Piling device and piling method of dry soil withdrawal meshing type rectangular injecting pile

Abstract

The invention relates to a piling device of a dry soil withdrawal meshing type rectangular injecting pile, which comprises an opening type rectangular steel die pipe with a convex edge, wherein the opening type rectangular steel die pipe with a convex edge is configured with a rectangular soil lifting device; the convex edge comprises a rectangular box frame and is welded to the outside of the bottom of the steel die pipe, and one side of the soil lifting device is provided with a soil push device. In the piling step, the steep die pipe is sunk into a pile position soil layer, and the soft soil of the soil layer is squeezed into the pipe; the soft soil is lifted to the upper end of an opening of the pipe by the soil lifting device; the soil push device is started to push the soil at the upper end; a reinforcing steel bar framework is placed, and the concrete is poured; the steel die pipe is drawn by vibration, and a first rectangular injecting pile with the convex edge is manufactured; the adjacent rectangular injecting pile with the convex edge is sunk into the steel die pipe in the position of one second of the convex edge concrete of the first rectangular injecting pile; a half of the convex edge concrete and a soil body enter the rectangular steel die pipe; the steps are repeated, and the second rectangular injecting pile with the convex edge is generated to be meshed before initial condensation. The invention has the advantages of continuous and seamless meshing of a pile body and good permeation resistance and can realize automatic operation, reduce the labor intensity and improve the bearing force and the side soil pressure resistance of a deep base pit.

Description

technical field [0001] The patent of the present invention relates to a pile foundation of civil construction engineering, in particular to a pile-forming device and a pile-forming method of a dry-extracted soil-occlusal rectangular cast-in-place pile used for deep foundation pit support. Background technique [0002] A utility model patent whose patent number is ZL200820086191.8 "Pile Forming Device for Reinforced Concrete Pile in Dry Work" has been disclosed in the prior art. The earthenware is composed of a top plate, a vertical long steel plate and a plurality of horizontal steel plates welded together. The top plate is provided with top plate connecting notches and ribs. The soil lifter is connected with a long rod, and its bottom surface is provided with a bottom plate which overlaps and connects with the top plate of the soil lifter, and its lower part is provided with a flap buckle which is engaged with the connection notch of the top plate; the utility model has the...

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Problems solved by technology

[0003] However, the disadvantage of the aforementioned patent No. ZL200820086191.8 "Pile Forming Device for Reinforced Concrete Cast-in-situ Pile in Dry Work" is that the rectangular steel mold tube and its cast-in-situ pile are of a single type, which cannot be interlocked to form a whole, thereby affecting its performance. and scope of application

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