ABSTRACT
Seismic isolation is an essential technology for improving the seismic performance of bridges. It is necessary to avoid the rupture of isolators to maintain the functionality of isolated bridges after seismic events. In this study, the effects of long-term aging deterioration of seismic isolators on the seismic behavior and seismic reliability of bridges retrofitted by seismic isolation were investigated based on incremental dynamic analysis. As a result, the possibility of rupture of seismic isolators can be significantly reduced by setting an adequate capacity hierarchy between the seismic isolator and the column, regardless of the aging deterioration of seismic isolators.
