Novel drilling pile casting and manufacturing method thereof

Abstract

The invention relates to a novel drilling pile casting and a manufacturing method thereof. In the construction of bridge works, the problem of pore-forming of a bridge drilling pile in a permafrost region puzzles technicians all the time; under the geological condition of permafrost, the impact force of the drill head of a drilling machine produces thermal disturbance in a hole when the drilling machine reaches the permafrost if the single casting and conventional construction are adopted, hole collapse is caused owning to melting close to the permafrost in the hole, and the pore-forming rate of the drilling pile is difficult to guarantee, thus the construction efficiency is low, the construction period is prolonged, the cost is high, and the construction quality is difficult to guarantee. The novel drilling pile casting comprises a group of small castings (2) for an inner layer, the small castings are welded in segments, the outer side of the small castings for the inner layer is provided with a group of large castings (3) for an outer layer, and fixing slurry (1) is filled between the small castings for the inner layer and the large castings for the outer layer. The invention is applied to the pore forming of the permafrost region in the construction of the bridge works.

Description

Technical field [0001] The invention relates to a bored pile protection tube with permafrost geology in the construction of bridge engineering, in particular to a novel bored pile protection tube and a construction method. Background technique [0002] In the construction of bridge engineering, the problem of forming holes for bridge bored piles in permafrost regions has always plagued the majority of technicians. In the soil layer, the impact force of the drill bit of the drilling rig generates thermal disturbance in the hole, which causes the frozen soil layer near the hole to melt and collapse, which makes it difficult to ensure the hole rate of the bored pile. This makes the construction efficiency low, the construction period is lengthened, the cost is high, and it is difficult to guarantee the construction quality. Summary of the invention [0003] The purpose of the present invention is to provide a new type of bored pile protection tube which has high construction efficie...

AI Technical Summary

Problems solved by technology

[0002]In the construction of bridge engineering, the problem of forming holes for bridge bored piles in permafrost areas has been puzzling the majority of technical personnel. Under normal circumstances, if the single casing is used for conventional construction, when the drilling rig reaches the permafrost layer, the impact force of the drill bit will cause thermal disturbance in the hole, causing the permafrost layer near the hole to melt and cause the hole to collapse. It is difficult to ensure the success of the bored pile. porosity

This makes the construction efficiency low, the construction period is prolonged, the cost is high, and it is difficult to ensure the construction quality

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