Self-return energy-dissipating joint for beams and column

Abstract

The invention discloses a self-return energy-dissipating joint for beams and a column. The self-return energy-dissipating joint comprises the steel column, the middle beam, the short beam, connectingplates, a friction plate, a limiting device, a hinged support base and a high-strength anchor rod, wherein the steel column is vertically arranged, and the middle beam is transversely arranged; one end of the short beam is fixedly connected to the steel column, and a gap is formed between the other end of the short beam and the middle beam; the two connecting plates are separately positioned at the two sides of a web of the short beam and a web of the middle beam; the friction plate is cushioned between the web of the short beam and the connecting plates; the limiting device is a barrel body or a rack body which is fixed to the bottom surface of the lower wing edge of the middle beam, and is provided with through holes in two sides; the hinged support base is fixed on the steel column; oneend of the high-strength anchor rod is hinged with the hinged support base, and the other end of the high-strength anchor rod passes through the through holes of the limiting device; and a disc-shaped spring group sleeves the high-strength anchor rod, and the two ends of the high-strength anchor rod are symmetrically provided with the limiting steel plate and the high-strength nut in a sleeved mode. Pre-pressing force is applied to the disc-shaped spring group, so that the beam and the column have self-return ability; during a strong earthquake, the short beam is hinged with the middle beam to rotate and rub to dissipate energy; and the disc-shaped spring group under the beam column joint realizes self-return.

Description

technical field [0001] The invention relates to the technical field of energy-dissipating and shock-absorbing systems, and more specifically relates to a beam-column self-resetting energy-dissipating node. Background technique [0002] Due to the frequent occurrence of earthquakes and the increasing emphasis on structural safety in modern safety standards, the existing beam-column joint structures tend to use self-resetting structures. The self-resetting structural system mainly restores the structure to its original position by setting a prestressing device in the structure to reduce the residual displacement. The swing structure system prevents the occurrence of weak layers through the overall swing of the structure, so that the deformation of each layer of the structure tends to be consistent, and the distribution of structural damage is more uniform. However, we know that the traditional beam-column joints will be damaged and residual deformation occurs in every earthqu...

AI Technical Summary

Problems solved by technology

We know that the traditional beam-column joints will be damaged and residual deformation will occur in every earthquake, some elastic deformation recovery is slow, and it is more likely to produce unrecoverable plastic deformation

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