Segmented tooth-shaped constrained energy dissipation joint

Abstract

The invention belongs to the technical field of steel structures, and provides a segmented tooth-shaped constrained energy dissipation joint. The segmented tooth-shaped constrained energy dissipation joint comprises a column, a long beam section, a short beam section and an energy dissipation section, wherein the long beam section and the short beam section are connected by virtue of the energy dissipation section through a high-strength bolt group, the energy dissipation section comprises a flange connecting piece and a web connecting piece, energy is dissipated by means of yielding of an energy dissipation plate, and a constrained jacket with a tooth-shaped bulge is arranged on the flange connecting piece. Under the earthquake, the plastic deformation of the structure can be controlled on the energy dissipation section, and additionally, the tooth-shaped constraint exists, so that the condition that the energy dissipation performance is reduced due to excessive buckling of the energy dissipation section is avoided, and main components of the structure always keep elastic. The joint has the advantages of good energy dissipation effect, small overall size, no influence on the structural space layout, the simple structure and easiness and convenience in machineing, and the structure can be recovered for use only by replacing the energy dissipation section during post-earthquake repair.

Description

technical field [0001] The invention relates to the technical field of steel structures, in particular to a segmented tooth-shaped restraint energy-dissipating node. Background technique [0002] In the development, design, construction and promotion of prefabricated steel structures, sufficient attention must be paid to the seismic performance of the structure. The new nodes, components, parts, and systems of fabricated steel structures are constantly developing, from "strong columns and weak beams" to setting weakening points to avoid brittle failure, and to many designers innovatively replacing weakening points with energy-consuming nodes. [0003] In traditional energy-dissipating nodes, the restraint devices set up to limit the deformation of energy-dissipating devices often restrict the nodes as a whole. Although this kind of restraint has a good effect on restricting deformation, it has the following defects: ①The device processing is complicated; ②The body shape Lar...

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Problems solved by technology

[0003] In traditional energy-dissipating nodes, the restraint devices set up to limit the deformation of energy-dissipating devices often restrict the nodes as a whole. Although this kind of restraint has a good effect on restricting deformation, it has the following defects: ①The device processing is complicated; ②The body shape Larger, occupying the structural headroom, affecting the structure of other components in the structure, such as floors, etc.; ③ Since the restraint device is integral, the load is often dispersed to the restraint device and cannot be concentrated in the energy-dissipating section, thus affecting the energy consumption of the entire node. Energy effect

[0004] On this basis, some designers have also proposed a decentralized restraint device. Although this device reduces the difficulty of the device and solves the problem of scattered loads, but because it only divides the integral device, it will form A part of the unconstrained section, the energy dissipation plate in this part is prone to buckling during the compression process, and its deformation capacity is greatly reduced, resulting in excessive deformation of the energy dissipation device, which cannot provide a good energy dissipation effect

[0005] The above technical defects make the nodes unable to guarantee a good energy dissipation effect. At the same time, there are disadvantages such as occupying structural clearance, affecting structural layout, complex processing, weak ability to limit deformation, and distributed loads.

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