Flexural Response of RC Beams Failing in Shear
Publication: Practice Periodical on Structural Design and Construction
Volume 25, Issue 4
Abstract
In this paper, an analytical model to determine the flexural response of simply supported RC beams under four-point bending tests failing in flexure and shear is presented. The model is able to provide load-deflection curves, including also the shear contributions, which are determined assuming a kinematic rigid plastic model able to consider different strength contributions such as the concrete, the dowel action, and transverse reinforcement with progressive yielding. For each contribution, a physical explanation is provided to link the strength evaluation with a specific kinematic evolution for the determination of the overall response of RC beams under combined shear and flexural loads. An extensive comparison with the experimental data available in the literature is made to check the reliability of the simplified proposed model to predict also the complete flexural response of beams including postpeak resistance when shear failure is attained. The comparisons revealed good agreement between the experimental and analytical results. The proposed model can be simply used for manual calculations of the flexural response of RC beams that fail in flexure or shear.
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Data Availability Statement
No data, models, or code were generated or used during the study.
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Published In
Practice Periodical on Structural Design and Construction
Volume 25 • Issue 4 • November 2020
Copyright
©2020 American Society of Civil Engineers.
History
Received: Dec 13, 2019
Accepted: Mar 19, 2020
Published online: Jun 30, 2020
Published in print: Nov 1, 2020
Discussion open until: Nov 30, 2020
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