Maximum Shear Strength of Slender RC Beams with Rectangular Cross Sections
Publication: Journal of Structural Engineering
Volume 141, Issue 7
Abstract
In the present study, the maximum shear strength of simply supported reinforced concrete beams with rectangular cross section was investigated. In beams with heavy shear reinforcement exceeding a certain limit, concrete crushing failure of the compression zone occurs before the yielding of the shear reinforcement. Thus, the maximum shear strength of such members is limited by the concrete crushing failure. In the present study, considering the shear-compression failure mechanism of the compression zone, the maximum shear strength was defined by material failure criteria of the concrete subjected to the combined compressive and shear stresses. The proposed model was applied to specimens tested in the previous studies. The results showed that the proposed method predicted the maximum shear strengths of the specimens with a reasonable precision. Furthermore, a design equation for the maximum shear strength was proposed to secure the ductile flexural behavior of beams without early shear failure.
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Acknowledgments
This research was supported by a grant (13AUDP-B066083-01) from Architecture & Urban Development Research Program funded by Ministry of Land, Infrastructure and Transport of Korean government.
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Published In
Journal of Structural Engineering
Volume 141 • Issue 7 • July 2015
Copyright
© 2014 American Society of Civil Engineers.
History
Received: Nov 1, 2013
Accepted: Jul 16, 2014
Published online: Aug 20, 2014
Discussion open until: Jan 20, 2015
Published in print: Jul 1, 2015
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