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Recommended Procedures for Simplified Inelastic Design of Steel I-Girder Bridges |
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| Authors: | Karl E. Barth Bryan A. Hartnagel Donald W. White Michael G. Barker |
| Affiliation: | 1Assistant Professor, Civil and Environmental Engineering Dept., West Virginia Univ., Morgantown, WV 26506. 2Structural Engineer, MoDOT., Jefferson City, MO, 65102. 3Associate Professor, School of Civil and Environmental Engineering, Georgia Institute of Technology, Atlanta, GA 30332-0355. 4Professor, Dept. of Civil and Archival Engineering, Univ. of Wyoming, Laramie, WY 82071. |
| Abstract: | This paper presents summary recommendations pertaining to new AASHTO procedures for simplified inelastic design of steel I-girder bridges. First, key developments are summarized that lead to the proposed inelastic design approach. The paper then outlines a set of equations that provide an improved characterization of the inelastic moment-rotation response for a wide range of I-beams and plate girders. Effective plastic moment predictions based on these equations are combined with the recently proposed design method, resulting in greater accuracy and simplicity of the proposed approach. The ease of use of the resulting procedure is illustrated by a design example. |
| Keywords: | Inelastic action Bridges, steel Load and resistance factor design Steel beams Bridges, girder I beams Bridge design |