The Method of Quickly Dismantling the Pile Head by Mechanical Hole Grouting Pile

Abstract

The invention relates to a fast file head removing method for a mechanical pore forming pouring pile. The method includes before pouring pile concrete, sleeving the pile steel bar portion with plastic sleeves, arranged upper and lower horizontally-arranged plastic pipes in the pile removing position, penetrating a ring steel bar into the upper plastic pipe, bending the ring steel bar upwardly till ground to fix to the ground temporally, arranging a lower annular plastic pipe, and sealing two ends of the plastic pipes through foaming agent; before disassembling the pile head concrete, welding the ring steel bar to form a ring, and setting a disassembling mark in the pile head removal position; during disassembling, placing iron wedges at two ends of the lower plastic pipe, beating the iron wedges through a hammer, allowing the pile head concrete to break on the level of the upper and lower plastic pipes, suspending and removing the pile head concrete, and completing disassembling. The method has the advantages that the machinery level is high, labor investment is lowered, construction is facilitated, the constructing speed is high, the quality of disassembling construction can be guaranteed easily, and the environment protecting effect is fine.

Description

technical field [0001] The invention relates to the rapid removal construction of pile heads of mechanical hole-forming cast-in-place piles. Background technique [0002] The concrete demolition process of mechanical hole-forming pile head is to use toothless saw cutting and manual demolition with pneumatic pick. This process has the following disadvantages: [0003] 1. The traditional construction technology of cast-in-place piles leads to complete contact between the pile head steel bars and the concrete laitance. With the increase of the strength of the concrete laitance, it is difficult to peel off the pile head steel bars and concrete. [0004] 2. When removing the concrete at the pile head, it is mainly carried out by cutting with a toothless saw and a portable pick. During the operation, the steel bars at the pile head are often cut off, resulting in damage to the steel bars. Although measures such as reinforcement are used, the steel bars at the pile foundation will ...

AI Technical Summary

Problems solved by technology

[0003] 1. The traditional construction technology of cast-in-place piles leads to complete contact between the pile head reinforcement and the concrete laitance. With the increase of the strength of the concrete laitance, it is difficult to peel off the pile head reinforcement and concrete.

[0004] 2. When removing the concrete at the pile head, it is mainly carried out by cutting with a toothless saw and a portable pick. During the operation, the steel bars at the pile head are often cut off, resulting in damage to the steel bars. Although measures such as reinforcement are used, the steel bars at the pile foundation will still be affected. The quality of the connection with the pile cap leaves hidden dangers for the overall quality of the project

[0005] 3. Using traditional construction technology, the operation time is long, the labor force is large, the construction efficiency is very low, and a large amount of labor and mechanical equipment are required to be invested in the construction process, and the economic effect is poor

[0006] 4. The design elevation of the pile head is not easy to control. During the demolition process, the removal height of the pile top is often too large or too small, and the shape of the pile top after demolition is irregular. The quality of the pile head removal is not easy to control

[0007] 5. During the demolition process, a large amount of waste residue and noise are generated. On the one hand, the waste residue needs to be cleaned up and transported outside in time, which increases the construction cost. On the other hand, improper disposal of waste residue and noise emission also pollute the surrounding environment of the construction site

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