Macro-mechanical strut and tie model for analysis of fibrous high-strength concrete corbels

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Abstract

Reinforced concrete (RC) corbels becoming a frequent attribute in the building construction with the increasing use of pre-cast high-strength concrete (HSC). The use of fibrous high-strength concrete (FHSC), increases corbel ductility and thus defines the mode of failure of the corbels, depending on the fiber parameters. In this paper a macro-mechanical strut and tie model is proposed for analysis of fibrous high-strength concrete corbels. In this model the fibers can be used as a replacement of horizontal stirrups, due to increasing of shear friction of (FHSC). The analytical macro-mechanical model takes into consideration the effect of fiber volume, fiber length, and fiber diameter, random distribution of fibers, fiber HSC interface and shear span-to-depth ratio, respectively. This model is compared with available experimental results found in literature and a good agreement is obtained. The parametric study is performed to examine for different parameters affecting the analysis of (FHSC) corbels using the proposed macro-mechanical strut and tie model. © 2012 Ain Shams University. Production and hosting by Elsevier B.V. All rights reserved.

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Khalifa, E. S. (2012). Macro-mechanical strut and tie model for analysis of fibrous high-strength concrete corbels. Ain Shams Engineering Journal, 3(4), 359–365. https://doi.org/10.1016/j.asej.2012.04.004

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