Lead dot squeezing type visco-elasticity friction damper

Abstract

The invention belongs to the field of vibration control of building structures, and particularly relates to a lead dot squeezing type visco-elasticity friction damper. The lead dot squeezing type visco-elasticity friction damper includes energy-consuming steel plates, energy-consuming ribs, built-in round holes, visco-elasticity friction energy-consuming base plates, connecting plates, connectingplate screw holes, lead dot holes, squeezing connection energy-consuming steel plates, lead dots and a built-in foamed aluminum squeezing energy-consuming steel plate. The built-in foamed aluminum squeezing energy-consuming steel plate is arranged on the middle portion of the lead dot squeezing type visco-elasticity friction damper. The lead dot squeezing type visco-elasticity friction damper hasthe beneficial effects that the initial rigidity is larger, the steel yielding area is large, the energy-consuming effect is good, and the steel utilization rate is high; and the squeezing connectionenergy-consuming steel plates squeeze each other, the squeezing connection energy-consuming steel plates squeeze the built-in foamed aluminum squeezing energy-consuming steel plate, the squeezing connection energy-consuming steel plates drive the energy-consuming steel plates to consume energy, the squeezing connection energy-consuming steel plates has sufficient friction with the visco-elasticityfriction energy-consuming base plates for energy consuming, so that the energy-consuming effect of the damper is better, multiple energy consumption effects are achieved, and the seismic response ofa building structure is reduced.

Description

technical field [0001] The invention belongs to the field of vibration control of building structures, in particular to a lead pin extrusion type viscoelastic friction 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 of this pr...

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Problems solved by technology

[0003] 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-dissipating 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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