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Mechanical anchoring method for FRP profile in FRP reinforced concrete composite structure

A reinforced concrete and composite structure technology, applied in the direction of structural elements, building components, building structures, etc., can solve the problems of low utilization rate of profile plate strength, quality cannot be guaranteed, and low anchoring efficiency.

Active Publication Date: 2021-07-06
ZHEJIANG UNIV
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Because the FRP profile is often sheared off due to the extrusion of concrete or bolt rods in the hole, the strength utilization rate of the profile plate is low
[0003] In summary, the current FRP profile anchoring methods in the field of concrete structures still have the disadvantages of low anchoring efficiency and unguaranteed quality, so a new anchoring method for FRP profile-reinforced concrete composite structures is needed

Method used

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  • Mechanical anchoring method for FRP profile in FRP reinforced concrete composite structure
  • Mechanical anchoring method for FRP profile in FRP reinforced concrete composite structure
  • Mechanical anchoring method for FRP profile in FRP reinforced concrete composite structure

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Embodiment Construction

[0039] The present invention will be further described below in conjunction with the accompanying drawings and specific embodiments. 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. The operating methods not indicated in the following examples are generally in accordance with conventional conditions, or in accordance with the conditions suggested by the manufacturer.

[0040] Such as figure 1 , 2 As shown, the integral mechanical anchoring method uses a plurality of high-strength bolts 4 to fix the steel bearing plate 3 covering the entire anchoring area on the FRP profile 2 to realize the anchorage of the FRP profile in the concrete 1 .

[0041] Such as image 3 , 4 As shown, the distributed mechanical anchoring method uses a single high-strength bolt 4 to fix two smaller steel bearing plates 3 on the FRP profile 2, and realizes the anchoring of the FRP profile t...

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Abstract

The invention discloses a mechanical anchoring method for an FRP profile in an FRP reinforced concrete composite structure. The mechanical anchoring method comprises the following steps that the surface of an anchoring area of the FRP profile is cleaned, a bolt hole is formed at a bolt connecting position according to the design, and epoxy resin is uniformly smeared on the anchoring area after dust is removed; two steel bearing plates are taken, bolt holes are formed in the positions of bolts according to design, and one faces of the two steel bearing plates are correspondingly subjected to roughening treatment; the rough surfaces of the two steel pressure-bearing plates are bonded with the FRP sectional material through epoxy resin, the holes of the two steel pressure-bearing plates are aligned with the holes of the FRP sectional material, and high-strength bolts are used for penetrating holes and fixing the steel pressure-bearing plates and the FRP sectional material; and maintaining is carried out according to the maintenance time specified by the adopted epoxy resin adhesive, after maintenance is completed, pre-tightening force is applied to the high-strength bolts, and the machined FRP profile can be used for pouring of the FRP reinforced concrete composite structure through mechanical anchoring.

Description

technical field [0001] The invention relates to the technical field of building structure engineering, in particular to a mechanical anchoring method for FRP profiles in an FRP reinforced concrete composite structure. Background technique [0002] FRP profiles are made of epoxy resin as the matrix and high-strength fiber as the reinforcing material. They are processed through specific processes and have the characteristics of high strength, corrosion resistance, fatigue resistance and designability. They have been widely used in the field of architectural structural engineering (such as Publication number is the patent technology of CN 108863184 A, etc.). In concrete structure engineering, one of the reasons hindering the application of FRP profiles is that its surface is smooth and its bond with concrete is poor, resulting in low co-deformation ability with concrete structures. Since FRP profiles cannot be welded to increase mechanical anchorage, forms such as hole or bolt...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): E04C5/07E04C5/16
CPCE04C5/07E04C5/16
Inventor 赵唯坚杨元璋张大伟舒江鹏
Owner ZHEJIANG UNIV
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