Manufacturing method for fiber reinforced plastic (FRP) stirrup

Abstract

The invention discloses a manufacturing method for a fiber reinforced plastic (FRP) stirrup. The FRP stirrup comprises multiple FRP ribs. The manufacturing method for the FRP stirrup comprises the following steps that A, a two-dimensional plane model of the FRP stirrup is built on a computer; B, the parameter of each FRP rib is input into the computer; C, a control program of printing equipment connected with the computer is used for reading the two-dimensional plane model of the FRP stirrup and the parameter of each FRP rib; D, the printing equipment automatically selects the fiber types and calculates the laying amount, layer number of layering and laying paths of fibers according to the two-dimensional plane model and the parameters; and E, the printing equipment automatically finishes fiber gum dipping, laying of fiber bundles and heating and curing molding, so that the FRP stirrup is obtained. The manufacturing method for the FRP stirrup has the advantages of being simple in process, high in manufacturing speed, simple in equipment, convenient to implement on a construction site and capable of easily manufacturing the FRP stirrup with the complex section.

Description

Technical field [0001] The invention relates to the field of construction, in particular to a method for manufacturing FRP stirrups. Background technique [0002] In reinforced concrete structures, stirrups play an important role in resisting shear, reducing cracks, forming steel cages, preventing longitudinal reinforcement from buckling, and restraining core concrete. Therefore, using lightweight and high-strength FRP bars as stirrups can greatly improve the performance of the stirrups, thereby improving the performance of concrete members equipped with FRP bars. On the other hand, since the stirrups are located on the outermost side of the concrete structure and are more sensitive to external corrosion, the use of corrosion-resistant FRP bars instead of the original steel stirrups can better solve the corrosion problem, making the concrete structure suitable for use in the ocean In environments with more severe corrosion. [0003] At present, one of the important reasons restri...

AI Technical Summary

Problems solved by technology

Due to the nature of FRP itself and the limitation of processing technology, it is difficult to carry out secondary processing or size adjustment on the construction site for the factory prefabricated FRP stirrups. Once the size deviation occurs, the prefabricated stirrups cannot be used. Therefore, it is unrealistic to completely use factory prefabrication of

On the other hand, for stirrups with complex layout, such as well-tac-toe composite stirrups, circular nested stirrups, etc., it is difficult and costly to produce according to the traditional FRP stirrup production process

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