Double-cylinder type tension-compression energy dissipation damper with reset function

Abstract

The invention belongs to the field of building structure vibration control, and particularly relates to a double-cylinder type tension-compression energy dissipation damper with a reset function. Thedouble-cylinder type tension-compression energy dissipation damper comprises an upper plate, a lower plate, threaded holes A, threaded holes B, an external semicircle energy dissipation steel plate, an internal semicircle energy dissipation steel plate, a foamed aluminum energy dissipation material, connecting shafts, friction energy dissipation blocks, shape memory alloy and end energy dissipation steel plates. In the double-cylinder type tension-compression energy dissipation damper, a double-cylinder structure is adopted, the cylinder structure defined by the internal semicircle energy dissipation steel plate and the end energy dissipation steel plates is arranged in the cylinder structure defined by the external semicircle energy dissipation steel plate and the end energy dissipation steel plates, and the connecting shafts and the friction energy dissipation blocks are longitudinally symmetrically arranged in the cylinder structure defined by the internal semicircle energy dissipation steel plate and the end energy dissipation steel plates. The shape memory alloy has super strong deformation recovery ability, and stable damping force and the automatic reset function are provided for vibration of the damper in the vertical direction, and during an earthquake, the earthquake responses of a building structure can be reduced.

Description

technical field [0001] The invention belongs to the field of vibration control of building structures, in particular to a double-cylindrical tension-compression energy-consuming damper with reset function. Background technique [0002] Metallic yielding dampers are various forms of damping energy dissipators made of mild steel or other soft metal materials. Metals have good hysteretic properties after yielding, and the elastic-plastic hysteretic deformation energy dissipation of some metals is used, including mild steel dampers, lead dampers, and shape memory alloys (SMA) dampers. The mechanism of its vibration control on the structure is to dissipate part of the energy of the structure vibration through the yield hysteresis energy consumption of the metal, so as to reduce the structural response. The mild steel damper is to make full use of the soft steel after entering the plastic stage Good hysteresis characteristics. In 1972, American scholars such as Kelly and Skinner...

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Problems solved by technology

At present, the initial stiffness of many dampers is not large enough, the yield dispersion area of ​​the material is not large enough, and the design of the energy dissipation structure is not very sufficient, so that the energy such as kinetic energy or elastic potential energy of the structure cannot be fully converted into heat energy and dissipated. Many dampers are only It can increase the overall stiffness of the building structure during normal use, but when a large earthquake occurs, many dampers cannot meet the requirements of reducing the seismic response of the building structure

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