Seismic Reduction and Control Analysis of Steel Frame-concrete Core Wall Structure with Viscous Dampers

To study the vibration control of the steel frame-concrete core wall structural system using nonlinear fluid viscous dampers,a typical high-rise building with and without dampers was modeled and analyzed,using SAP2000program,in which,besides the case without dampers,5layouts of dampers used in the structure were considered,including different ways of dampers' installation,i.e.,installation of dampers between the frame and core wall or only in the outer frame,as well as the floor levels of their installation and their numbers,and then,time-history analyses were performed under 3inputs of earthquake records,respectively,and their seismic responses were compared each other.The results show that the use of nonlinear fluid viscous dampers for the steel frame-concrete core wall structural system results in obviously reduced seismic responses of the structure,comparing with the case without dampers;the dampers installed between the frame and core wall have the better effect of seismic vibration control than that installed only in outer frame;the reasonable arrangement of dampers is important when using them effectively for the purpose of seismic vibration control of such structural system.