Integrated drilling and hole forming method for pile body and pile cap of drilled grouting pile

Abstract

The invention discloses an integrated drilling and hole forming method for a pile body and a pile cap of a drilled grouting pile. The method comprises the following steps of 1, machining of a pile capconstruction device, wherein the pile cap construction device is machined according to the diameter of the pile body and pile cap in the constructed drilled grouting pile and the height of the pile cap, the pile cap construction device comprises a pile cap drill bit and a drill bit guide frame for guiding the pile cap drill bit, and the pile cap drill bit comprises a drill cylinder and screw drill tools distributed on the outer side wall of the lower portion of the drill cylinder from top to bottom in the circumference direction; 2, placement of a drill machine in position; 3, installation ofthe pile cap construction device; 4, drilling of pile cap forming holes; 5, drilling of pile body forming holes. The method is simple in step, reasonable in design, simple in construction and good inuse effect. By adding the pile cap drill bit and the drill bit guide frame on a long screw pile machine to form the pile cap construction device, a drill rod of the long screw pile machine is adoptedfor driving the pile cap construction device to rotate for completing drilling of the pile cap forming holes, there is no need to add power equipment, and integrated drilling and hole forming construction of the pile cap and the pile body can be achieved.

Description

technical field [0001] The invention belongs to the technical field of pile foundation construction, and in particular relates to a hole-forming method for integrated drilling of a pile body and a pile cap of a bored cast-in-place pile. Background technique [0002] Bored cast-in-situ piles have high safety and strong stability, that is, the concrete grout penetrates deep into the soil layer, which can make the soil layer and the cast-in-place pile body closely combined, so that the foundation is more firm and reliable, and the cast-in-place pile can Effectively control the settlement of the foundation, thereby producing a compaction effect on the soil layer; the bored piles have better penetration, compaction and splitting effects on the soil layer, and the interaction between the three can make the soil layer more stable. In actual construction, bored piles refer to piles formed by drilling pile holes on site with drilling machines such as auger drilling rigs and submersib...

AI Technical Summary

Problems solved by technology

At present, when the long auger drilling machine is used to construct the bored filling pile, after the pile body is formed, the pile cap construction is carried out, and the pile surrounding soil excavation, pile head cutting, pile cap construction, pile surrounding backfilling and compaction are required. It has the disadvantages of many processes, long construction time and high cost

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