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AISI-FHWA Model Bridge Test

by Mark Moore, (M.ASCE), Wiss, Janney, Elstner Associates Inc, Atlanta, United States,



Document Type: Proceeding Paper

Part of: Structures Congress XII

Abstract:

The Model Bridge Study involved a large experimental test program to evaluate the behavior of a 0.4-scale model of a two-span continuous plate-girder bridge with modular precast prestressed deck panels. The bridge was designed according to the Alternate Load Factor Design (ALFD), or Autostress, procedures. The project was jointly sponsored by the Federal Highway Administration (FHWA) and the American Iron and Steel Institute (AISI). Initiated in late 9182, the model bridge project was part of a comprehensive research program conducted by AISI to extend inelastic design procedures to continuous girders with noncompact elements. The American Association of State Highway and Transportation Officials (AASHTO) Guide Specification for ALFD Procedures permitted the use of inelastic design methods only for bridges made of braced compact sections. The principal goals of the research program were to study the behavior of a two-span continuous plate-girder bridge designed according to ALFD procedures but built with noncompact girder elements and a concrete bridge slab made of modular precast prestressed panels.

Subject Headings: Girder bridges | Bridge tests | Bridge decks | Bridge design | Span bridges | Load and resistance factor design | Structural design

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