三维隔震抗倾覆结构振动台试验  

SHAKING TABLE TEST FOR THE STRUCTURE WITH THREE-DIMENSIONAL BASE ISOLATION AND OVERTURN RESISTANCE DEVICES

作　　者：颜学渊[1,2] 张永山[3] 王焕定[1] 魏陆顺[3] 

机构地区：[1]福州大学土木工程学院,福州350108 [2]哈尔滨工业大学土木工程学院,哈尔滨150090 [3]广州大学工程抗震研究中心,广州510405

出　　处：《工程力学》2010年第5期91-96,共6页Engineering Mechanics

基　　金：国家自然科学基金项目(50508012);广东省科技计划项目(20055190030);广州市高校科技计划项目(08C05);教育部工程抗震减震与结构安全重点实验室开放基金项目(200905)

摘　　要：应用一种具有自主知识产权的被动控制装置——碟形弹簧三维隔震抗倾覆支座(3D-BIORD-DS)对一高层钢框架模型结构进行了隔离三向地震动激励的振动台试验。介绍了装置的设计原理和力学性能试验,试验结果表明:装置内置钢丝绳交错与否对装置的水平性能有较大影响;装置具有足够的竖向承载力。进行了模型结构振动台试验,考查了4条地震动作用下的结构反应。对试验结果的分析表明:不管是短周期地震动还是长周期地震动,装置都能够较好地减小结构的三向地震响应;但是结构的倾角反应较大,表明支座的竖向刚度应当进行更加合理的设计,以满足可使用性要求。Shaking table tests of a high-rise frame structure model under three dimensional ground motion excitations were carried out. There were passive control devices of independent intellectual property rights under the base of the model and the devices were named three-dimensional base isolation and an overturn resistance device with a disk spring （3D-BIORD-DS）. The design principles and mechanical property tests of the devices were introduced. The tests results show that whether the inner wire rope stagger has influence on the horizontal properties of the device,the device has enough vertical bearing capacity. Then,shaking table tests of the model were performed for the study of structural responses under four different ground motions. The analyses for the test results indicate that the devices can reduce the three dimensional seismic responses well,whether for the short-period ground motions or the long-period ground motions. But the tilt angle reactions of the structure are relatively large,which show that the vertical stiffness of the device should be designed more reasonably for the workability requirement.

关 键 词：防灾减灾 高层结构 三维隔震抗倾覆 力学性能试验 振动台试验 

分 类 号：TU352.1[建筑科学—结构工程] TU317.1