【摘要】 为了研究竖向地震作用对LRB隔震结构的影响,并改善其隔震效果,建立了耦合地震作用下LRB隔震结构的地震反应分析模型并推导出运动微分方程.以7层LRB隔震结构为例进行地震反应分析,研究结果表明当考虑竖向地震作用时,LRB隔震结构仍具有良好的隔震效果,但地震反应有不同程度的增加,且其增量随着竖向地震作用的增加而增加.建立LRB隔震装置的参数优化设计模型,采用IHGA程序对结构的进行优化设计.结果表明,LRB隔震结构在各种工况下的各项地震反应均得到更好地控制.更多还原

【Abstract】 In order to study the influence of coupling earthquake in vertical direction on base-isolated structure with lead rubber bearing(LRB),a dynamic analysis model for the base-isolated structure with LRB under coupling earthquake was set up,and the kinetic differential function was presented accordingly.Taking a 7-story base-isolated structure with LRB for example,it is showed that the base-isolated structure with LRB has a good controlled effect when the action of earthquake in vertical direction is considered.However,the seismic responses of base-isolated structure with LRB increase in different degrees under the incremental action of earthquake in vertical direction.An optimal model for the base-isolated structure with LRB was set up with IHGA.It is indicated that various earthquake responses of base-isolated structure with LRB under various loading conditions can be better controlled.更多还原