Steel frame precast prestressed beam column joint with post-earthquake recovering function

Abstract

The invention relates to a steel frame precast prestressed beam column joint with a post-earthquake recovering function. The joint comprises a steel frame column, a short beam section, a beam column connection device and an energy consumption device, wherein the steel frame column comprises a steel column, a column reinforced rib and a column reinforced plate; the short beam section comprises a short beam section web, a short beam section flange and a short beam section flange reinforced plate; the beam column connection device comprises a short beam section web reinforced rib, a prestressed cable and a beam end top plate; the energy consumption device comprises two channel steels and a high-strength bolt; and the two short beams are integrally connected with the column in a factory through a tension prestressed cable and two short beam section web reinforced ribs. When the earthquake action achieves a certain degree, the contact surface of the beam and the column is opened; the high-strength bolt is in friction energy dissipation so as to avoid destroying main components, such as beams and columns After the earthquake, the beams can be recovered to the former vertical position under the action of the prestress.

Description

Technical field: [0001] The patent of the invention relates to a steel structure node, in particular to a steel frame prefabricated prestressed beam-column node with recoverable functions after an earthquake applied in the field of building structures. Background technique [0002] Steel frame beam-column joints are widely used in seismic steel structures. The traditional steel frame beam-column rigid joints are divided into two types. Site welding, the beam web and the splice plate are connected by high-strength bolts, and the splice plate and the flange of the steel column are welded at the factory; Beams and frame beams are bolted and welded at the construction site or fully bolted. However, these two types of beam-column joints are prone to brittle failure due to unprotected beam end welds after earthquakes. In recent years, the improved steel frame beam-column joints, such as strengthening and weakening, can achieve the purpose of plastic hinge moving outward during st...

AI Technical Summary

Problems solved by technology

However, the existing recoverable functional steel frame system requires on-site tensioning of prestressed cables, which not only increases the construction difficulty of the steel frame, but also prolongs the construction time of the steel frame, thus hindering the recoverable functional steel frame structure system to a certain extent. Application in practical engineering

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