E - Fixed Constructions – 02 – D
Patent
E - Fixed Constructions
02
D
61/82
E02D 5/34 (2006.01)
Patent
CA 1181603
Abstract The apparatus includes two tools for forming holes in the subsoil without oxcavating it, which tools being coaxially mounted on a drill column. To the end of the drill column there is attached a hollow tool which is concealed when a skirt is in a lower position and exposed when the skirt is in an upper position. A soil displacing body is mounted on the drill column and above the tool. The soil displacing body is a hollow structure and has an upper opening wherethrough its inner space communicates with a concrete feeding tube and a lower opening closable by the skirt in its upper position. To construct a tubular pile the apparatus is driven into the subsoil whereby a design hole is formed, then the apparatus is withdrawn from the hole with a simultaneous filling of the hole with a concrete mix through the concrete feeding tube, the soil displacing body, and the lower opening provided there- in. A ballasting material is concurrently fed through the drill column, out of the hollow tool, and into the space defined by the skirt, which, as the apparatus is being withdrawn, assumes a lower position to conceal the hollow tool and define a hollow in the concrete that has been laid in the tube. The invention is useful in constructing cast in place tubular piles in loose and water-saturated soils.
412347
Dnepropetrovsky Inzhenerno-Stroitelny Institut
Swabey Ogilvy Renault
LandOfFree
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