Shear Lag of Thin-Walled Curved Box Girder Bridges
Publication: Journal of Engineering Mechanics
Volume 126, Issue 10
Abstract
This note investigates the influence of shear lag for thin-walled curved box girders, including longitudinal warping. The longitudinal warping displacement functions of the flange slabs are approximated by a cubic parabolic curve instead of a quadratic curve of Reissner's method. On the basis of the thin-walled curved bar theory and the potential variational principle, the equations of equilibrium considering the shear lag, bending, and torsion (St. Venant and warping) for a thin-walled curved box girder are established. The closed-form solutions of the equations are derived, and Vlasov's equation is further developed. The obtained formulas are applied to calculate the shear lag effects for curved box girder bridges. Numerical examples are presented to verify the accuracy and applicability of the present method.
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References
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Information & Authors
Information
Published In
Journal of Engineering Mechanics
Volume 126 • Issue 10 • October 2000
Pages: 1111 - 1114
History
Received: Mar 16, 1998
Published online: Oct 1, 2000
Published in print: Oct 2000
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