On the Inelastic Design of Steel I Girder Bridges

by Karl E. Barth,
Jennifer Righman,
Donald W. White,

Document Type: Proceeding Paper

Part of: Structures Congress 2005: Metropolis and Beyond


This paper documents the development of a relatively easy to use set of effective plastic moment expressions and compares the performance of these equations with a series of experimental tests. The paper then details simplified inelastic design procedures that may be used for the analysis of continuous span I girders with compact webs, compact, noncompact, or slender webs, and with Lb ≤ Lpd. Lastly a design example is presented and a comparison is made between a mechanism based effective plastic moment approach and a rigorous inelastic solution based on the use of actual M-θp for a girder cross-section.

Subject Headings: Bridge design | Steel bridges | Girder bridges | Inelasticity | Plastics | Girders | Webs (structure) | Moment (mechanics)

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