框架-摇摆墙结构抗震性能试验研究  

Experimental study on seismic behavior of frame-rocking wall structure

作　　者：张富文[1,2] 李向民[1,2] 许清风[1,2] 贡春成[1,2] 陈溪[1,2] 刘琼[1,2] 

机构地区：[1]上海市工程结构安全重点实验室,上海200032 [2]上海市建筑科学研究院(集团)有限公司,上海200032

出　　处：《建筑结构学报》2015年第8期73-81,共9页Journal of Building Structures

基　　金：国家"十二五"科技支撑计划(2012BAJ06B02)

摘　　要：为研究框架-摇摆墙结构的实现形式与抗震性能,进行了摇摆墙体与框架及摇摆墙与基础的可更换节点的设计,在此基础上开展了框架-摇摆墙结构的拟静力试验。试验共设计一榀钢筋混凝土框架模型和两榀框架-摇摆墙模型,其中摇摆墙体与框架分别采用软钢的工字形和圆柱形两种延性连接件形式,摇摆墙与基础则分别采用橡胶垫的非抗剪和抗剪连接。拟静力试验结果表明:设计的框架-摇摆墙能够将失效部位设定在预期构件上,有助于实现强震后的可恢复性;两种框架-摇摆墙模型的受剪承载力较对比框架分别提高了21.8%和29.5%;框架-摇摆墙较框架结构有更优异的刚度与承载力退化性能和更好的耗能能力;框架-摇摆墙可有效改善框架结构的变形模式,使得各层的层间位移趋向均匀。框架与摇摆墙的延性连接节点是决定框架-摇摆墙抗震性能的关键,应在保证连接件不发生断裂破坏的前提下充分发挥其在强震下的耗能能力。To investigate the realization and seismic performance of frame-rocking wall structure,replaceable joints of rocking wall-frame and rocking wall-foundation were developed,and experiments were also conducted on frame-rocking wall structures. One reinforced concrete frame and two frame-rocking wall structures were tested,while I-shaped and cylindrical mild steel rocking wall-frame connections,and rubber-based rocking wall-foundation connections with and without shearing connector were employed in these two frame-rocking wall structures repectively. Quasi-static test results show that it can make the failure occur at the predicted members with reasonable design,which enables the high restorability of structures after strong earthquakes. Compared with the reference concrete frame specimen,shear capacity of two frame-rocking wall models are enhenced by 21. 8% and 29. 5% respectively,and the degradation performance of stiffness,bearing capacity and energy dissipation capacity are also improved. The deformation mode of frame structures is also improved with the application of rocking wall,and contributes to a more even distribution of story drift. Test results also indicate that the ductility connection between the frame and rocking wall is critical to the seismic performance of frame-rocking wall system, the energy dissipation capacity of this system under strong earthquakes should be fully developed in the condition that the rupture of connections is prevented.

关 键 词：框架-摇摆墙 可更换节点 延性连接件 拟静力试验 耗能能力 变形模式 

分 类 号：TU352.11[建筑科学—结构工程]