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Limit Equilibrium Method-based Shear Strength Prediction for Corroded Reinforced Concrete Beam with Inclined Bars

Shear strength is a widely investigated parameter for reinforced concrete structures. The corrosion of reinforcement results in shear strength reduction. Corrosion has become one of the main deterioration factors in reinforced concrete beam. This paper proposes a shear strength model for beams with...

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Detalles Bibliográficos
Autores principales: Ma, Yafei, Lu, Baoyong, Guo, Zhongzhao, Wang, Lei, Chen, Hailong, Zhang, Jianren
Formato: Online Artículo Texto
Lenguaje:English
Publicado: MDPI 2019
Materias:
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC6480138/
https://www.ncbi.nlm.nih.gov/pubmed/30934745
http://dx.doi.org/10.3390/ma12071014
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author Ma, Yafei
Lu, Baoyong
Guo, Zhongzhao
Wang, Lei
Chen, Hailong
Zhang, Jianren
author_facet Ma, Yafei
Lu, Baoyong
Guo, Zhongzhao
Wang, Lei
Chen, Hailong
Zhang, Jianren
author_sort Ma, Yafei
collection PubMed
description Shear strength is a widely investigated parameter for reinforced concrete structures. The corrosion of reinforcement results in shear strength reduction. Corrosion has become one of the main deterioration factors in reinforced concrete beam. This paper proposes a shear strength model for beams with inclined bars based on a limit equilibrium method. The proposed model can be applied to both corroded and uncorroded reinforced concrete beams. Besides the tensile strength of longitudinal steel bars, the shear capacity provided by the concrete on the top of the diagonal crack, the tensile force of the shear steel at the diagonal crack, the degradation of the cross-sectional area and strength of the reinforcements induced by corrosion are all considered. An experimental work on two groups accelerated corroded beams was performed. Good agreements were found between the proposed theoretical predictions and experimental observations.
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spelling pubmed-64801382019-04-29 Limit Equilibrium Method-based Shear Strength Prediction for Corroded Reinforced Concrete Beam with Inclined Bars Ma, Yafei Lu, Baoyong Guo, Zhongzhao Wang, Lei Chen, Hailong Zhang, Jianren Materials (Basel) Article Shear strength is a widely investigated parameter for reinforced concrete structures. The corrosion of reinforcement results in shear strength reduction. Corrosion has become one of the main deterioration factors in reinforced concrete beam. This paper proposes a shear strength model for beams with inclined bars based on a limit equilibrium method. The proposed model can be applied to both corroded and uncorroded reinforced concrete beams. Besides the tensile strength of longitudinal steel bars, the shear capacity provided by the concrete on the top of the diagonal crack, the tensile force of the shear steel at the diagonal crack, the degradation of the cross-sectional area and strength of the reinforcements induced by corrosion are all considered. An experimental work on two groups accelerated corroded beams was performed. Good agreements were found between the proposed theoretical predictions and experimental observations. MDPI 2019-03-27 /pmc/articles/PMC6480138/ /pubmed/30934745 http://dx.doi.org/10.3390/ma12071014 Text en © 2019 by the authors. Licensee MDPI, Basel, Switzerland. This article is an open access article distributed under the terms and conditions of the Creative Commons Attribution (CC BY) license (http://creativecommons.org/licenses/by/4.0/).
spellingShingle Article
Ma, Yafei
Lu, Baoyong
Guo, Zhongzhao
Wang, Lei
Chen, Hailong
Zhang, Jianren
Limit Equilibrium Method-based Shear Strength Prediction for Corroded Reinforced Concrete Beam with Inclined Bars
title Limit Equilibrium Method-based Shear Strength Prediction for Corroded Reinforced Concrete Beam with Inclined Bars
title_full Limit Equilibrium Method-based Shear Strength Prediction for Corroded Reinforced Concrete Beam with Inclined Bars
title_fullStr Limit Equilibrium Method-based Shear Strength Prediction for Corroded Reinforced Concrete Beam with Inclined Bars
title_full_unstemmed Limit Equilibrium Method-based Shear Strength Prediction for Corroded Reinforced Concrete Beam with Inclined Bars
title_short Limit Equilibrium Method-based Shear Strength Prediction for Corroded Reinforced Concrete Beam with Inclined Bars
title_sort limit equilibrium method-based shear strength prediction for corroded reinforced concrete beam with inclined bars
topic Article
url https://www.ncbi.nlm.nih.gov/pmc/articles/PMC6480138/
https://www.ncbi.nlm.nih.gov/pubmed/30934745
http://dx.doi.org/10.3390/ma12071014
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