Analysis of Some Skew Bridges as Right Bridges
Publication: Journal of Structural Engineering
Volume 114, Issue 10
Abstract
Those methods of bridge analysis that are developed basically for right bridges are also sometimes used for analyzing (skew bridges provided that the angle of skew is less than 20°. A critical review of this practice is presented in this paper, which also contains a recommended procedure for obtaining longitudinal moments with good accuracy in skew slab‐on‐girder bridges by this practice. It is shown that the errors in analyzing skew slab‐on‐girder bridges as right are not characterized by the angle of skew but by two dimensionless parameters, which depend upon the angle of skew, the spacing and span of girders, and their flexural rigidities relative to the flexural rigidity of the deck slab. Recommendations are given for the use of the simplified methods of analysis for skew slab‐on‐girder bridges. It is proposed that bridges having (S tan ) less than 0.05 can be analyzed as equivalent right bridges, where S, L, and ϕ are the girder spacing, bridge span, and angle of skew, respectively.
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Information & Authors
Information
Published In
Journal of Structural Engineering
Volume 114 • Issue 10 • October 1988
Pages: 2307 - 2322
Copyright
Copyright © 1988 ASCE.
History
Published online: Oct 1, 1988
Published in print: Oct 1988
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