Nested U-shaped staged yield damper

Abstract

The invention relates to a nested U-shaped staged yield damper, and belongs to the technical field of structural engineering energy dissipation and shock absorption. The metal damper is composed of two U-shaped energy dissipation parts which are nested in the same direction in the horizontal direction, a double-layer corrugated energy dissipation part, a brass base plate and a steel cushion block.According to the nested U-shaped staged yield damper, the design concepts that staged yield is adopted, energy dissipation parts can be replaced, the shear bearing capacity of the damper is improved,out-of-plane buckling is restrained, the structural rigidity is improved, and various energy dissipation mechanisms work together and the like are applied, and the limitation of a traditional metal damper is broken through. Staged yield is achieved through the nesting design of the U-shaped energy dissipation parts and the arrangement of the steel cushion block. Meanwhile, the reasonably designeddamper has good shear bearing capacity and energy dissipation performance, the normal use function can be recovered only by replacing the energy dissipation parts after an earthquake, and the economic benefit is obvious. The metal damper develops towards the assembling direction, replacement is convenient, arrangement modes are various, and the number of the metal dampers can be flexibly increased or decreased according to actual conditions.

Description

technical field [0001] The patent relates to a nested U-shaped yield damper in stages, which belongs to the technical field of energy dissipation and shock absorption in structural engineering. Background technique [0002] Earthquake is a natural disaster, which is sudden and destructive. The occurrence of strong earthquakes may cause huge economic losses and casualties. [0003] The traditional anti-seismic strategy is to achieve the function of resisting earthquakes by improving the strength, stiffness, ductility and other properties of the structure itself, while the metal energy dissipation damper uses different forms of plastic hysteretic deformation of metals to consume energy. After the state, it has good hysteresis performance and absorbs a lot of energy during the elastic-plastic hysteretic deformation process, so it is used to manufacture energy-dissipating shock absorbers of different types and structures. [0004] However, most of the existing metal dampers hav...

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Problems solved by technology

[0006] The present invention proposes a nested U-shaped yield damper in stages, aiming to solve the problem of concentrated yield points in the existing metal damper structure system, the inability to produce plastic energy consumption in small earthquakes, and the inability to achieve staged yield in the overall damage of large earthquakes , After the earthquake, it needs to be replaced as a whole, the energy consumption mechanism is single, and the out-of-plane stability is insufficient, etc.

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