Smooth FRP bar anchoring method

An anchoring method and bar technology, which are used in the analysis of materials, the use of stable tension/pressure to test the strength of materials, and the measurement device, etc., can solve the problem of pulling and sliding at the anchoring end of the smooth FRP bar. The strength and complexity of the FRP bar on the surface can be solved, so as to achieve the effect of reliable anchoring performance, reducing deformation and reducing transmission.

Active Publication Date: 2020-04-17
SOUTHEAST UNIV
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Problems solved by technology

[0004] The present invention aims at the failure of existing FRP bar anchoring methods to give full play to the strength of the smooth FRP bar, the pull-slip failure and anchoring of the smooth FRP bar anchorage end. To deal with problems such as complex process, a smooth FRP rod anchoring method is proposed

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Embodiment Construction

[0036] Below in conjunction with the accompanying drawings, the specific embodiments of the present invention are further explained in detail. It should be understood that these embodiments are only used to illustrate the present invention and are not intended to limit the scope of the present invention. After reading the present invention, those skilled in the art will understand the present invention. Modifications in various equivalent forms fall within the scope defined by the appended claims of the present application.

[0037] The technical problem to be solved by the present invention is to overcome the problems that the existing FRP bar anchoring method cannot fully exert the strength of the smooth FRP bar, and the smooth FRP bar anchorage end is slipped and damaged, and proposes a method that can give full play to the smooth surface. The tensile strength of FRP rods, and the new smooth FRP rod tensile strength anchoring method that makes it ideal for the middle section...

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Abstract

The invention discloses a smooth FRP (fiber reinforced plastic) bar anchoring method which comprises the following steps: 2-4 kerfs for dividing an anchoring end of a smooth FRP bar into a plurality of parts capable of being opened are formed in the anchoring end of the smooth FRP bar along the axial direction of the bar from the end surface; filler is arranged among a plurality of expandable parts of the anchoring end to enable the anchoring end to form an expanded end, and the expanded end is anchored through a sleeve arranged at the anchoring end in a sleeving mode. The sleeve is a steppedinner-diameter sleeve and comprises a sleeve free end and a sleeve loading end, and the inner diameter of the sleeve free end is larger than that of the sleeve loading end; the expanded end is a conical expanded end; a resin-quartz sand mixture is poured into a gap between the free end of the sleeve and the conical expanded end, and the gap between the loading end of the sleeve and the smooth FRPbar is filled and cured with resin. According to the smooth FRP bar anchoring method, anchoring and connecting of the smooth FRP bars can be effectively and reliably achieved, the tensile strength ofthe smooth FRP bars is brought into full play, and the smooth FRP bars are subjected to ideal middle section complete explosion breaking type damage.

Description

technical field [0001] The invention relates to an anchoring method for smooth FRP rods, belonging to the field of composite material anchoring, and in particular to an anchoring method for smooth FRP rods. Background technique [0002] FRP rods are rod-shaped fiber-reinforced composite products that are made of high-strength continuous fibers as reinforcing materials, combined with resins, fillers and other substrates, and formed by pultrusion, entanglement or weaving methods. They are divided into smooth rods and threaded rods. Bars, sandblasting composite bars, etc. FRP rod has the advantages of light weight, high strength and corrosion resistance. It is a new generation of structural materials for civil engineering and traffic engineering. It is also an attractive structural material in harsh environments. At the same time, it is widely used in aerospace and other fields. . Smooth rods have good application prospects in the field of external prestressed FRP reinforceme...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01N3/04G01N3/08
CPCG01N3/04G01N3/08G01N2203/0266G01N2203/0017G01N2203/0429
Inventor 汪昕史健喆刘长源吴智深张磊朱中国
Owner SOUTHEAST UNIV
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