Simplified Shear Design of Slender Reinforced Concrete Beams with Stirrups
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Volume 142, Issue 2
Abstract
For simplified shear design of slender reinforced concrete (RC) beams with stirrups, a modified variable-angle truss model is developed in this paper. In this model, an analytical solution of the inclination of struts () is derived by combining the theory of plasticity and the concrete softening of the modified compression field theory (MCFT). It is found that there is a decreasing linear relationship between and , where is the natural logarithm of the mechanical shear-reinforcement ratio. On this basis, a new shear design equation is proposed for slender RC beams with stirrups, which is shown to be not only simpler, but to also provide improved prediction compared with the shear design provisions of some of the existing codes.
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Acknowledgments
This study was supported by National Natural Science Foundation of China (51408116 and 51278120), Natural Science Foundation of Jiangsu Province (BK20140630), and Transportation Research Program of Jiangsu Province (2014Y01). The financial supports are greatly appreciated.
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Published In
Journal of Structural Engineering
Volume 142 • Issue 2 • February 2016
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© 2015 American Society of Civil Engineers.
History
Received: Jan 15, 2015
Accepted: Jul 9, 2015
Published online: Aug 20, 2015
Discussion open until: Jan 20, 2016
Published in print: Feb 1, 2016
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