Analysis of Steel Girder Bridges

Coletti, Domenic; Yadlosky, John M.

doi:10.3141/2050-07

Cited by 4 publications

(2 citation statements)

References 5 publications

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“…The examples above are just a sample of how straight girders in a skewed bridge exhibit similar behavior to curved girders and why they must be designed by using many of the same approaches. Numerous references offer good discussions of the effects of curvature and skew in steel girder bridges (3)(4)(5)(6)(7)(8)(9)(10)(11)(12)(13).…”

Section: Effects Of Skew On Behavior Of Steel I-girder Bridgesmentioning

confidence: 99%

Challenges of Skew in Bridges with Steel Girders

Coletti¹,

Chavel²,

Gatti³

2011

Transportation Research Record: Journal of the Transportation R

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Steel girder bridges in particular can suffer the consequences of skew, and addressing the topic of how to mitigate the effects of skew in these structures is important. This paper addresses skew in several contexts, including how skew affects the behavior of steel girder bridges and their components as well as the impacts of skew on the detailing, fabrication, and erection of steel girder bridges. In addition to discussing the problems associated with skew, the paper offers ideas and techniques for minimizing or avoiding skew and for analyzing, understanding, and mitigating the effects of skew when it cannot be avoided.

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Section: Effects Of Skew On Behavior Of Steel I-girder Bridgesmentioning

confidence: 99%

Challenges of Skew in Bridges with Steel Girders

Coletti¹,

Chavel²,

Gatti³

2011

Transportation Research Record: Journal of the Transportation R

Self Cite

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“…LGA and 2D GA, not taking into account the warping stiffness of the girders, evaluate erroneous structural responses [15] [16].…”

Section: Introductionmentioning

confidence: 99%

Comprehending Performance of Cross-Frames in Skewed Straight Steel I-Girder Bridges

Gull¹

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The effects of support in steel bridges can present significant challenges during the construction. The tendency of girders to twist or layovers during the construction can present a particularly challenging problem regarding detailing cross-frames that provide bracing to steel girders. Methods of detailing cross-frames have been investigated in the past to identify some of the issues related to the behavior of straight and skewed steel bridges. However, the absence of a complete and simplified design approach has led to disputes between stakeholders, costly repairs and delays in the construction.The main objective of this research is to develop a complete and simplified design approach considering construction, fabrication and detailing of skewed bridges. This objective is achieved by comparing different detailing methods, understanding the mechanism by which skew effects develop in steel bridges, recommending simplified methods of analysis to evaluate them, and developing a complete and simplified design procedure for skew bridges. The main conclusion of this research is that lack-of-fit effects for the Final Fit detailing method at the steel dead load stage are equal and opposite to the lack-of-fit effects for the Erected Fit detailing method at the total dead load stage. This conclusion has helped using 2D grid analyses for estimating these lack-of-fit effects for different detailing methods.

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