Inelastic Behavior of Noncompact Steel Bridge Girders

by Donald W. White, Purdue Univ, W. Lafayette, United States,



Document Type: Proceeding Paper

Part of: Structural Engineering in Natural Hazards Mitigation

Abstract: This paper highlights the results from one of several finite element studies of the inelastic moment-rotation behavior of continuous-span non-compact bridge girders at interior-pier locations. Specifically, a negative moment specimen is considered that has been tested experimentally in prior AISI supported research. The specimen was designed with ultra-compact flanges, and with closely spaced transverse stiffeners in the peak negative moment region. The web slenderness is slightly greater than the AASHTO compactness criteria. The analysis results for this test are compared to the experimental responses, and aspects of the behavior elucidated by the finite element predictions are discussed.

Subject Headings: Girder bridges | Steel bridges | Finite element method | Steel beams | Moment (mechanics) | Inelasticity | Stiffening

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