A structure and method for overall removal of a pile head of a pile foundation

Abstract

The invention relates to a structure and a method for integrally a breaking pile head of a pile foundation. The structure comprises the pile foundation, and main ribs of a reinforcement cage and sounding pipes, which are positioned in the pile foundation; main rib sleeves sleeve sections, higher than the top surface of a design pipe body, of the main ribs of the reinforcement cage; a gap is formed between the outer diameter of each main rib and the inner diameter of the corresponding main rib sleeve; a sounding sleeve is arranged on each sounding pipe in a sleeving manner; a separating pipe is arranged at the position of a pile head cutting line by encircling the main ribs of the reinforcement cage; the separating pipe comprises a flexible outer pipe and inner ribs inserted in an inner hole of the flexible outer pipe; after the pile foundation is cast, the inner ribs are pulled out of the separating pipe, separating holes are forming by drilling, separating wedges are inserted into the separating holes, and the pile foundation is knocked to enable the pile head and the top surface of the design pipe body to be separated. The structure and the method have the beneficial effects that the positions of the sounding pipes and the main ribs of the reinforcement cage in the pile foundation are not required to be searched any more, the main ribs are prevented from being damaged in the breaking construction; the pile head after breaking is flat in structure.

Description

technical field

[0001] The invention belongs to bored cast-in-place piles for construction pile foundations, and in particular relates to a pile foundation pile head integral removal structure and method. Background technique

[0002] After the pile foundation of reinforced concrete is poured, the pile head needs to be broken, and the steel bars and acoustic tubes of the pile head are kept and exposed. The common pile head breaking method is the construction of manual chiseling: in this method, after the cap is excavated, the main reinforcement of the reinforcement cage and the acoustic measuring tube are manually chiseled out with a pneumatic pick, and then the pile head is separated, and then a large mechanical Lifting the pile head, the disadvantage of this method is: the acoustic tube is not easy to find, it is quite time-consuming; it is slow and inefficient when digging out the main reinforcement of the steel cage and the acoustic tube; the damage to the main reinforce...

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