非固结锥形隔震支座振动台试验研究  

Shaking Table Tests Study on Unconsolidated Conical Bearing

作　　者：李貌[1] 刘文光[2] 何文福[2] 孙凤利 

机构地区：[1]广州大学土木工程学院,广东广州510006 [2]上海大学土木工程系,上海200072 [3]珠海市建筑设计院,广东珠海5193000

出　　处：《工程抗震与加固改造》2009年第4期45-50,65,共7页Earthquake Resistant Engineering and Retrofitting

基　　金：国家自然科学基金项目(50878124);广东省科技厅项目(2004B2801001;2006B37201002

摘　　要：对一缩尺1：4的采用非固结锥形隔震支座的钢框架结构模型进行了水平和竖向单向地震波输入下的振动台试验。通过输入不同类型的地震波，分析上部结构和锥形支座的地震反应。试验结果表明，在8度和9度罕遇地震作用下，上部结构的加速度峰值比输入加速度峰值增加10％～50％，和普通抗震结构相比具有明显的减震效果。由支座的滞回曲线可以看出，上下盖板会在地震作用下产生错动位移，同时挤压粘弹性体消耗地震能量。试验结果表明，非固结锥形隔震支座具有良好的减震性能，对低层建筑结构的减震具有明显的推广价值。The shaking table tests are conducted with input of horizontal and vertical earthquake on a two-floor steel frame model with a scale down of 1：4 and unconsolidated conical bearing. Earthquake responses of top structure and conical bearing are analyzed by inputing earthquake wave with different magnitudes and types. Experimental results indicate that the peak acceleration of top structure has a increment by 10% - 50% in the seismic of 8 and 9 intensity,but it has obviously isolated effect compared to normal anti-seismic structure. The hysteresis curves of the bearing show that the covers top and down dissipated earthquake energy by compressing the viscoelastic material when they formed stagger displacement. The results of the test indicate that the unconsolidated conical bearings have good damping effect and the promote value to multilayer building for reducing vibration.

关 键 词：锥形支座 振动台试验 地震反应 

分 类 号：TU352.12[建筑科学—结构工程]