Mechanics of Web Panel Postbuckling Behavior in Shear
Publication: Journal of Structural Engineering
Volume 132, Issue 10
Abstract
This paper revisits a fundamental assumption used in most classical failure theories for postbuckled web plates under shear, namely that the compressive stresses that develop in the direction perpendicular to the tension diagonal do not increase any further once elastic buckling has taken place. This assumption naturally led to a well-known theory that tension field action in plate girders with transverse stiffeners must be anchored by flanges and stiffeners in order for the webs to develop their full postbuckling strength. However, a careful examination of the results of the nonlinear finite-element analyses carried out for this study reveals that the diagonal compression continuously increases in close proximity to the edges after buckling, thereby producing in the web panel a self-equilibrating force system that does not depend on the flanges and stiffeners. These findings provide a fuller understanding of the actual mechanics of tension field action.
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Acknowledgments
Computational assistance for this study was provided by Dr. D. Y. Yoon, Dr. K. Kim, and Mr. J. S. Kang.
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Information & Authors
Information
Published In
Journal of Structural Engineering
Volume 132 • Issue 10 • October 2006
Pages: 1580 - 1589
Copyright
© 2006 ASCE.
History
Received: Sep 9, 2004
Accepted: Oct 5, 2005
Published online: Oct 1, 2006
Published in print: Oct 2006
Notes
Note. Associate Editor: Donald W. White
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