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Materials 2017, 10(6), 669; doi:10.3390/ma10060669

Influence of Tension Stiffening on the Flexural Stiffness of Reinforced Concrete Circular Sections

Department of Civil and Industrial Engineering, University of Pisa, 56126 Pisa PI, Italy
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Received: 8 May 2017 / Revised: 14 June 2017 / Accepted: 14 June 2017 / Published: 18 June 2017
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Abstract

Within this paper, the assessment of tension stiffening effects on a reinforced concrete element with the circular sections subjected to axial and bending loads is presented. To this purpose, an enhancement of an analytical model already present within the actual technical literature is proposed. The accuracy of the enhanced method is assessed by comparing the experimental results carried out in past research and the numerical ones obtained by the model. Finally, a parametric study is executed in order to study the influence of axial compressive force on the flexural stiffness of reinforced concrete elements that are characterized by a circular section, comparing the secant stiffness evaluated at yielding and at maximum resistance, considering and not considering the effects of tension stiffness. View Full-Text
Keywords: tension stiffening; circular section; flexural behavior; concrete cracking; numerical model tension stiffening; circular section; flexural behavior; concrete cracking; numerical model
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MDPI and ACS Style

Morelli, F.; Amico, C.; Salvatore, W.; Squeglia, N.; Stacul, S. Influence of Tension Stiffening on the Flexural Stiffness of Reinforced Concrete Circular Sections. Materials 2017, 10, 669.

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