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Prestress pulling resistant anchor pile and constructing method thereof

A construction method and a technology of anti-uplift anchors, which are applied to sheet pile walls, foundation structure engineering, protection devices, etc., can solve problems such as poor mechanical performance of anti-uplift anchor piles, achieve strong practicability, improve mechanical performance, good social benefits

Inactive Publication Date: 2010-01-06
朱奎
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] The technical problem to be solved by the present invention is to provide a prestressed uplift-resistant anchor pile and its construction method to solve the problem of poor mechanical performance of traditional uplift-resistant anchor piles

Method used

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  • Prestress pulling resistant anchor pile and constructing method thereof

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Embodiment Construction

[0030] Describe in detail below in conjunction with accompanying drawing.

[0031] The foundation project of a boiler room in a water plant is 18m wide from north to south and 21.6m long from east to west, all placed underground, with 2 floors in total. The structure type is a frame structure, the thickness of the foundation plate is 800mm, and the depth and elevation of the foundation are -9.6m. Considering the high groundwater in this area, the weight of the underground boiler room itself cannot resist the buoyancy of the groundwater. In order to solve the problem of anti-uplift of buildings, prestressed anti-uplift anchor piles are used to make the cement mixing piles, high-strength cement slurry, and steel strands bear the overall force, which improves the mechanical performance of the anti-uplift anchor piles, so as to achieve the overall strength of the building. The purpose of pulling out.

[0032] The cement mixing pile is formed by the cement mixer drilling rig. Aft...

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Abstract

The invention discloses a prestress pulling resistant anchor pile and a constructing method thereof. The constructing method is characterized by comprising the following steps: (1) constructing a cement stirring pile; (2) pre-drilling: after cement stirring pile construction is finished, a small-bore diameter driller is immediately taken to pre-drill, and the driller jets slurry and fully stirs in the center of the stirring pile; (3) drilling an anchor hole: an anchor rod driller drills after 12 hours to 14 hours of the cement stirring pile construction finishing, and the drilling speed is 200 mm / min; (4) milling a hole; (5) leading an anchor rod to penetrate through the hole; (6) grouting: the first grouting amount is based on filing up the hole, and the fullness coefficient reaches more than 1.2; after the initial setting strength of first slurry reaches 5.0MPa, the secondary high-pressure grouting can be carried out by a high-pressure grouting pipe; (7) locking stretching by a secondary stretching method; (8) leading an anchor to penetrate; (9) sealing the anchor; and (10) carrying out anticorrosive processing. The invention has high practicability and favorable social benefits.

Description

technical field [0001] The invention relates to the construction field, in particular to a prestressed anti-lift anchor pile and a construction method. Background technique [0002] In areas with abundant groundwater, when the building basement foundation elevation is low or the structure foundation elevation is low, the foundation floor will be subject to greater buoyancy. In order to prevent the foundation floor from floating, uplift-resistant anchor piles are usually used. The force of the traditional uplift-resistant anchor pile is transmitted from the top of the pile to the bottom of the pile, and the force of the anchor pile changes with the change of the groundwater level, which is not conducive to the long-term uplift resistance of the anchor pile. Prestressing technology can be used to pre-apply the required maximum pullout force to the anchor pile, so that the force of the anchor pile can be transmitted from the bottom of the pile to the top of the pile. In this ...

Claims

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Application Information

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IPC IPC(8): E02D5/54E02D5/58E02D31/12C04B28/00
Inventor 朱奎
Owner 朱奎