Negative Shear Lag Explained
Publication: Journal of Structural Engineering
Volume 117, Issue 11
Abstract
The problem of negative shear lag in a cantilever beam subjected to a uniform load is explained in nonmathematical terms. In essence, the problem is one of two components (uniform-load component and concentrated reaction component), each of which is subjected to positive shear lag, being combined such that negative shear lag is produced. The key ingredient for negative shear lag is that the predominant component dampen faster than the less predominant component. This explanation is confirmed by using the folded-plate method to study an example problem.
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References
1.
Chang, S. T., and Zheng, F. Z. (1987), “Negative shear lag in cantilever box girder with constant depth.” J. Struct. Engrg., ASCE, 113(1), 20–35.
2.
Foutch, D. A., and Chang, P. C. (1982). “A shear lag anomaly.” J. Struct. Engrg., ASCE, 108(7), 1653–1658.
3.
Kristek, V., and Studnicka, J. (1988). Discussion of “Negative shear lag in cantilever box girder with constant depth” by S. T. Chang and F. Z. Zheng. J. Struct. Engrg., ASCE, 114(9), 2168–2172.
4.
Maisel, B. I. (1986). “Shear lag analysis of concrete box beams using small computer capacity.” Proc. 2nd Int. Conf. on Short and Medium Span Bridges. Canadian Society of Civil Engineers, 125–137.
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Song, Q., and Scordelis, A. C. (1990). “Shear lag analysis of T‐, I‐, and box beams.” J. Struct. Engrg., ASCE, 116(5), 1290–1305.
Information & Authors
Information
Published In
Journal of Structural Engineering
Volume 117 • Issue 11 • November 1991
Pages: 3543 - 3546
Copyright
Copyright © 1991 ASCE.
History
Published online: Nov 1, 1991
Published in print: Nov 1991
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