High-ductility FRP beam column joint connected through sleeve

Abstract

The invention discloses a high-ductility FRP beam column joint connected through a sleeve and belongs to the technical field of civil construction. The high-ductility FRP beam column joint comprises an FRP column, an FRP beam, a pair of end plates, the sleeve, four pairs of penetration bolts, a plurality of high-strength friction bolts and epoxy resin adhesives. The end plates are connected to theleft and right sides of the FRP column. The left and right sides of the FRP column and the end plates are provided with four pairs of first conventional bolt round holes correspondingly. The four pairs of penetration bolts are in threaded connection between the four pairs of the four pairs of first conventional bolt round holes correspondingly. The sleeve is welded to the right end of one end plate. The sleeve is inserted into the FRP beam. The FRP beam and the sleeve are connected through the epoxy resin adhesives and the high-strength friction bolts. The upper and lower surfaces and the side surfaces of the FRP beam and the sleeve are provided with a plurality of second conventional bolt round holes. The high-ductility FRP beam column joint can protect the FRP beam or the FRP column against brittle fractures in the joint area under the action of a rare occurrence earthquake.

Description

technical field [0001] The invention relates to the technical field of civil engineering, and more specifically relates to a high-ductility FRP beam-column joint connected by sleeves. Background technique [0002] FRP, Fiber Reinforced Plastics, is the abbreviation of English (Fiber Reinforced Plastics), existing CFRP, GFRP, AFRP, BFRP and so on. In Chinese, glass fiber refers to GFRP. FRP composite materials are high-performance materials formed by mixing fiber materials and matrix materials in a certain proportion. Among them, GFRP has different types of resins used, such as polyester fiberglass, epoxy fiberglass, phenolic fiberglass and so on. Generally, FRP has the characteristics of light and hard, non-conductive, high mechanical strength, less recycling, and corrosion resistance. With the advancement of social science and technology, the development of civil engineering structure has benefited to a large extent from the application and development of new materials a...

AI Technical Summary

Problems solved by technology

[0003] The beam-column joints are the key parts of the frame structure. Under the action of earthquakes, the weakest and most easily damaged parts are the beam-column joints of the frame. The damage of the joints will cause the entire frame structure to lose its bearing capacity. Therefore, the mechanical properties of the joints determine the The seismic performance of the entire frame structure, but the existing beam-column joints do not have better ductility and energy dissipation capacity

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