Second-order enhanced coupling beam type metal damping shock absorption system

Abstract

The invention discloses a second-order enhanced coupling beam type metal damping shock absorption system. The second-order enhanced coupling beam type metal damping shock absorption system comprises a plurality of coupling beam soft steel dampers, the plurality of coupling beam soft steel dampers are distributed in a plurality of floors, and at least one coupling beam soft steel damper is arranged in each floor; each coupling beam soft steel damper comprises a first connecting plate and a second connecting plate, a first energy dissipation mechanism and a second energy dissipation mechanism are arranged between the first connecting plate and the second connecting plate, and the first energy dissipation mechanism comprises a first U-shaped energy dissipation plate and a second U-shaped energy dissipation plate; the second energy dissipation mechanism comprises a rectangular energy dissipation plate assembly; the first U-shaped energy dissipation plate and the second U-shaped energy dissipation plate are arranged on the two sides of the rectangular energy dissipation plate assembly; and the rectangular energy dissipation plate assembly is connected with the first connecting plate through a sliding support assembly. After the damping system is installed, the rigidity of lost parts of a building can be sequentially enhanced, the situation that the damage to the connecting beam damper part in a certain area is too large, and consequently an anti-seismic defense line is lost is avoided, and the overall structure is more convenient to replace and maintain.

Description

technical field [0001] The invention relates to the anti-seismic field of civil engineering, in particular to a second-order reinforced coupling beam metal damping system. Background technique [0002] Shear walls have the advantages of good structural integrity, no column corners for residential buildings, and convenient room settings. Therefore, they are widely used in building structures. However, under the action of strong earthquakes, the bottom of the wall and the middle of the coupling beam of the shear wall structure are severely damaged. If the coupling beam is the first line of anti-seismic defense, if the deformation is too large, it will be difficult to repair it after the earthquake. Under the earthquake action of the shear wall structure, the connecting beam or the connecting beam with conventional dampers is used as the first line of defense. If damage occurs, the deformation will further accumulate in the height area of ​​the damaged part, forming a weak part...

AI Technical Summary

Problems solved by technology

[0004] At present, the metal dampers used in the shear wall coupling beam structure are generally of the overall yield type, and the energy consumption stage is distributed in a single way, that is, the damper with a small yield displacement has already been damaged under a large earthquake and cannot perform the energy dissipation function; the damper with a large yield displacement The device cannot perform plastic energy dissipation in the elastic stage under medium and small earthquakes, resulting in continuous accumulation of damage on the main structure, which cannot be well applied to uncertain earthquakes

[0005] In addition, the second-order stiffness of the existing mild steel damper with staged yield is usually smaller than the first-order stiffness. If the center of some floors is too large, the damage will gradually accumulate after the damper is completely yielded, and each break will cause a large deformation of the structure, resulting in The local damage of the large earthquake is serious; and most of them rely on the low yield strength of steel with low yield point to classify energy consumption, which has high requirements for raw materials. After the earthquake, the entire damper needs to be replaced, and even the coupling beam will be deformed after the deformation is too large. too large to repair

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