Static explosion integral breaking pile head structure with built-in annular device and construction process thereof

Abstract

The invention relates to a static explosion integral breaking pile head structure with a built-in annular device and a construction process thereof, and belongs to the technical field of cast-in-place pile construction. The static explosion integral breaking pile head structure comprises a reinforcement cage body and a pile head breaking device, the pile head breaking device comprises a partition plate, an annular pipe and a liquid injection pipe, the partition plate is located in the reinforcement cage body and fixedly connected with the reinforcement cage body, the partition plate is located above the elevation position where the pile head is broken, the annular pipe is located above the partition plate and connected with the partition plate, one end of the liquid injection pipe communicates with the annular pipe, and the other end of the liquid injection pipe extends out of the top of the reinforcement cage body; and a clamping and embedding hole is formed in the side wall of the annular pipe, a splitting block is bonded in the clamping and embedding hole, and a spine part is arranged at the end, away from the axis of the annular pipe, of the splitting block. The integral breaking pile head structure and the construction process has the effects that the situation that cracks are generated on a pile body is reduced, and the pile forming quality is improved.

Description

technical field [0001] The present application relates to the field of cast-in-situ pile construction, in particular to a static blast integral demolition pile head structure with a built-in ring device and its construction technology. Background technique [0002] During the construction of cast-in-situ piles, in order to ensure the concrete strength of the pile head, when pouring the cast-in-place piles, the elevation of the top of the piles will be higher than the design elevation of the pile top, and the part of the pile head that is higher than the design elevation of the pile top will be removed during subsequent construction. . [0003] At present, the existing Chinese patent that can refer to the notification number is CN104343115B, which discloses a pile foundation pile head overall demolition structure and method, including the pile foundation and the main reinforcement of the reinforcement cage in the pile foundation, and the acoustic tube. The main reinforcement...

AI Technical Summary

Problems solved by technology

Although the above breaking method can reduce the damage to the main reinforcement, it is necessary to drill a hole and insert the separation wedge into the separation hole during the pile breaking process, and then chisel the pile foundation to separate the pile head from the pile body. During the truncation process of the pile head and the pile body, since the pile head and the pile body are in an integral structure, when the separation wedge is knocked to break the pile head, it is easy to cause cracks in the pile body, which affects the quality of the pile.

[0004] In view of the above-mentioned related technologies, the inventor believes that there are defects that are likely to cause cracks in the pile body and affect the quality of the pile.

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