METHOD FOR MANUFACTURE OF BORE-INJECTION PILE IN SEASON FROZEN GROUND Russian patent published in 2000 - IPC

FIELD: foundation building, applicable in erection mainly in winter season of bore-injection piles in season frozen grounds. SUBSTANCE: a bore hole is made in the ground, it is filled with cement-sound mortar up to the level of ground freezing, and a reinforced- concrete member with a through hole in length and with reinforcement projecting on its ends is immersed in the remaining part of the bore hole up to full immersion of the lower reinforcement in the cement-sand mortar. After that, in a fixed position of the reinforced - concrete member, mould pressing of the bore hole is performed by additional feeding of mortar under pressure through the hole in the member. Anti-swelling protection may be made is swelling grounds on the lateral surface of the member and/or bore-hole wall to the depth of ground freezing. EFFECT: reduced cost of manufacture in winter of a strong bore-injection pile in season frozen grounds. 2 cl, 2 dwg