Concrete filling pile head static cutting and crushing method

Abstract

The invention discloses a pile head static cutting crushing method for a bored concrete pile; a plurality of cutting bodies are evenly and horizontally fixed around the vertical steel ribs of a steel reinforcement cage of the bored pile on the position where the concrete needs to be removed; the concrete is poured after the steel reinforcement cage is hung into the pile hole; the pile head concrete is pulled out by a hoisting device or is cleaned manually after the concrete hardens; the pile head static cutting crushing method is characterized in that the number and the distribution form of the cutting pieces are designed according the diameter of the bored pile; for the bored pile with the diameter less than 1000mm, the cutting pieces are distributed outside the vertical steel ribs; for the bored pile with the diameter more than 1600mm, the cutting pieces are distributed inside the vertical steel ribs and at least a support steel rib is arranged in the pile parallel to the cutting pieces; each support steel rib is fixed bound with a cutting body; besides, a cutting piece can be vertically fixed outside each vertical steel rib to realize the bidirectional cutting. The pile head static cutting crushing method for the bored concrete pile has the advantages of obviously reducing the construction cost and the labor intensity, shortening the construction period, preventing the vibration noise and the dust in the construction process, being applicable to the popularization and application of the construction industry.

Description

technical field [0001] The invention relates to a static cutting and crushing method for pile heads of concrete pouring piles, which belongs to the matching treatment measures after concrete building components are poured and formed. Background technique [0002] Concrete pouring pile is a structural measure often used in industrial and civil construction and foundation construction to improve the bearing capacity of the foundation. It is widely used in high-rise buildings, bridges and some areas with poor ground endurance. Since the concrete on the top layer will be mixed with the mud in the pile hole during the pouring and forming process of the cast-in-place pile, the strength is very low and cannot reach the design strength of the pile body. Therefore, this part of the pile head concrete must be cut off to expose the pile body. vertical steel bars. But for a long time, there has been no good way to deal with the excess concrete at the pile head. It can only be removed m...

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Problems solved by technology

In the actual implementation, the inventor found that the location, method and quantity of the cutting body have a great influence on the cutting effect, and the method of installing in the vertical reinforcement of the steel cage disclosed in the previous patent is only applicable to the diameter of the cast-in-place pile larger than 1000mm In the case of less than 1500mm, it is not suitable for all sizes of cast-in-place piles. In the process of cutting and lifting and pulling out cast-in-place piles of other sizes, there is a defect that the concrete cannot be cut into small pieces.

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