CAST-IN-PLACE PILE MANUFACTURING METHOD AND A DEVICE FOR ITS IMPLEMENTATION Russian patent published in 2019 - IPC E02D5/38 

FIELD: construction.

SUBSTANCE: invention relates to the construction, in particular, to the single soil-constructive stuffed tube-filled piles construction for the industrial and civil buildings and structures pile foundations construction. Stuffed tubular pile manufacturing method includes the well formation in the ground, the reinforcement cage placement therein, the open at the ends hollow element installation, which diameter is smaller than the well diameter by the pile wall thickness, dry concrete mixture supplying to the space between the well wall and the hollow element, and the draining material simultaneous laying, the dry concrete mixture, the draining material and the soil compaction, removing the hollow element from the well, the draining material and the dry concrete mixture water saturation. In order to increase the pile production productivity and enable the surrounding the cone and pile shaft foundation soil maximum bearing capacity, into space, between the well wall and the forming column pipe, placing the dry concrete mixture, and at the same time, the drainage material to the pipe cavity and the working body conical socket to the pile shaft entire height until the well mouth. Removing the forming column from the well at the design height, at that, performing the dry concrete mixture compaction by the working body conical socket, with its help, performing the additional well soil displacement and the foundation soil compaction with the soil maximum stress and its compacted draining material preservation preliminary limiting equilibria state five zones formation therein. Disconnecting the elementary section from the column pipe and from the hydraulic cylinder, adding the draining material additional portion into the two elementary sections free cavities, connecting the hydraulic cylinder with the column pipe, lifting it to the design height, then the pile to the wellhead manufacturing process is performed by the above-mentioned operations repetition. After the pile tubular shell is concrete hardening, performing the its head formwork shaping, with the pourable consistence concrete mixture placement therein.

EFFECT: technical result consists in provision of the stuffed composite soil-constructive tubular-filled pile new interactions with the previously extremely ground-stressed bearing foundation, increase in the foundation quality, reliability, bearing capacity, technical and economic efficiency and competitive ability.

2 cl, 4 dwg