ABSTRACT
ABSTRACT: Over the last few decades, cable-stayed bridges have attracted great interest because of their aesthetics, structural efficiency, and economy of construction. However, these structures have a vulnerability to dynamic loads such as earthquakes and strong winds as a consequence of their structural flexibility and low damping characteristics. Among various strategies for the dynamic response mitigation of cable-stayed bridges, semi-active dampers have lately become a subject of interest due to its favorable features, i.e., inherent stability and minimal power requirements. Furthermore, the recent rapid progress of the related technology on magnetorheological (MR) damper system shows the great deal of promise for introduction of semi-active dampers to real structures. Thus, it would be a worthwhile subject to investigate the feasibility and cost-effectiveness of the MR damper system for cable-stayed bridges under earthquake excitation.
