United States Department of Transportation
i
Steel framing strategies for highly skewed bridges to reduce/eliminate distortion near skewed supports : [summary].
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2014-05-01
[PDF-837.45 KB]
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Abstract:In the past, bridges were aligned normal to crossing roads or obstacles in order to simplify bridge construction. However, the continuing expansion of the interstate system has challenged engineers to provide more horizontal clearance, reduce right-of-way impacts, and increase traffic flow, which have all lead to complex roadway alignments that require the use of skewed supports. Construction of highly skewed steel bridges often faces significant challenges due to the effects of the skewed supports on the framing of the bridge. Designing cross-frames is a challenging problem on its own, complicated by the ways a bridge changes at different construction stages, particularly as adding the deck changes the loading of the girders.
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