Device for bending FRP rib on site and bending method

A bending, on-site technology, applied in measuring devices, applications, household components, etc., can solve problems such as bending FRP bars, and achieve the effect of improving accuracy, saving production costs, and expanding the scope of application
CN112008959AActive Publication Date: 2020-12-01CHANGAN UNIV
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
CHANGAN UNIV
Publication Date
2020-12-01

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Abstract

The invention discloses a device for bending an FRP rib on site and a bending method. The device for bending the FRP rib comprises a remelting curing pipe and an ultrasonic crushing pipe, wherein a plurality of grooves are formed in the inner wall of the remelting curing pipe in the length direction, resistance wires are arranged in the grooves, a plurality of ultrasonic flaw detector probes are arranged on the inner wall of the remelting curing pipe in the length direction, and the ultrasonic flaw detector probes are electrically connected with an ultrasonic flaw detector main machine; a plurality of columns of ultrasonic vibrators are mounted in the ultrasonic crushing pipe and are electrically connected with an ultrasonic generation power supply. By utilizing the characteristics that the epoxy resin for forming the FRP rib cannot be bent after being cured, while the fiber can be bent, and the strength of the fiber is larger than that of the epoxy resin, epoxy resin in the FRP rib iscrushed by using ultrasonic waves without damaging the fiber by using a large strength difference between the fiber and the epoxy resin, then the epoxy resin is remelted, the FRP rib is bent into a required shape, and cured to obtain the FRP rib formed by bending.
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Description

technical field

[0001] The invention belongs to the technical field of on-site construction, and in particular relates to a device and a bending method for bending FRP bars on site. Background technique

[0002] FRP bar is a new type of composite material prepared with continuous fiber as reinforcement and epoxy resin as matrix, which is prepared through processes such as infiltration and curing. FRP bars are composed of three parts: continuous fibers, resin matrix and outer FRP fiber bundles. They have the characteristics of high tensile strength, low density, good corrosion resistance, and excellent fatigue resistance. They are used as a new type of structural material in the civil engineering industry. , the use of FRP bars to replace ordinary steel bars is a new round of changes in the civil engineering industry.

[0003] However, due to the poor plasticity of the FRP bars themselves, it is difficult to carry out secondary shaping once they are processed and formed in t...

Claims

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