Seismic fragility assessment of geotechnical seismic isolation (GSI) for bridge configuration

Abstract The seismic vulnerability of bridges may be reduced by the application Geotechnical Seismic Isolation (GSI) below foundations columns and abutments. However, role GSI on response has been limitedly examined in literature. Therefore, this research conducted to study effect applying address aforementioned gap knowledge. Advanced nonlinear dynamic three-dimensional finite element analyses have using OpenSees influence GSI. cases traditional isolated subjected earthquakes considered assess effects. results showed that reduces column while its seems less significant for In addition, fragility curves developed compared provide insights with a probabilistic-based approach. paper useful benchmark design considerations regarding use bridges.