Introduction to Steel Bridge Design Session L3

Effects of Curvature and Skew

This session will address the behavior, analysis, and construction of curved and skewed steel I-girder bridges. The session will begin with a discussion of how steel I-girders and their connecting cross-frames fit together during erection, which will establish the framework for the class. Then the behavior of curved and skewed steel I-girder bridges will be reviewed, with an emphasis on behaviors unique to these types of structures (torsional stresses and deformations, global overturning, etc.). Various analysis methods for curved and skewed steel I-girder bridges will be described and compared, including 1D, 2D, and 3D analysis methods. The effects of boundary conditions, span length, curvature, and skew will also be presented. The session will then transition to a discussion of the fabrication and erection processes associated with fit, including fabrication detailing, girder and cross frame fabrication, and girder and cross frame erection practices

This presentation is part of the Introduction to Steel Bridge Design webinar series. 

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