摘要
隔震橡胶支座在地震中处于竖向受压、水平双向受剪的状态。为了研究高阻尼橡胶支座在三向受力状态下的力学性能,进行了高阻尼橡胶支座的压缩-水平单向剪切和压缩-水平双向剪切力学性能试验,分析了水平双向剪切作用对高阻尼橡胶支座力学性能的影响。研究表明,高阻尼橡胶支座在双向剪切作用下的滞回曲线、耗能、屈服力、屈服后刚度、水平等效刚度和等效阻尼比与单向剪切作用下的力学性能有一定的差异,但二者整体相差不大;压缩-双向剪切作用下高阻尼橡胶支座力学性能的计算可以采用支座在压缩-单向剪切作用下力学性能的计算公式。
The rubber bearing will be in the state of vertical compression and horizontal two-way shear in earthquake.In order to study the mechanical properties of the high damping rubber bearing(HDR)under three-dimensional loading,the compression-unilateral shear and compression-bilateral shear tests of HDR are carried out.The influence of bilateral shear loading on the mechanical properties of HDR is studied.The results show that the hysteretic loops,energy dissipation,yield force,post yield stiffness,horizontal equivalent stiffness and equivalent damping ratio of HDR under bilateral shear loading are different from those under unilateral shear loading,but there is little difference between them as a whole.The mechanical properties of HDR under bilateral shear loading can be effectively simulated by the mechanical properties formula of HDR under unilateral shear loading.
作者
丁永刚
李政
王建强
Ding Yong-gang;Li Zheng;Wang Jian-qiang(School of Civil Engineering,Henan University of Technology,Zhengzhou 450001,China;School of Civil Engineering,Henan Vocational College of Applied Technology,Zhengzhou 450042,China;School of Civil Engineering,Zhengzhou University,Zhengzhou 450001,China)
出处
《工程抗震与加固改造》
北大核心
2021年第4期128-132,159,共6页
Earthquake Resistant Engineering and Retrofitting
基金
河南省科技攻关计划项目(152102210269)。
关键词
高阻尼橡胶支座
压缩-剪切试验
双向剪切作用
力学性能
high damping rubber bearing
compressive-shear test
bilateral shear loading
mechanical property
