SEISMIC: The Feasibility of Using Buckling-Restrained Braces for Long Span Bridges

Viscous dampers have been used to retrofit long-span bridges in California. While these mechanical devices have demonstrated their effectiveness in reducing seismic response through laboratory testing and numerical simulation, experience from dampers in-service on a long-span bridge has revealed problems (e.g., leaking) that question the ability of these devices to function as intended during a significant seismic event. While buckling-restrained braces (BRB) may be an alternative in the design of a new bridge, it is unclear whether these devices can replace an existing viscous damper in-service without a significant retrofit of the existing bridge. This study should investigate the feasibility of replacing existing viscous dampers currently in-service on California bridges with BRB. More specifically, the researcher should identify and validate potential BRB that can be used to replace existing dampers in-service.


    • English


    • Status: Active
    • Sponsor Organizations:

      California Department of Transportation

      1227 O Street
      Sacramento, CA  USA  95843
    • Project Managers:

      Sikorsky, Charles

    • Performing Organizations:

      Regents of the University of California, San Diego

      San Diego, CA  USA 
    • Principal Investigators:

      Uang, Chia-Ming

    • Start Date: 20091130
    • Actual Completion Date: 20130630
    • Source Data: RiP Project 27732

    Subject/Index Terms

    Filing Info

    • Accession Number: 01466053
    • Record Type: Research project
    • Source Agency: California Department of Transportation
    • Files: RiP, STATEDOT
    • Created Date: Jan 3 2013 3:09PM