Extra-large span cable-stayed bridge;  Elastic connection device;  viscous dampers;  Energy consumption

Elastic connection devices and dampers are set up at the tower and beam connections of Sutong Bridge. The elastic stiffness and damper parameters of the appropriate elastic connection device were selected, the hysteresis energy dissipation characteristics of the viscous damper were simulated by Maxwell damping model, and the shock absorption effect of the elastic connection device and the viscous damper was compared by the method of structural nonlinear seismic analysis, and the analysis showed that the elastic connection device and damper could effectively reduce the seismic displacement of the beam end, but the effect of the damper was more ideal.