【摘要】 为了建立平扭耦联非规则隔震体系的隔震层设计理论和方法,本文通过振动台模拟试验来研究该体系的动力特性和反应。试验中,采用1个3层两跨钢框架,通过调整上部结构负重块位置及下部隔震垫位置,进行不同偏心工况下的平扭耦联隔震体系地震模拟振动台试验。试验结果表明:用本文模型组装方法,实现结构模型的平扭耦联,简单、适用、有效;采取基础隔震可显著降低上部结构扭转反应;调整隔震层刚心使其与上部质心位置接近可进一步降低偏心隔震结构扭转反应。更多还原

【Abstract】 In order to establish the isolation layer design theory and methods of lateral-torsional coupling with the irregular isolation system,the system dynamic characteristics and response are analyzed by using the simulation of shaking table tests.In the experiment,using a 3-storey,2-span steel frame and by changing the location of upper load and the isolation bearings,a series of shaking table tests of the lateral-torsional coupling isolated system under different eccentric conditions are carried out.The experiment shows that: based on the test process and results,it is easy,applicable and effective to fulfil the lateral-torsional coupling of the model by using the assembly method given in this paper;the torsinal response of the eccentric structure can be lowered significantly using isolation bearings;the torsinal response of the eccentric structure can be lowered further by making the centre of stiffness of the isolation layer close to the mass centre of the upper structure.更多还原