X-brace type energy dissipation device

Abstract

The invention discloses an X-brace type energy dissipation device which comprises core battens, lug plates, dowels, gaskets, an upper ejection plate and a lower ejection plate. Each sliding contact position is provided with antifriction materials. The core battens are arranged in a crossed mode and in pairs. Designers can selection reasonable pair numbers of the core battens according to needs. According to the X-brace type energy dissipation device, axial deformation of the core battens is utilized to dissipate seismic energy, the lug plates mainly play a role of fixing, and the dowels in the centers of the core battens play a role of enabling every two core battens to be connected, when one core batten is pressed, the computation length can be reduced by utilizing connection dowels of the pulled core battens, and then buckling instability can be avoided. The pair numbers of the core battens can be adjusted according to requirements of project designs, and then the energy dissipation device can be used.

Description

technical field [0001] The invention relates to a shock absorbing device for construction engineering, in particular to a support type energy dissipator. Background technique [0002] Metal energy dissipator is a common type of energy dissipator, which uses metal buckling to absorb seismic energy. Due to its advantages of stable performance, low cost and convenient processing, it has been widely used at home and abroad in recent years. [0003] The metal energy dissipators widely used at present mainly include tension and compression type, bending type and shear type energy dissipator. Among them, the shear-type energy dissipator has high rigidity and is easy to control the lateral movement, but it is prone to out-of-plane buckling, resulting in pinching of the hysteretic loop, which cannot achieve full-section yield, and there are obvious stress concentrations at the corners, which are prone to early occurrence Cracks greatly weaken the fatigue life of the energy dissipato...

AI Technical Summary

Problems solved by technology

Among them, the shear-type energy dissipator has high rigidity and is easy to control the lateral movement, but it is prone to out-of-plane buckling, resulting in pinching of the hysteretic loop, which cannot achieve full-section yield, and there are obvious stress concentrations at the corners, which are prone to early occurrence Cracks greatly weaken the fatigue life of the energy dissipator and affect the normal operation of the energy dissipator

In addition, the energy dissipation parts and fixed parts of this energy dissipator are mainly welded, and there are residual stresses, and the local residual stress may have made the material yield, thus significantly affecting the shock absorption effect of the energy dissipator

In order to solve this problem, the engineering community has proposed three solutions: 1. Welding stiffeners, this method has residual stress and deformation; 2. Slits, this method will cut off the tension field, thereby weakening the stiffness; 3. Set up another device Constrained out-of-plane deformation, the method is complex in construction

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