基础滑移隔震框架结构试推与复位方案的分析研究  

Pushing and resetting scheme for a base sliding isolation frame structure

作　　者：熊仲明[1] 张超[1] 高俊江 

机构地区：[1]西安建筑科技大学土木工程学院,西安710055 [2]中联西北工程设计研究院,西安710082

出　　处：《振动与冲击》2014年第12期181-187,共7页Journal of Vibration and Shock

基　　金：国家自然科学基金项目(51278395);陕西省教育厅专项基金(12JK0895);西安市科技攻关课题(GG04051)

摘　　要：试推与复位技术是检验基础滑移隔震结构设计与施工可靠性的重要手段。运用SAP2000有限元分析软件对带有限位装置的基础滑移隔震框架结构进行了有限元分析,通过模拟局部荷载作用位置,研究了在不同工况作用下隔震层顶部基础梁的受力及变形特点,得到了上部结构附加内力和变形最小的试推方案。同时,进行了在不同工况作用及整体荷载作用下结构动力响应分析,得到了局部荷载作用与整体荷载作用下结构的动力响应的对比关系。实际工程算例表明,合理地分散布置试推点的多条轴线多点加载方案基本可以满足滑移隔震结构试推与复位的要求,可作为一种检测滑移隔震结构设计与施工效果的有效方法。The technology of pushing and resetting is an important means of examining of design and construction for a base sliding isolation structure.A base sliding isolation structure with displacement-restricted devices was analyzed with the finite element analysis program SAP2000,positions of local loads were simulated,the features of stress and deformation of foundation beams at the top of the isolation layer were studied in different cases,a pushing scheme with the minimum additional internal force and the minimum deformation in the upper structure was obtained.Meanwhile,the dynamic responses of the structure were analyzed in different cases and under the overall loads,the contrast relationship of the dynamic responses of the structure under local loads and the overall loads was obtained.The practical engineering examples showed that a multi-point loading scheme with loading points reasonably dispersed along multi-axis can basically meet pushing and resetting requirements of a base sliding isolation structure,and it can be an effective method for detecting the effect of design and construction on a base sliding isolation structure.

关 键 词：基础滑移隔震 有限元分析 试推与复位 

分 类 号：TU352.1[建筑科学—结构工程]