Anti-corrosion prefabricated grouting anchor rod for highly corrosive environment

A corrosion-resistant and strong-corrosion technology, applied in the field of corrosion-resistant prefabricated grouting bolts, can solve the problems of inability to guarantee anti-corrosion performance, inability to be widely popularized and applicable, and high construction costs, achieving huge economic and social benefits, simple structure, and high construction cost. The effect of anti-corrosion properties

Inactive Publication Date: 2016-10-26
广东省建科建筑设计院有限公司 +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The existing measures to improve the corrosion resistance of anchor bars are: (1) Coating (resin) plating (zinc) anti-corrosion layer on the surface of anchor bars, but the coating process can only be carried out in professional factories, anchor bars are in the process of transportation and construction , the anti-corrosion layer is easily damaged by friction and scratches, so that the anti-corrosion performance cannot be guaranteed; (2) There are also high-corrosion-resistant plastic materials and corrosion-resistant steel bars (stainless steel bars, rare earth bars, etc.) Expensive, resulting in high construction costs, unable to be widely applied

Method used

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  • Anti-corrosion prefabricated grouting anchor rod for highly corrosive environment
  • Anti-corrosion prefabricated grouting anchor rod for highly corrosive environment
  • Anti-corrosion prefabricated grouting anchor rod for highly corrosive environment

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Experimental program
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Effect test

Embodiment 1

[0030] Such as figure 1 and 2 As shown, it is a corrosion-resistant prefabricated grouting anchor rod 1 for strong corrosion environment of the present invention, including steel bar 2, steel bar 2 adopts ribbed steel bar, and the ribbed steel bar has spiral ribs, and the steel bar 2 is sleeved with The protective sleeve, in this embodiment, the protective sleeve is a plastic protective sleeve, and the plastic protective sleeve is protected by the corrugated sleeve 3 as the anchoring section of the anchor rod. There is a gap between the protective sleeve and the steel bar 2, and the anti-corrosion bonding material 9 is poured into the gap to form a solid columnar body, and then it is inserted into the bolt hole and filled with cement slurry 10 to form the bolt 1. The anti-corrosion bonding material 9 not only has anti-corrosion performance, but also can ensure that there is a strong enough bonding force between the protective sleeve and the steel bar, so that the two are conn...

Embodiment 2

[0035] Such as image 3 and 4 As shown, the difference between this embodiment and Embodiment 1 is that the protective sleeve adopts a corrugated sleeve 4 and a smooth sleeve 5, and the smooth sleeve 5 is set on one section of the steel bar 2 as a free section of the anchor rod. The casing 4 is set on the other section of the steel bar 2 as the anchoring section of the anchor rod, and one end of the smooth casing 5 extends between the end of the corrugated casing 4 and the steel bar 2 and is connected with the steel bar 2 and the corrugated casing 4 respectively. There is a gap between them, and epoxy resin is poured into all the gaps, that is, epoxy resin is poured between the corrugated sleeve 4 and the steel bar 2, between the smooth sleeve 5 and the steel bar 2, and between the corrugated sleeve 4 and the smooth sleeve 5 in the gap between.

[0036] In other embodiments, one end of the smooth sleeve is sleeved on the end of the corrugated sleeve and there is a gap betwee...

Embodiment 3

[0038] Such as Figure 5 As shown, the difference between this embodiment and Embodiment 1 is that there are two steel bars 2, and each steel bar 2 is provided with a protective sleeve as the first protective sleeve 6, and the ends of the two steel bars 2 are respectively Stretch out the first protective sleeves 6 respectively sleeved thereon and connect them through the connecting piece. In this embodiment, the connecting piece adopts a threaded sleeve 7, and a protective sleeve is set on the threaded sleeve 7 as the second protection. Sleeve 8, the two ends of the second protection sleeve 8 are respectively sleeved on the ends of the two first protection sleeves 6 and there is a gap between the first protection sleeve 6, specifically at the end of the steel bar 2 The thread processing forms the external thread 10, and the inner wall of the threaded sleeve 7 has an internal thread 11 adapted to the external thread on the steel bar 2, and the threaded sleeve 7 is screwed on the ...

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Abstract

The invention discloses an anti-corrosion prefabricated grouting anchor rod for a highly corrosive environment. The anti-corrosion prefabricated grouting anchor rod comprises a reinforcing steel bar. The reinforcing steel bar is sleeved with a protective casing. A clearance is reserved between the protective casing and the reinforcing steel bar. The clearance is filled with an anti-corrosion binding material to form a solid cylindrical object, then the cylindrical object stretches into an anchor rod drilling hole, and cement paste is poured in to form the anchor rod. According to the anti-corrosion prefabricated grouting anchor rod, the reinforcing steel bar is sleeved with the protective casing, and the clearance between the protective casing and the reinforcing steel bar is filled with the anti-corrosion binding material to be connected into a solid whole; due to arrangement of two anti-corrosion layers, corrosion resistance of the reinforcing steel bar is greatly improved, the reinforcing steel bar can be effectively prevented from being corroded under a severe environment condition, and therefore the service life is prolonged, and durability of the engineering structure is greatly improved; moreover, for the reason that anti-corrosion binding paste is used for binding the reinforcing steel bar and the protective casing, enough high binding force is guaranteed between the protective casing and the reinforcing steel bar, the requirements for anchor rod reinforcing steel bar corrosion resistance and pulling resistance in relevant industry standards can be met, and huge economic benefits and social benefits are achieved.

Description

technical field [0001] The invention relates to an anchor rod, in particular to a corrosion-resistant prefabricated grouting anchor rod used in a strong corrosion environment. Background technique [0002] Now the city is developing faster and faster, there are more and more high-rise and large buildings, and there are more and more basements. Under the action of water buoyancy, the single basement around the high-rise building or the basement with a low-rise podium often need to use anchor rods to resist floating. [0003] The anchor rod is an anchoring system that transmits the pulling force to a stable rock formation or soil. One end of it is connected to the engineering building, and the other end is deep into the stable rock formation or soil. Some anchor rods are divided into free section and anchor section, and there are only anchor sections. The free section is the part of the rod body that uses elastic elongation to transmit the tensile force to the anchor body; th...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): E02D5/74E02D31/12
CPCE02D5/74E02D31/12E02D2600/20
Inventor 徐其功陈春晖
Owner 广东省建科建筑设计院有限公司
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