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- W636765556 abstract "Open steel grid decks are commonly used for rehabilitating older bridges because they are lightweight and easy to install. However, many field studies have revealed that these decks are experiencing severe maintenance problems such as fatigue cracking of grid deck components and/or plug welds connecting these components. Since the AASHTO load distribution procedures for these decks are found to be erroneous, simple transverse load distribution formulas within the open steel grid deck and for the deck-stringer system are developed, herein. Problem parameters investigated through this experimental research include: main bar spacing and its direction with traffic flow, load position, composite action, residual stress build-up during manufacturing, stringer spacings, braking/accelerating forces, galvanization, and fatigue effects on local regions, stringers and adjacent panels. Based on the theoretical and experimental research of this study, a few pertinent conclusions and recommendations are: (1) composite action between the grid deck and stringer is found to be negligible; (2) deflections and moments from laboratory tests are within 10% and 20%, respectively, of the proposed design equations; (3) fatigue resistance for welded grid decks is close to the one given for Category E of AASHTO Standard Specification for design and construction of grid decks; and (4) recommendations are made in terms of future research, construction and manufacturing." @default.
- W636765556 created "2016-06-24" @default.
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- W636765556 date "1988-06-30" @default.
- W636765556 modified "2023-09-26" @default.
- W636765556 title "BEHAVIOR AND DESIGN OF OPEN STEEL GRID DECKS FOR HIGHWAY BRIDGES. FINAL REPORT. VOLUME I" @default.
- W636765556 hasPublicationYear "1988" @default.
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