作　　者： ; ; ; ;

机构地区： 上海大学土木工程系

出　　处： 《结构工程师》 2013年第5期155-160,共6页

摘　　要： 提出一种由聚四氟乙烯和天然橡胶粘结组成的锥形非固结支座,对支座进行压缩性能试验研究,并测试了支座的原点竖向刚度和标准竖向刚度。设计了5层钢框架模型结构并进行锥形非固结支座减震结构在有无聚氨酯材料的正弦波加振振动台试验研究。研究结果表明:在单纯压缩荷载作用下,锥形支座的变形滞后于应力形成滞回环,支座本身具有消耗能量的能力;锥形非固结减震支座无粘弹性材料时结构各层放大系数平均在1.8倍左右,而基于聚氨酯材料锥形非固结支座的减震结构上部结构各层放大系数平均在1.3倍左右,相较传统结构的地震响应具有良好的减震效果。 It is introduced a unbounded conical bearing that is composed of PTFE and natural rubber.Experimental study on compressive property of the unbounded conical bearing is conducted.Origin vertical stiffness and standard vertical stiffness of the unbounded conical bearing are calculated.The sinusoidal shaking table tests study on a 5-story steel frame isolated structure with unbounded conical bearing,in the case of containing polyurethane damping material and not,are carried out.The results show that the unbounded conical bearing formed stress-strain hysteresis loop under compressive loading;the bearing have high dissipated energy;the amplification coefficient of the unbounded conical bearing without polyurethane is around 1.8,the amplification coefficient of the unbounded conical bearing with polyurethane is around 1.3.Compared with traditional structures in seismic resistance,the new unbounded conical bearing can be more effective.

关 键 词： 非固结支座 压缩性能 振动台试验

领　　域： [建筑科学]