Metal and composite laminated damper

Abstract

The invention relates to a metal and composite laminated damper. The metal and composite laminated damper comprises a metal tube and connecting pieces correspondingly located at two ends of the metaltube, grooves are formed in the two connecting pieces, the end parts of the metal tube are fixedly and hermetically arranged in the grooves, the metal tube is filled with a plurality of viscous-elastic material layers and a plurality of rigid material layers, and the viscous-elastic material layers and the rigid material layers are sequentially and crosswise arranged up and down. The metal and composite laminated damper is a novel combined type metal damper, joint energy dissipation is achieved by using multiple energy dissipation mechanisms, the energy dissipation mechanisms are definite, andvarious energy dissipation capacities are achieved; the yield displacement is small, and the ductility performance is excellent; the performance is stable, and the energy dissipation efficiency is high; and installation and disassembly are convenient, and the arrangement is flexible.

Description

technical field [0001] The invention relates to building structure energy dissipation components, in particular to a laminated damper made of metal and composite materials. Background technique [0002] Mainly used in the field of shock absorption and isolation of construction engineering structures are laminated rubber bearings, lead rubber Elastic dampers and magnetorheological dampers, etc. Because a single damper has its disadvantages in use, it is the development trend of structural shock-isolation devices to combine two or more existing shock-isolation methods to maximize the strengths and avoid weaknesses to fully utilize the functions of different shock-isolation devices. [0003] Among them, the ordinary viscoelastic damper has the characteristics of simple structure, superior performance, low cost and good durability. However, the damping force provided by the viscoelastic damper is limited, and its ability to dissipate seismic energy is small, which is difficult...

AI Technical Summary

Problems solved by technology

However, since the steel pipe itself cannot provide good vertical stiffness and vertical bearing capacity, it is prone to buckling instability when subjected to earthquakes, and it is usually only used as an accessory component of the structure.

[0005] Among them, the disadvantages of the above-mentioned dampers are: (1) Since the metal materials are mostly metals with low yield points, their performance is not stable after yielding, and the energy dissipation effect will be greatly reduced; (2) Most metal dampers are in-plane and plane The large difference in external mechanical properties or even out-of-plane is the key factor leading to the failure of the damper. The advantages of the metal damper cannot be fully utilized, resulting in poor shock resistance and shock absorption effect.

(3) The lead extrusion type damper cannot provide good initial stiffness, and the lead is difficult to weld and pollutes the environment during processing

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