Field Evaluation of Cross-Frame and Girder Live-Load Response in Skewed Steel I-Girder Bridges
A better understanding of the relationships among girder stresses, cross-frame design, and skew angle of two steel I-girder bridges, which have moderate and high levels of skew and differing cross-frame designs, was revealed via field testing under various load passes of a weighed load vehicle. Strains were measured at approximately 100 points on the two structures, and the majority of the instrumentation was located on the cross-frames. The data were analyzed in terms of vertical bending, lateral bending, and warping in the girders, and in the magnitudes and distribution of stresses in the cross-frames of the two structures. These metrics were compared between the two bridges and in relation to the assumptions typically used in contemporary bridge analysis. This comparison revealed the following: the magnitudes of lateral stresses were higher than current design guidance suggests in some cases when staggered cross-frames were used; significant magnitudes of warping stresses in the girder webs, which state-of-the-art analysis methods generally fail to consider; and cross-frame stresses that exceeded the values typically considered in design.
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Availability:
- Find a library where document is available. Order URL: http://worldcat.org/oclc/32947845
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Supplemental Notes:
- © 2015 American Society of Civil Engineers.
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Authors:
- McConnell, Jennifer Righman
- Radovic, Matija
- Ambrose, Kelly
- Publication Date: 2016-3
Language
- English
Media Info
- Media Type: Web
- Features: References;
- Pagination: 04015062
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Serial:
- Journal of Bridge Engineering
- Volume: 21
- Issue Number: 3
- Publisher: American Society of Civil Engineers
- ISSN: 1084-0702
- Serial URL: http://ojps.aip.org/beo
Subject/Index Terms
- TRT Terms: Bending; Bridge design; Bridge members; Girder bridges; Skew bridges; Steel bridges; Traffic loads; Warpage
- Subject Areas: Bridges and other structures; Design; Highways; I24: Design of Bridges and Retaining Walls;
Filing Info
- Accession Number: 01587521
- Record Type: Publication
- Files: TRIS, ASCE
- Created Date: Jan 27 2016 5:10PM