Real-time treatment method and equipment of bored pile head

A technology for bored piles and treatment methods, which is applied in the direction of drilling equipment and methods, sheet pile walls, drilling equipment, etc., which can solve problems such as poor safety, low work efficiency, and large damage to main reinforcement, and achieve convenient construction and shorten the duration. Time and the effect of reducing construction risk

Inactive Publication Date: 2015-01-14
THE FIFTH ENG CO LTD OF CHINA TIESIJU CIVIL ENG GRP
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Problems solved by technology

These two methods have the disadvantages of large damage to pile head concrete and main reinforcement, high cost, and full work efficiency.
[0003] In terms of excavating the pile head immediately after the underwater concrete pouring of the bored pile, there is only an attempt in China to lengthen the steel casing to below the pile head and manually excavate the pile head concrete after draining the mud, which is not safe. Work efficiency is not high

Method used

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  • Real-time treatment method and equipment of bored pile head
  • Real-time treatment method and equipment of bored pile head
  • Real-time treatment method and equipment of bored pile head

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Embodiment

[0022] During the construction of bored piles, the concrete at the pile head will be lifted continuously during pouring. In order not to affect the quality of the pile head concrete, the underwater concrete is mostly mixed with retarder. When the concrete is poured, there is no initial setting of the concrete at the pile head, which creates the possibility for the advance treatment of our pile head concrete. The principle of the invention is to cut and break the unprepared underwater concrete by the drill bit, and put the broken concrete into the barrel by rotating the drill bit, and bring it out of the hole, so as to achieve the purpose of early treatment of the pile head.

[0023] According to the working characteristics and working environment of the pile head real-time processing drilling rig used for pile head processing for the immediate processing of bored pile heads and the working environment, the design of the tooling needs to have the ability to run without the self-...

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Abstract

Disclosed is real-time treatment method and equipment of a bored pile head. The method includes the steps of after underwater concreting for a bored pile, pulling out a guide pipe, driving the guide pipe to a position to close a pile location through a travelling and slewing system, starting a luffing device to erect a telescopic drill rod, positioning a drill rig, aligning the center of a bit with the center of a borehole position, lowering the telescopic drill rod to drive the bit to reach a layer of scum, starting a driving rotating motor to drive the bit to rotate, driving the concrete higher than the layer of scum and the pile head preset elevation into the bit, lifting up the telescopic drill rod to lift the bit out of the bored pile when the bottom of the bit reaches the preset elevation, and clearing the scum and concrete in the bit to finish real-time treatment of the pile head. The equipment comprises the travelling and slewing system and the luffing device. The real-time treatment method and equipment has the advantages that pile head concrete quality is improved, work efficiency is improved, expenditures are saved, bits of different diameters are available, adaptability is high, and deep-hole operation for great-depth pile head treatment is also available.

Description

technical field [0001] The invention relates to a method and a device for immediate processing of bored pile heads. Background technique [0002] At present, the pile heads of bored piles in our country are mostly processed after the cap is excavated. There are usually two ways to remove the pile heads. One is to use manual tools such as pneumatic picks and steel drills to remove the pile heads; The main reinforcement of the cast-in-situ pile is drilled, stripped, and then the pile head is circumcised. These two methods have the disadvantages of large damage to pile head concrete and main reinforcement, high cost, and full work efficiency. [0003] In terms of excavating the pile head immediately after the underwater concrete pouring of the bored pile, there is only an attempt in China to lengthen the steel casing to below the pile head and manually excavate the pile head concrete after draining the mud, which is poor in safety. Work efficiency is not high. Contents of t...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): E02D9/00E21B7/02
CPCE02D5/223
Inventor 胡磊
Owner THE FIFTH ENG CO LTD OF CHINA TIESIJU CIVIL ENG GRP
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