Multi-direction shape memory alloy, soft steel and lead combined drum-like damper

Abstract

The invention provides a multi-direction shape memory alloy, soft steel and lead combined drum-like damper and relates to a shock absorption control device in the technical fields of building structures and mechanical engineering. The damper comprises a drum-like shape memory alloy outer cylinder, a circular soft steel inner cylinder, an upper end plate, a lower end plate, a built-in lead damper and a superplastic shape memory alloy wire for coordinating the inner cylinder and the outer cylinder. The damper adopts the external drum-like shape memory alloy cylinder, the circular soft steel inner cylinder, the built-in lead damper and the superplastic shape memory alloy wire which is arranged like a Chinese character mi for coordinating the inner cylinder and the outer cylinder. The damper has the advantages of large recoverable deformation, strong damping capacity, good durability, anti-corrosion property and anti-fatigue performance, a large range of working temperature, low maintenance cost and the like, has the horizontal, vertical and torsional automatic reset functions, and can perform energy dissipation and shock absorption on wind vibration and earthquake in horizontal and vertical directions and further play a good protection role for a building structure when the earthquake and the wind vibration occur.

Description

technical field [0001] The invention relates to a building structure vibration control device, in particular to a building structure vibration control multi-directional shape memory alloy, mild steel and lead composite drum 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 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 structural vibration through the yield hysteresis energy dissipation of the metal, so as to achieve the purpose of reducing the structural response. [0003] The mild steel damper is to make full use of the good hysteresis characteristics of mild steel after entering the plas...

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Problems solved by technology

Chinese Patent No. 200810137193.X discloses an invention patent named "Shape Memory Alloy Damper"; Chinese Patent No. 03111064.9 discloses an invention patent named "Conical Shape Memory Alloy Damper", and Chinese Patent No. 200610200568.3 An invention patent named "Hybrid Shape Memory Alloy Damper" is disclosed; Chinese Patent No. 200710010925.4 discloses an invention patent named "Self-resetting Superelastic Shape Memory Alloy Damper"; Chinese Patent No. 200910011071.0 discloses An invention patent named "anti-torsion self-resetting lead core shape memory alloy damper"; they are all unidirectional, or can only control the horizontal direction, and are not easy to realize earthquake, wind or mechanical vibration of engineering structures, etc. control

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