铅芯橡胶支座竖向刚度试验研究  

Experimental study on vertical stiffness of lead-centered rubber bearings

作　　者：王建强[1] 赵云[1] 刘耀东[1] 赵卓[2] 赵军[1] 

机构地区：[1]郑州大学土木工程学院,河南郑州450001 [2]宁波工程学院建筑工程学院,浙江宁波315211

出　　处：《铁道建筑》2015年第11期33-36,共4页Railway Engineering

基　　金：国家自然科学基金河南省联合基金项目(U1204502);河南省重点科技攻关项目(102102210062);河南省高校科技创新团队(15IRTSTHN026)

摘　　要：对铅芯橡胶支座的竖向刚度进行了试验研究,分析了支座竖向压应力和剪切应变对支座竖向刚度的影响。结果表明:在纯压状态下,支座的竖向压缩变形和竖向刚度均随着竖向压应力的增大近似呈线性增大。在偏压状态下,随着支座剪切应变的增大,支座的竖向压缩位移增大,并且竖向压应力越大,支座竖向压缩位移的增大幅度越大;但支座的竖向刚度随着支座剪切应变的增大近似呈线性减小,并且竖向压应力越大,支座竖向刚度减小的幅度越大。Vertical stiffness test of the lead-centered rubber bearings was carried out,and the influence of the vertical compression stress and shear strain on the vertical stiffness of the bearings was studied.The results show that the vertical compressive deformation and the vertical stiffness of the bearing increase linearly with increasing vertical compression stress when the bearing is under compression.Under compression with eccentricity,the vertical compressive deformation of the bearing increases with increasing shear strain,and it increases more significantly with increasing vertical pressure-stress.The vertical stiffness of the bearing decreases linearly with increasing shear strain,and it decreases more significantly with increasing vertical compression stress.

关 键 词：铅芯橡胶支座 竖向刚度 竖向压应力 剪切应变 试验研究 

分 类 号：TU375.4[建筑科学—结构工程]