Earthquake ground motion spatial variation effects on seismic response control of Cable-Stayed Bridges

摘要: The spatial variability of the input ground motion at supporting foundations plays a key role in structural response flexible long span bridges such as cable-stayed and suspension bridges, therefore variation effects should be included analysis design effective vibration control systems for horizontally extended structures. long-span represents challenging unique problem, with many complexities modelling, implementation, since system designed not only to mitigate dynamic component but also counteract pseudo-static response. feasibility efficiency seismic cablestayed are investigated. seismically controlled is considered based on decomposition total into pseudostatic component. assumption uniform earthquake along entire bridge could unrealistic differences among different supports due travelling waves may result quantitative qualitative compared those produced by all supports. Comparison non-uniform wave propagation velocities that demonstrates importance accounting excitations.