Rapid demolishing device and method for pile head of filling pile

Abstract

The invention discloses a rapid demolishing device and method for a pile head of a filling pile. The device comprises a prefabricated steel bar cage, isolating sleeves, isolating lantern rings and expansion guide pipes; the prefabricated steel bar cage is formed by vertically surrounding a plurality of steel bars, the isolating sleeves sleeve parts of the steel bars higher than a scale height, the two ends of the isolating lantern rings are respectively connected to the isolating sleeves, a ring belt of each isolating lantern ring is arranged outside the prefabricated steel bar cage, one ends of the expansion guide pipes are bound with the lower ends of the isolating sleeves not connected to the isolating lantern rings, and the other ends of the expansion guide pipes are arranged outside the prefabricated steel bar cage. No special personnel are required, the principle is simple, the operation is convenient, the construction efficiency is improved, the demolishing time for the pile head of the concrete filing pile is greatly shortened, and engineering cost is saved.

Description

technical field [0001] The invention relates to the technical field of pile formation of concrete pouring piles, in particular to a device and a method for quickly removing pile heads of overfilled piles after pile formation of cast-in-situ piles. Background technique [0002] Concrete cast-in-situ pile system refers to the piles formed by forming pile holes in the foundation soil by means of mechanical drilling, steel pipe extrusion or manual excavation on the project site, placing steel cages in them, and then pouring concrete. However, in order to ensure the quality of the pile head during pile foundation construction, the pile top elevation is generally higher than the design elevation, because when pouring concrete, the sediment at the bottom of the pile and the impurities precipitated in the mud during the pouring process will form a certain thickness on the concrete surface. After the concrete is solidified, the overfilling part must be chiseled off to expose the main...

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Problems solved by technology

[0003] The traditional method of chiseling the pile head generally adopts manual pile breaking method. Because there is a large grip force between the pile head concrete and the main reinforcement, it is necessary to use a pneumatic pick (air compressor) to drive in the pile top position with a steel drill. First remove the protective layer of concrete on the outside of the reinforcement to expose the reinforcement, and then gradually remove the excess concrete from the inside of the reinforcement cage along the circumference. It can be seen that this construction method is time-consuming and laborious, with low construction efficiency and large noise pollution, especially for air compressors. Damage the quality of engineering piles and bring engineering hidden dangers. Therefore, it is necessary to design a quick removal device and method for cast-in-situ piles with high construction efficiency, time-saving and labor-saving

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