DUCTILE SEISMIC RETROFIT SOLUTION FOR DECK-TRUSSES
Most deck-truss bridges have been designed and constructed without consideration for seismic resistance; as a result, their members are not sized to provide the needed ductile response (often slender members with weak connections), and they are frequently supported by non-ductile substructure. Strengthening strategies for these bridges can be very costly. A new ductile seismic retrofit solution proposed here consists of converting the deck slab into a composite slab, and replacing the end sway-bracing panels and the lower-lateral braced panels adjacent to the piers by special ductile diaphragms. The ductile fuses protect the remaining superstructure and substructure, even during a much larger than anticipated earthquake.
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Corporate Authors:
California Department of Transportation
1120 N Street
Sacramento, CA United States 95814 -
Authors:
- Bruneau, M
- Sarraf, M
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Conference:
- Second National Seismic Conference on Bridges and Highways
- Location: Sacramento, California
- Date: 1997-7-8 to 1997-7-11
- Publication Date: 1997
Language
- English
Media Info
- Features: Figures; References; Tables;
- Pagination: p. 237-252
Subject/Index Terms
- TRT Terms: Bridge decks; Bridge substructures; Bridge superstructures; Composite construction; Ductility; Panels; Protection; Retrofitting; Structural diaphragms; Truss bridges
- Subject Areas: Bridges and other structures; Design; Highways; Security and Emergencies; I24: Design of Bridges and Retaining Walls;
Filing Info
- Accession Number: 00760101
- Record Type: Publication
- Files: TRIS, STATEDOT
- Created Date: Feb 2 1999 12:00AM