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Ferrule method for prefabricated pile lower section pile exelcymosis

A technology of prefabricated piles and hoops, applied in sheet pile wall, construction, infrastructure engineering and other directions, can solve the problems of weak joint strength, high price and high construction cost of prefabricated piles

Inactive Publication Date: 2008-03-26
SHANGHAI FOUND ENG GRP
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  • Summary
  • Abstract
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Problems solved by technology

Most of the process equipment is imported, which is expensive and the construction cost is high. It has certain advantages when dealing with large-volume and high-strength obstacles, but the work efficiency is not high when dealing with general prefabricated piles.
[0003] At present, a variety of driving or pressing steel casings are used to extract piles. This method is relatively mature for extracting single-section piles. pile problem

Method used

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  • Ferrule method for prefabricated pile lower section pile exelcymosis
  • Ferrule method for prefabricated pile lower section pile exelcymosis

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Embodiment Construction

[0023] Below in conjunction with specific embodiment, further illustrate the present invention. It should be understood that these examples are only used to illustrate the present invention and are not intended to limit the scope of the present invention. In addition, it should be understood that after reading the teachings of the present invention, those skilled in the art can make various changes or modifications to the present invention, and these equivalent forms also fall within the scope defined by the appended claims of the present application.

[0024] As shown in Figure 1-3, the hoop method in the extraction of the lower section of the prefabricated pile uses a wire rope lock sleeve as the hoop 1 for the lower section 4, and the hoop 1 is installed on the inner wall of the steel sleeve 6 for pulling out the pile. Ferrule is fixed groove 2, and the manufacture method of fixed groove 2 is on the inwall of steel sleeve 6 with steel plate to weld the about 5cm of a circle...

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Abstract

The lower precast pile section drawing hoop-jacketing process includes the following steps: making and installing steel cable hoop, depositing the hoop, setting the hoop, locking the lower precast pile section with the hoop and drawing out the lower precast pile section. The process is simple, high in construction efficiency, low in cost and practical.

Description

technical field [0001] The invention belongs to the field of underground building construction, in particular to a construction method for integrally removing old prefabricated piles during the construction of underground projects such as pile foundations, enclosure structures, tunnels or pipe jacking in urban construction. Background technique [0002] In the past, the general special rotary drilling rig for pulling out piles used to pull out piles. This type of equipment adopts dry operation to form holes, and the multi-section pile can be pulled out in sections with a punching grab or the pile body is completely broken before grabbing out. Most of the process equipment is imported, which is expensive and the construction cost is high. It has certain advantages when dealing with large-volume and high-strength obstacles, but the work efficiency is not high when dealing with general prefabricated piles. [0003] At present, a variety of driving or pressing steel casings are...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): E02D9/02
Inventor 吴洁妹丁涛喻强徐国平
Owner SHANGHAI FOUND ENG GRP
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