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Prestressed anchor rod anchoring structure for post-grouting of free section

A technology of anchoring structures and free sections, which is applied in the direction of foundation structure engineering, buildings, sheet pile walls, etc., to achieve the effect of improving anti-corrosion performance

Pending Publication Date: 2022-05-31
SHENZHEN GONGKAN GEOTECHN GRP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] The purpose of the present invention is to provide a prestressed bolt anchorage structure for post-grouting of the free section, aiming to solve the problem in the prior art that the piercing section of the prestressed bolt body is in an exposed state

Method used

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Embodiment Construction

[0022] In order to make the objectives, technical solutions and advantages of the present invention clearer, the present invention will be further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present invention, but not to limit the present invention.

[0023] The implementation of the present invention will be described in detail below with reference to specific embodiments.

[0024] The same or similar numbers in the drawings of this embodiment correspond to the same or similar components; in the description of the present invention, it should be understood that if there are terms such as "upper", "lower", "left", "right", etc. The indicated orientation or positional relationship is based on the orientation or positional relationship shown in the accompanying drawings, which is only for the convenience of describing the present inventio...

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Abstract

The invention relates to the technical field of pre-stressed anchor rod bodies, and discloses a pre-stressed anchor rod anchoring structure for post-grouting of a free section, the pre-stressed anchor rod anchoring structure comprises an anchor rod drill hole, an anchor seat and a pre-stressed anchor rod body, and an isolation plate is arranged between the free section and an anchoring section; the pre-stressed anchor rod body is provided with a primary grouting pipe and a post grouting pipe, the bottom of the primary grouting pipe extends to the bottom of the anchoring section, and the top of the primary grouting pipe is located below the anchor base. The post-grouting pipe is positioned above the isolation plate; cement paste is poured into the exterior of the anchoring section for the first time through a primary grouting pipe, and the anchoring section and the stratum are anchored; cement paste is poured into the exterior of the free section and the penetrating hole for the second time through the post-grouting pipe, a free cement section for anchoring the free section and the stratum is formed, the free cement section wraps the penetrating section and the free section, the anti-corrosion protection effect is achieved, the free cement section is bonded with the stratum, the free section generates bonding force, and if the penetrating section is corroded and damaged, the free cement section cannot be damaged. And the free section is not damaged, so that the anti-corrosion performance of the pre-stressed anchor rod body is greatly improved.

Description

technical field [0001] The patent of the present invention relates to the technical field of the prestressed anchor rod body, in particular, to the prestressed anchor rod anchoring structure of post-grouting of the free section. Background technique [0002] Along the direction from the inside to the outside, the prestressed anchor rod body includes an anchoring section, a free section, a piercing section and an extension section. The anchoring section is anchored with the stratum, the free section is in a free tension state, and the piercing section is pierced in the The anchor seat is connected with an anchor tool on the extension section, and the anchor tool fixes the extension section and the anchor seat. [0003] In the prior art, the free section is wrapped with a plastic sleeve, and the space between the sleeve and the free section is filled with anti-corrosion lubricating oil. The lubricating oil can make the free section anti-corrosion, and when the prestressed anch...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): E02D5/74
CPCE02D5/74
Inventor 付文光郭海伦周明佳莫森升李伟林桂森邓义信
Owner SHENZHEN GONGKAN GEOTECHN GRP
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