Steel Box-Girder Bridges—Ultimate Strength Considerations

Subcommittee on Ultimate Strength of Box Girders of the ASCE–AASHTO Task Committee on Flexural Members of the Committee on Metals of the Structural Division, ASCE

Serial Information: Journal of the Structural Division, 1974, Vol. 100, Issue 12, Pg. 2433-2448

Document Type: Journal Paper


A summary of recent box-girder failures, a discussion of the design problems associated with box-girder bridges, and a review of the basis for current American design specifications are presented. The applicability of existing information to the formulation of an ultimate strength approach to box-girder design is considered. Design problems requiring additional study as well as research needs are discussed. It is concluded that considerable analytical and experimental work dealing with stiffened compression flange behavior, web behavior and their effects on the overall behaviors of box girders is required prior to the formulation of an ultimate strength approach to design.

Subject Headings: Bridge design | Steel bridges | Compressive strength | Box girders | Girder bridges | Structural strength | Strength of materials | Ultimate strength

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