【摘要】 研究了实验子结构、计算子结构均为多自由度(MDOF)的子结构拟动力试验方法,并采用该方法对一种新型复杂高层结构——框支配筋砌体剪力墙结构进行了抗震试验研究。分析结果表明,当全结构的实验子结构采用多自由度后,不仅使实验能够得到全结构的地震反应,而且可以较好地反映实验子结构在真实地震作用下的力和位移的分布方式,并且可以得到不同性质楼层(如转换层结构的上部和下部楼层)在地震作用下的层位移-层剪力滞回耗能特性,而后两点是实验子结构采用单自由度的子结构拟动力试验做不到的。试验证明,采用实验子结构、计算子结构均为多自由度的子结构拟动力试验方法进行复杂高层结构的抗震试验能比目前常用的实验子结构采用单自由度的子结构拟动力试验获得更多有效而真实的数据。更多还原

【Abstract】 A substructure pseudo-dynamic testing method,in which both the PSD tested part and the numerically operated part are of MDOF,is studied.Seismic testing has been carried out for a new structure-a frame-supported reinforced masonry shear wall,to illustrate that the substructure pseudo-dynamic testing method can not only obtain the dynamic performance of the structure,but also characterize the structural displacement and force distributions under earthquake.In addition,the testing method can also obtain the drift-shear relationships of different stories.Therefore,the substructure pseudo-dynamic testing method is shown to be an effective tool for investigating the seismic behavior of complex tall buildings.更多还原