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File head broken by water injection

A technology for breaking pile heads and pile heads, which is used in sheet pile walls, construction, infrastructure engineering, etc., can solve problems such as the useless value of pile head concrete, poor construction environment for workers, and distortion of steel bars at the pile head, so as to overcome construction shortcomings. , the construction progress is fast, the effect of saving materials

Inactive Publication Date: 2006-02-01
刘思谋
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Problems solved by technology

At this time, the pile head concrete generally has very high strength, and the main tools used are electric picks and supplemented by manual chisel prying. Large, poor construction environment for workers, time-consuming and labor-intensive
In the process of breaking the pile head, the steel bars around the pile head of the bored pile are often twisted, and it is difficult to straighten, which affects the quality of the project; and the broken pile head concrete has no use value, forms construction waste, and affects the surrounding environment

Method used

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  • File head broken by water injection
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specific Embodiment

[0017] Bored cast-in-situ piles of pier No. 33 on the left side of the east section of Wenshui Road Viaduct on Shanghai Middle Ring Road (A2.5 bid). 3.3 meters, and the design elevation of the pile top is +0.91 meters. According to the regulations of Shanghai Municipal Engineering Bridge Construction Code: the reserved concrete height above the design elevation of the pile top of the bored pile is not less than 2 meters, and the water pressure of the jet pipe and outlet pipe design is allowed 8Mpa, the length of the jet pipe is designed to be 3 meters, divided into three sections, each section is 0.8 to 1.2 meters long, the inner diameter of the jet pipe is 3 cm, and the wall thickness is 5 mm. Port steel sleeve (with sealing rubber gaskets at both ends) connection. The aperture of the nozzle is 1.0cm, and the nozzle is a cone. The outlet pipe chooses a high-pressure resistant (not less than 8Mpa) flexible bellows pipe with an inner diameter of 5.0cm. The water inlet pipe choo...

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Abstract

A water jet method for breaking pile head includes such steps as drilling, pouring concrete pile underwater, sinking the water-jetting pipe in the concrete in fluid state, flushing the concrete above the designed height by high-pressure water for removing the cement from the concrete, and pumping the cement sludge in the tank or deposition pool by sludge pump.

Description

technical field [0001] The water-jet broken pile head of the invention belongs to the pile head broken pile of bored piles. Background technique [0002] In the past, the pile heads of bored piles were mainly broken manually. After the construction of bored piles for each abutment, the earthwork for the caps was only allowed to be excavated when the concrete of the pile body reached a certain strength. At this time, the pile head concrete generally has very high strength, and the main tools used are electric picks and supplemented by manual chisel prying. Large, poor construction environment for workers, time-consuming and labor-intensive. In the process of breaking the pile head, the steel bars around the pile head of the bored pile are often twisted, and straightening is difficult, which affects the quality of the project; and the broken pile head concrete has no use value, forms construction waste, and affects the surrounding environment. Contents of the invention [...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): E02D5/34E02D15/06
Inventor 刘思谋
Owner 刘思谋
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