形状记忆合金橡胶支座剪切性能及自恢复特性研究  

RESEARCH ON SHEAR PROPERTIES AND SELF-RECOVERY CHARACTERISTICS OF SHAPE MEMORY ALLOY PSEUDO-RUBBER BEARINGS

作　　者：袁泽森 刘振亮 李素超[1,2] 王志远[1] YUAN Zesen;LIU Zhenliang;LI Suchao;WANG Zhiyuan(Key Lab of Structures Dynamic Behavior and Control of the Ministry of Education,School of Civil Engineering,Harbin Institute of Technology,Harbin 150090,China;Department of Civil Engineering,Harbin Institute of Technology(Weihai),Weihai 264209,China)

机构地区：[1]哈尔滨工业大学结构工程灾变与控制教育部重点实验室,哈尔滨150090 [2]哈尔滨工业大学(威海)土木工程系,山东威海264209

出　　处：《工业建筑》2021年第11期1-6,18,共7页Industrial Construction

基　　金：国家重点研发计划项目(2018YFC0809400);山东省自然科学基金面上项目(ZR2020ME247)。

摘　　要：对两类工艺(Ⅰ、Ⅱ类)制备的自复位形状记忆合金橡胶支座进行循环剪切试验,系统研究其在不同加载频率、加载幅值、加工工艺及预加压缩荷载工况下的剪切性能,并对产生残余应变的形状记忆合金橡胶支座进行升温自恢复及力学性能试验。研究结果表明:两类形状记忆合金橡胶隔震支座的剪切性能稳定,等效阻尼比随剪切幅值的增大而提高;通过预加压缩荷载可以大幅提高形状记忆合金橡胶隔震支座的剪切刚度和耗能能力。两类试件都能通过升温消除残余应变,其中Ⅱ类试件与升温前的力学性能稳定,具备很好的重复性。Based on the shear test of two types(Ⅰ and Ⅱ) of shape memory alloy pseudo-rubber(SMAPR) bearings, the effects of loading frequency, loading amplitude, processing technology and pre-compression stress on its shear properties of its non-forming direction were studied. In addition, the self-recovery through temperature-rising and subsequent mechanical properties were investigated for the SMAPR specimen with residual deformation. The results showed that the shear properties of type Ⅰ and Ⅱ SMAPR bearings were stable, and the equivalent damping ratio increased with the increment of shear amplitudes. The shear stiffness and energy dissipation capacity of SMAPR isolators could be greatly improved by applying pre-compression loads. The residual strain of the two types of specimens could both be eliminated through temperature-rising, and the mechanical properties of type Ⅰ specimens were consistent with those before temperature-rising, which had good repeatability.

关 键 词：形状记忆合金橡胶隔震支座 剪切性能 升温自恢复:预加压缩荷载 

分 类 号：TU352.12[建筑科学—结构工程]