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Structure and method for integrally breaking pile head of pile foundation

A technology of pile foundation and pile head, which is applied in the field of pile head integral removal structure of pile foundation, can solve the problems of pile foundation damage, time-consuming, major damage to main reinforcement, etc., so as to achieve a smooth pile head structure, avoid casualties, and avoid damage and damage. Effect

Active Publication Date: 2015-02-11
CCCC TUNNEL ENG
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

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 steel 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 disadvantages of this method are: 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 reinforcement cage and the acoustic tube; the damage to the main reinforcement is large; After the pile head is uneven, and there is some damage to the pile foundation

Method used

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  • Structure and method for integrally breaking pile head of pile foundation
  • Structure and method for integrally breaking pile head of pile foundation
  • Structure and method for integrally breaking pile head of pile foundation

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Experimental program
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Effect test

Embodiment 1

[0044] Such as Figure 1 to Figure 5 , a pile foundation pile head overall demolition structure, including the pile foundation and the steel cage main reinforcement 11 in the pile foundation, the acoustic measuring tube 12, after the pile foundation pouring is completed, the pile head of the pile foundation is from the design pile body top surface and the pile The foundation is separated, and the position of the design pile body top surface of the pile foundation is the cutting line 15 of the pile head. The pile foundation is a reinforced concrete cylinder with a diameter of D1=1500mm. The reinforcement cage is equipped with 30 main reinforcements. The main reinforcement is a steel reinforcement with a diameter of 25mm. The main reinforcement is distributed along the circumference of the pile foundation cylinder. The radius of the distribution circle at the center of the main reinforcement is R1=690mm; There are 3 acoustic tubes distributed symmetrically to the center line of ...

Embodiment 2

[0065] A pile foundation pile head overall removal method, the method adopts a kind of pile foundation pile head overall removal structure of embodiment 1, the pile head of the pile foundation is separated from the pile foundation from the design pile body top surface, the design pile of the pile foundation The position of body top surface is pile head cutting line; The step of described method comprises:

[0066] a. Determine the lengths of the main reinforcement casing and acoustic measurement casing according to the positions of the upper end of the reinforcement cage main reinforcement and the pile head cutting line of the pile foundation. The design requires that the main reinforcement is 1000mm higher than the top surface of the pile body (i.e., higher than the cutting line of the pile head), the upper end of the main reinforcement casing is 75mm higher than the upper end of the main reinforcement, and the lower end of the main reinforcement casing is 25mm lower than the ...

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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...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): E02D5/36E02D9/00
CPCE02D9/005
Inventor 王秀申
Owner CCCC TUNNEL ENG
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