclination of their sides or generatrices. The couplings may have the lower base of a changing size, increasing as they recede from the lower end of the pile shaft. EFFECT: improved design. 3 cl, 6 dwg