Long spiral cast-in-place pile construction process

Abstract

The invention discloses a long spiral cast-in-place pile construction process which includes the steps that step one, a long spiral pile machine is used for spirally and rotationally cutting a soil body downwards till a drill rod reaches a pile bottom elevation designed for construction; step two, prepared slurry is pumped through the drill rod of the long spiral pile machine, and the drill rod is lifted upwards while pumping the slurry till the bottom of the drill rod reaches the ground; step three, the long spiral pile machine moves, the steps are repeated, and hole-forming drilling process procedures of a next pile is carried out; and step four, a reinforcement cage is put down into a pile-formed hole where the slurry is pumped through a crane, and then concrete is poured to a pile top elevation of a construction design. According to the long spiral cast-in-place pile construction process, by pumping the prepared slurry into the pile-formed hole for protecting a wall, the pressure of surrounding soil is balanced, hole collapse is not likely to happen, the long spiral pile machine can continuously form holes, and the construction efficiency is greatly improved; the reinforcement cage is adjusted from a rear position to a front position, so that quality is guaranteed; and meanwhile, only common concrete is poured, so that cost is reduced, the multiple pile-formed holes can be poured together, and construction time is saved.

Description

Technical field [0001] The present invention relates to the technical field of infusion pile construction, and in particular, to a long spiral infusion pile construction process. Background technique [0002] At present, in the basic engineering of construction, water conservancy, highways, long spiral piles are widely used in the advantages of faster speed, low noise, low noise wall, and low construction costs. The existing pillar pile construction process is first, with the rig long spiral to rotate the cutting soil, the drill pipe reaches the design pile, and then pumped concrete from the middle of the drill rod, while pumping concrete one side. Upward drill rod until the top of the pile is reached, and the rear reinforcing cage is added to the reinforced cage of the pile, that is, complete a perfusion pile construction. However, there is the following defects during the entire construction process: [0003] 1. It is necessary to pump concrete, which is higher than ordinary co...

AI Technical Summary

Problems solved by technology

[0003] 1. Concrete needs to be pumped, which is more expensive than ordinary concrete;

[0004] 2. The reinforcement cage of the pile body needs a vibrating rear position, which is easy to deviate;

[0005] 3. Concrete transport vehicles need to wait on site, which wastes time and reduces work efficiency;

[0006] 4. After the long screw pile is holed, it needs to pour concrete and lower the reinforcement cage. The drilling rig cannot drill into the next pile position in time, and the work efficiency is low.

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