复合型阻尼器研究进展

近些年来,地震频繁发生,而阻尼器由于具有较好的减震效果,在地震发生时发挥重要作用,因而其应用越来越广泛。目前,国内外学者对单一耗能机制的阻尼器的相关研究较多,对复合阻尼器的研究起步较晚。复合型阻尼器种类少、研究系统性不强、其在实际工程中的应用较少。相较于单一形式的阻尼器,复合型阻尼器由两种类型阻尼器或者多种耗能材料构成,可以实现分阶段耗能、自复位、双向耗能等目标。本文对复合型阻尼器进行了分类,主要分为SMA(Shape Memory Alloys,形状记忆合金)-摩擦复合阻尼器、金属-摩擦复合阻尼器、金属-黏弹复合阻尼器等;介绍了这些复合阻尼器的构造、耗能方式以及相关研究进展。对复合型阻尼器现阶段的研究进展进行了总结,并提出了一些在复合阻尼器的研究上仍待解决的问题。

State of the art of composite damper

Earthquakes happen frequently,dampers are widely used recently because of their excellent damping effect.Scholars in the world have done a lot of research on dampers of single energy dissipation mechanic.However,the research on composite damper is being started late.There are few kinds of composite dampers,the research systematicness of which is poor,their practical application is rare.Compared with a single-mechanism damper,the composite damper is composed of two types of dampers or a variety of energy-consuming materials,which can achieve the goals like phased energy dissipation,self-centering or two-direction energy dissipation.Composite dampers are classified into SMA(Shape Memory Alloys)-friction dampers,metal-friction dampers,metal-viscoelastic dampers and so on.The structure,energy dissipation mode and related research progress of composite dampers are introduced.The present research progresses of composite dampers are summarized and some problems to be solved in the research are put forward in this paper.