Memory alloy self-restoring heat dissipation damper

Abstract

The invention discloses a memory alloy self-restoring heat dissipation damper. A first inner pulling and pressing board and an outer pulling and pressing board capable of sliding relatively are arranged. A self-restoring structure is formed by a vertical blocking board and a limiting blocking board set so as to convert relative motion of the inner pulling and pressing board and the outer pulling and pressing board to a pulled state of memory alloy rods. Damping cushion is realized by utilizing material performance of the memory alloy rods. When the stress is too large, friction layers betweenthe inner pulling and pressing board and the outer pulling and pressing board act in common so as to dissipate energy input of the structure, and dissipation of great energy is realized through friction deformation, and absorption of dissipated energy by stressed parts in a building structure in an earthquake is reduced, so that an effect of protecting the building structure is realized. The memory alloy rods in the damper can enable the damper after an earthquake to restore to an initial state, so that residual deformation of a building is reduced and even eliminated after the earthquake. Theinvention can provide comparatively large damping force and utilizes the memory alloy rods and the friction layers to dissipate energy in a graded manner. The cost of the damper is reduced and structural energy dissipation requirements of different phases are met.

Description

Technical field [0001] The invention relates to the field of concrete building structures and bridge structures, in particular to a memory alloy self-resetting energy dissipation damper. Background technique [0002] Earthquakes are a kind of extremely hazardous natural disasters that humans have faced for a long time. They are idiosyncratic and unpredictable. The large number of casualties and the damage or collapse of buildings caused by earthquakes will cause great social and economic consequences. Shock. When a building encounters a strong earthquake that is higher than the fortification intensity of the local area, even if the overall integrity of the structure is maintained, it needs a large-scale reinforcement and repair due to excessive deformation and severe damage to some components, and even can only be demolished for reconstruction. It caused huge waste and affected people's normal life. In my country’s seismic design code, the main methods of improving the stiffnes...

AI Technical Summary

Problems solved by technology

Existing SMA dampers mostly use iron-based memory alloy wire to provide self-resetting ability. This type of memory alloy needs to be heated to return to the state before deformation, and due to the small diameter, in order to achieve a certain self-resetting effect, the amount of SMA wire Larger, more complex structure, not easy to manufacture and process, and part of the SMA wire is idle in the state of tension and compression, and the utilization rate is not high. These reasons lead to poor overall energy consumption and self-resetting effects of the damper

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