A memory alloy self-resetting energy dissipation damper

Abstract

The invention discloses a memory alloy self-resetting energy-consuming damper. By arranging two relatively sliding inner and outer pulling and pressing plates, a self-resetting structure is formed by a vertical baffle and a limit baffle to connect the inner and outer pulling and pressing plates. The relative movement of the outer tension platen is transformed into the tension state of the memory alloy rod, and the material properties of the memory alloy rod are used to realize damping and buffering. When the force is too large, the friction layer between the inner tension platen and the outer tension plate acts together to dissipate The energy input of the structure, a large amount of energy is dissipated by friction deformation, which reduces the energy dissipation and absorption of the stressed components of the building structure during the earthquake, so as to protect the building structure. The memory alloy rod in the damper can realize damping after the earthquake The device returns to the initial state, so as to reduce or even eliminate the residual deformation of the building after the earthquake. This device can not only provide a large damping force, but also use memory alloy rods and friction layers to consume energy in stages, reducing the cost of the damper. It is suitable for The structural energy consumption demand at each stage.

Description

technical field [0001] The invention relates to the fields of concrete building structures and bridge structures, in particular to a memory alloy self-resetting energy dissipation damper. Background technique [0002] As a kind of extremely harmful natural disasters that human beings have faced for a long time, earthquakes are idiosyncratic and unpredictable. The large number of casualties and the damage or collapse of buildings caused by earthquakes will have great social and economic consequences. shock. When a building encounters a strong earthquake that is higher than the fortification intensity of the area, even if the overall integrity of the structure is maintained, due to excessive deformation and serious damage to some components, extensive reinforcement and repair is required, and even it can only be demolished and rebuilt. It has caused huge waste and affected people's normal life. In my country's seismic design codes, methods such as improving the stiffness and...

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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