Seismic response control of a benchmark cable-stayed bridge by variable dampers

Cable-stayed bridges exhibit unique responses under a strong ground motion because of the complexity in structural behaviors, especially the damping mechanism. Recently, the benchmark problem of a cable-stayed bridge was developed to clarify the effectiveness of various seismic control strategies. Due to the new development of magnetorheological dampers, the application of variable dampers in bridges becomes possible. In this study, the effectiveness of variable dampers with various damping force schemes in controlling the benchmark cable-stayed bridge is investigated.