隔震层刚度对摩擦滑移结构地震反应的影响  

THE INFLUENCE OF ISOLATION LAYER STIFFNESS ON THE SEISMIC RESPONSE OF THE FRICTIONAL SLIDING STRUCTURE

作　　者：何志坚[1] 王社良[1] 

机构地区：[1]西安建筑科技大学土木工程学院,西安710055

出　　处：《工业建筑》2013年第11期59-63,48,共6页Industrial Construction

基　　金：陕西省自然科学基础研究基金项目(2007E205);陕西省重点实验室项目(08JZ35)

摘　　要：为研究隔震层刚度对基础隔震结构隔震情况的影响,以寻求最优隔震层刚度。在一多层简单钢筋混凝土框架结构的基底设置摩擦系数为0.05的摩擦滑移隔震钢板,采用SAP2000建模和分析。比较了首层柱子底部做成刚性底板与否的隔震情况,也比较了在不同隔震层刚度下结构的隔震情况。研究结果表明:设有刚性底板的隔震结构能有效控制基底最大滑移量。所选结构在隔震层刚度为2 000 kN/m时隔震效果最佳,降低了结构在地震中的峰值反应如自振周期、层间位移、层间剪力和加速度反应,某些减震率甚至超过90%。To study the influence of isolation layer stiffness on the base isolation structure, and find the optimal stiffness of the isolation layer, friction sliding isolation steel plate of 0. 05 friction coefficient was set behind a muhilayer simple reinforced concrete frame structure basement, and SAP2000 was used for modeling and analysis. It was compare the isolation situation of first layer pillars bottom made of rigid baseplate or not, and also compare the isolation situation of the structure with different isolation layer stiffness. The results show that the isolation structure having a rigid baseplate can effectively control the basement maximum slippage. The selected structure has the best isolation effect when the isolation layer stiffness is 2 000 kN/m, thus reducing the peak response of the structure in the earthquake, such as vibration period, interlayer displacement, interlayer shear and acceleration response, some damping rate even exceeds 90%.

关 键 词：基础隔震 隔震效果 建模分析 隔震层刚度 摩擦滑移 

分 类 号：TU352.12[建筑科学—结构工程]