Redundancy Evaluation of Steel Girder Bridges

by Dan M. Frangopol, Univ of Colorado, United States,
Rachid Nakib, Univ of Colorado, United States,

Document Type: Proceeding Paper

Part of: Structural Safety and Reliability


The focus of this paper is on the use of redundancy measures in the evaluation of bridge systems. The emphasis is on the definition of system redundancy measures suitable for use by bridge evaluators and designers. The deterministic and probabilistic redundancy factors of an existing steel girder bridge, Colorado State Bridge E-15-AF, under corrosion damage scenarios are calculated using nonlinear finite element analysis. Effects of different damage states on both bridge redundancy and bridge reliability are estimated.

Subject Headings: Steel bridges | Girder bridges | Bridge tests | Highway bridges | Finite element method | Structural reliability | Steel structures

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