Double cylinder type large-deformation tension and compression damper

Abstract

The invention belongs to the field of vibration control of building structures, in particular to a double cylinder type large-deformation tension and compression damper, comprising an upper plate, a lower plate, an upper plate screw hole, a lower plate screw hole, an external circular energy-consuming steel plate, an internal circular energy-consuming steel plate, a large circular soft steel energy-consuming inner cylinder, a coordinated connection steel bar, an end energy-consuming steel plate, an arc-shaped energy-consuming steel plate, a horizontal energy-consuming partitioning soft steel plate, an aluminum foam energy-consuming material, a lock nut, a small circular soft steel energy-consuming inner cylinder and a large curved energy-consuming steel plate. The damper adopts a double cylinder structure, the external circular energy-consuming steel plate at the outermost side of the damper adopts a circular cylinder structure, the internal circular energy-consuming steel plate at theinnermost side of the damper adopts a circular cylinder structure, and the two cylinders are coaxial. The damper has the beneficial effect of larger initial stiffness, larger material yielding dispersion area and strong damping capacity, and can weaken the seismic response of building structures through structure design of multiple energy energy-consuming in the vertical direction.

Description

technical field [0001] The invention belongs to the field of vibration control of building structures, in particular to a double-cylindrical large-deformation tension-compression damper. 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 some metals have elastic-plastic hysteretic deformation energy dissipation, 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 first began to study the use...

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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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