Self-resetting buckling-restrained brace and energy dissipation method thereof

Abstract

The invention belongs to the technical field of construction energy dissipation structures and relates to a self-resetting buckling-restrained brace which comprises a central positioning plate and second-stage buckling-restrained units located on the left side and the right side. Each second-stage buckling-restrained unit comprises a connecting joint, a supporting core component, an outer sleeve steel pipe, a sliding bearing plate, a fixed bearing plate, a stable steel bar, a steel frame support, a belleville spring and a friction plate. The supporting core component, the sliding bearing plateand the stable steel bar are sequentially connected and slide in the outer sleeve steel pipe. The middle part of the supporting core component penetrates through the outer sleeve steel pipe; the outer end of the supporting core component is fixedly connected with the connecting joint; the fixed bearing plate, the steel frame support and the central positioning plate are sequentially connected, and the inner end of the stable steel bar penetrates through the fixed bearing plate; the friction plate in contact with the stable steel bar is arranged between the fixed bearing plate and the centralpositioning plate; and the compressed belleville spring sleeves outside the stable steel bar. The invention further relates to an energy dissipation method of the self-resetting buckling-restrained brace. The structure is simple, the bearing capacity of a main body structure is increased, and the self-resetting capacity is achieved.

Description

technical field [0001] The invention relates to an energy-dissipating and shock-absorbing structure of a building, in particular to a self-resetting anti-buckling support and an energy dissipation method for the self-resetting anti-buckling support. Background technique [0002] With the development of my country's industrialized cities and towns and the need for modernization, and with the recent frequent earthquakes, it has become a key task in the design of modern engineering structures to reduce the damage to people's lives and properties caused by the destruction of buildings during earthquakes. [0003] At present, the earthquake resistance of building structures generally adopts increasing the damping of the structure and setting up isolation layers to dissipate the energy of the earthquake on the structure. The traditional buckling-resistant bracing members are mainly composed of internal core materials, external restraint Composed of sliding interface, it has both t...

AI Technical Summary

Problems solved by technology

[0005] In fact, due to the large yield bearing capacity of the traditional buckling-constrained brace, when subjected to a small earthquake, the braced member cannot enter the buckling state in time, and cannot exert the energy dissipation capacity of the member

And the stiffness of the member degrades quickly after buckling

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