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Showing 1 to 4 of 4 for “"quasi-isolation"”.
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Nonlinear seismic analysis of quasi-isolation systems for earthquake protection of bridges
Quasi-isolation is a modern bridge seismic design philosophy where nonlinearity is permitted to occur in specific bearing components such that forces transferred into the substructure are reduced and isolation is achieved by sliding of the bearings. The system is a pragmatic approach for providing …
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Assessment of modeling sensitivity for nonlinear seismic analysis of highway bridges in Illinois
… of the piers or by specially designed isolation devices placed between the superstructure and substructure. The Illinois Department of Transportation (IDOT) has focused on this second isolation approach, however considering only conventional bearings, in order to formulate a …
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Seismic performance assessment of quasi-isolated highway bridges with seat-type abutments
"Seismic isolation is one of the most popular strategies to protect civil engineering structures against earthquake hazards. For highway bridges, isolation physically decouples a bridge superstructure from its substructures resting on a shaking ground, leading to a significant reduction in the …
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Quasi-isolated highway bridges: influence of bearing anchorage strength on seismic performance
… to achieve a structural response similar to isolation. Earlier research at the University of Illinois comprised full-scale laboratory tests of bearings, and computational models capturing full-bridge seismic response. This prior research validated the quasi-isolated ERS, demonstrated that …