Multi-yield-point metal shear damper facing multiple disasters and multiple performance targets

Abstract

The invention relates to the technical field of building, in particular to a multi-yield-point metal shear damper facing multiple disasters and multiple performance targets. The multi-yield-point metal shear damper comprises a first energy dissipation piece and a second energy dissipation piece, the first energy dissipation piece sleeves the outer side of the second energy dissipation piece, and afixing piece and a stopping assembly are arranged between the first energy dissipation piece and the second energy dissipation piece; the first energy dissipation piece and the second energy dissipation piece are fixedly connected through the fixing piece, and the stopping assembly comprises a first stopping block and a second stopping block matched with the first stopping block; and the first stopping block is connected with one of the first energy dissipation piece and the second energy dissipation piece, and the second stopping block is connected with the other one of the first energy dissipation piece and the second energy dissipation piece, and used for making contact with the first stopping block and pushing the first stopping block to move in the shear force direction. When a structure suffers the disasters of different types and different levels, multi-stage energy dissipation and vibration reduction capability can be provided according to the deformation state of the structure, demands of the multiple performance targets of the building structure under the multiple disasters are met, seismic performance of the structure is improved, and the multi-yield-point metal shear damper adapts to the stiffness, carrying capacity and energy dissipation capacity required by the structure.

Description

technical field [0001] The invention relates to the technical field of construction, in particular to a multi-yield-point metal shear damper facing multi-hazard and multi-performance targets. Background technique [0002] Metal shear dampers are a common form of damper in shock-absorbing structures. At present, the working principle of the metal shear damper in the prior art is to use mild steel as the shear energy dissipation plate, and take advantage of its low yield strength and good ductility. Under the action of an earthquake, the damper enters yield earlier than the main structure , so that the cumulative plastic deformation of mild steel after yielding can be used to achieve the effect of dissipating seismic energy. [0003] Under the multi-load coupling effects such as wind load and earthquake load, the building structure has the design requirements of multi-performance objectives under different disaster levels. power and energy consumption. However, the metal sh...

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Problems solved by technology

However, prior art metal shear dampers are stiffer before yielding and significantly less stiff after yieldin

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