Piling device and piling method for rectangular filling pile with soil drawn out drily

Abstract

The invention provides a piling device for a rectangular filling pile with soil drawn out drily. The device comprises an open rectangular steel form tube, wherein a movable inserted rectangular soil lifting device is arranged in the rectangular steel form tube; a bulldozing device with a slider push plate is arranged at one side of the rectangular soil lifting device; the slider push plate is driven by hydraulic or compressed air; and the moving direction of the slider push plate is vertical to the moving direction of the soil lifting device, and the working surface of the slider push plate corresponds to the surface of grid soil of the soil lifting device. The piling method comprises the following steps: plunging the open rectangular steel form tube in the soil layer of a pile station after miscellanea is removed from the pile position and soil is filled into the pile station, thus weak soil of the soil layer is fully extruded into the rectangular steel form tube; the lifting the weak soil to the upper end of the opening of the steel form tube by the soil lifting device; starting the slider push plate of the soil moving device to extrude the rectangular weak soil at the upper endof the opening of the steel form tube out of the tube; removing soil by connecting an extension bar and the soil lifting device for extending, until the soil is completely extruded and removed; arranging a reinforcement cage in the steel form tube from the opening, and filling concretes in the steel form tube from the opening; and pulling out the steel form tube by shaking to form a pile. The device has the advantages of saving concretes and reinforced bars, improving carrying capacity and lateral pressure resistance of deep foundation pits, having high construction efficiency, and obviously reducing the labor strength of operators.

Description

technical field [0001] The patent of the present invention relates to a pile foundation of civil construction engineering, in particular to a method and a device for forming a rectangular cast-in-place pile with dry soil 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 advantages It can greatly save con...

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Problems solved by technology

[0003] However, the above-mentioned patent No. ZL200820086191.8 "Pile Forming Device for Reinforced Concrete Pile in Dry Work" has the disadvantage that the soil body is pushed out from the soil lifter without the cooperation of mechanized construction procedures, which affects the further improvement of its construction efficiency.

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