Study On the Seismic Response of the Extradosed Cable-Stayed Bridges with Continuous System for Different Seismic-Isolated Design Scheme

摘要

In order to study the seismic response characteristics of extradosed cable-stayed bridges with continuous system for different seismic isolation design scheme. A parametric study, based on the nonlinear dynamic time history analysis method, is conducted to investigate the contribution of the bearings on the seismic response of five typologies of the extradosed cable-stayed bridges. The analysis results showed that the other isolation design scheme can effectively control the relative displacement of the beam end, which compared with the JQZ scheme; The FZQZ scheme can effectively coordinate the force between the piers and play the seismic potential of the pier, which can be applied to the different characteristics of the ground motions. For the system, is a more ideal antiseismic design.