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Accession Number PB2014-106275
Title Axle Equivalent Transverse Loading on Segmental Bridge Decks, Summary Report.
Publication Date Apr 2014
Media Count 1p
Personal Author M. Roddenberry S. Jung
Abstract Designers and load raters of box girders must analyze strength from one end to the other, along the line of travel (longitudinal dimension), and from side to side (transverse dimension). The latter is especially important because the bridge deck is cantilevered beyond the box and is subject to bending effects due to vehicle loads. Typically, designers determine bending effects using a Homberg chart, which match selected box girder design parameters. Available Homberg charts may not encompass the wide variety of truck weights and geometries that cross Florida bridges, yet each of these vehicles must be permitted by FDOT to cross specific bridges, which demands confident understanding of stresses that the vehicle will induce in the bridge structure. It is impractical to develop a Homberg chart for every vehicle or combination of vehicles for which a permit is sought. So in this project, Florida State University researchers used finite element modeling (FEM) to verify and extend current design and evaluation practice for box girder bridges, developing software for the FDOT Office of Maintenance to help in evaluating and permitting vehicles for crossing segmental box girder bridges.
Keywords Axles
Bridge decks transverse
Final element modeling
Load rating
Prestressed concrete
Transverse analysis
Vehicle permit

Source Agency Department of Transportation Office of University Research
NTIS Subject Category 50A - Highway Engineering
85H - Road Transportation
43G - Transportation
91B - Transportation & Traffic Planning
Corporate Author FAMU/FSU Coll. of Engineering, Tallahassee. Dept. of Civil and Environmental Engineering.
Document Type Technical report
Title Note Summary rept.
NTIS Issue Number 1419
Contract Number BDK83-977-16

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