Self-resetting viscous composite damper

Abstract

The utility model discloses a self-resetting viscous composite damper. The viscous damper comprises a viscous damper body, a guide rod, a U-shaped shape memory alloy element and a connecting frame, acylinder body of the viscous damper body is fixedly connected with the connecting frame, one end of the guide rod penetrates through the connecting frame to be connected with a piston rod of the viscous damper body, and the branch end of the U-shaped shape memory alloy element is connected with the guide rod and the connecting frame. The composite damper is composed of the shape memory alloy and the viscous damper. The characteristics of the self-resetting damper can be exerted at the early stage of an earthquake; when an earthquake is strong, the characteristics of the viscous damper are exerted; the self-resetting damper has the advantages that the self-resetting damper is simple in structure, sufficient energy consumption is provided, the characteristics of the self-resetting damper areplayed before an earthquake is ended, the post-earthquake structure is almost free of residual deformation, the anti-seismic property and the post-earthquake function restorability of the structure can be integrally improved, and the self-resetting damper has wide application prospects in the fields of building structures and bridge engineering. 本实用新型公开了一种自复位黏滞复合阻尼器，包括：黏滞阻尼器、导杆、U型形状记忆合金元件和连接架，黏滞阻尼器的缸体与连接架固定连接，导杆的一端穿过连接架与黏滞阻尼器的活塞杆连接，U型形状记忆合金元件的分支端分别与导杆和连接架连接。通过利用形状记忆合金和黏滞阻尼器组成复合阻尼器，可在地震发生初期发挥自复位阻尼器的特性，在地震强烈时发挥黏性阻尼器的特性，提供足够的耗能，而在地震结束前又发挥自复位阻尼器的特性，使震后的结构几乎没有残余变形，能够整体提升结构的抗震性能与震后的功能可恢复能力，在建筑结构和桥梁工程领域具有较为广阔的应用前景。