Assembly type steel frame connection node with post-seismic recoverable function

Abstract

The invention discloses an assembly type steel frame connection node with a post-seismic recoverable function. A frame steel column comprises a column body and an outward extending short beam which are vertically fixedly connected, a post-seismic replaceable energy consumption connecting plate comprises an upper flange cover plate, a lower flange cover plate and a web cover plate, an upper flange of the outward extending short beam is fixedly connected to an upper flange of a body steel beam through the upper flange cover plate, an lower flange of the outward extending short beam is fixedly connected to a lower flange of a body steel beam through the lower flange cover plate, and a web of the outward extending short beam is fixedly connected to a web of the body steel beam through the web cover plate; a gap reserved between the outward extending short beam and the body steel beam is filled with a rubber pad plate; the upper flange of the body steel beam is fixedly connected to a concrete floor slab through a lift-resistant tooth-and-slot plate connecting piece. Through the double effects of connection and energy consumption exerted by the post-seismic replaceable energy consumption connecting plate, the structural damage and failure mechanism are actively controlled, it is guaranteed that the body structure keeps elasticity, damage occurs on a specified position, as a replaceable component, the post-seismic replaceable energy consumption connecting plate facilitates post-seismic replacement and repair, and a shear force connecting piece guarantees structural integrity and full exertion of combined stressed performance.

Description

technical field [0001] The invention relates to the technical field of lateral force-resisting structures, in particular to a post-earthquake recoverable function assembled steel frame connection node. Background technique [0002] The seismic performance of steel frame beam-to-column joints is of great significance to improve structural ductility, prevent brittle failure, and improve structural seismic capacity. Therefore, in order to avoid the occurrence of plastic hinges at welded joints with poor toughness, it is better to move the plastic hinges of the beam away from the welded joint area, so that the structure can undergo ductile failure and avoid brittle failure. There are two ways to move the plastic hinge outward: one is to locally weaken the beam section at a certain distance from the beam root, such as: "dog bone" joints, web open joints, open long groove joints, and welding hole expansion The other is to locally strengthen the joints, for example: flange thicken...

AI Technical Summary

Problems solved by technology

At present, studs are the most commonly used shear connectors, but a large number of studs all need to be welded by hand, which is not conducive to rapid construction, and the welding quality is difficult to guarantee

Although the traditional straight shear connector has better longitudinal deformation performance, the pullout performance of the connector is significantly reduced after the notch is set.

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