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A unified approach for determining the ultimate strength of RC members subjected to combined axial force, bending, shear and torsion
This paper uses experimental investigation and theoretical derivation to study the unified failure mechanism and ultimate capacity model of reinforced concrete (RC) members under combined axial, bending, shear and torsion loading. Fifteen RC members are tested under different combinations of compres...
Autores principales: | , |
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Formato: | Online Artículo Texto |
Lenguaje: | English |
Publicado: |
Public Library of Science
2017
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Materias: | |
Acceso en línea: | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC5393873/ https://www.ncbi.nlm.nih.gov/pubmed/28414777 http://dx.doi.org/10.1371/journal.pone.0175834 |
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author | Wang, Pu Huang, Zhen |
author_facet | Wang, Pu Huang, Zhen |
author_sort | Wang, Pu |
collection | PubMed |
description | This paper uses experimental investigation and theoretical derivation to study the unified failure mechanism and ultimate capacity model of reinforced concrete (RC) members under combined axial, bending, shear and torsion loading. Fifteen RC members are tested under different combinations of compressive axial force, bending, shear and torsion using experimental equipment designed by the authors. The failure mechanism and ultimate strength data for the four groups of tested RC members under different combined loading conditions are investigated and discussed in detail. The experimental research seeks to determine how the ultimate strength of RC members changes with changing combined loads. According to the experimental research, a unified theoretical model is established by determining the shape of the warped failure surface, assuming an appropriate stress distribution on the failure surface, and considering the equilibrium conditions. This unified failure model can be reasonably and systematically changed into well-known failure theories of concrete members under single or combined loading. The unified calculation model could be easily used in design applications with some assumptions and simplifications. Finally, the accuracy of this theoretical unified model is verified by comparisons with experimental results. |
format | Online Article Text |
id | pubmed-5393873 |
institution | National Center for Biotechnology Information |
language | English |
publishDate | 2017 |
publisher | Public Library of Science |
record_format | MEDLINE/PubMed |
spelling | pubmed-53938732017-05-04 A unified approach for determining the ultimate strength of RC members subjected to combined axial force, bending, shear and torsion Wang, Pu Huang, Zhen PLoS One Research Article This paper uses experimental investigation and theoretical derivation to study the unified failure mechanism and ultimate capacity model of reinforced concrete (RC) members under combined axial, bending, shear and torsion loading. Fifteen RC members are tested under different combinations of compressive axial force, bending, shear and torsion using experimental equipment designed by the authors. The failure mechanism and ultimate strength data for the four groups of tested RC members under different combined loading conditions are investigated and discussed in detail. The experimental research seeks to determine how the ultimate strength of RC members changes with changing combined loads. According to the experimental research, a unified theoretical model is established by determining the shape of the warped failure surface, assuming an appropriate stress distribution on the failure surface, and considering the equilibrium conditions. This unified failure model can be reasonably and systematically changed into well-known failure theories of concrete members under single or combined loading. The unified calculation model could be easily used in design applications with some assumptions and simplifications. Finally, the accuracy of this theoretical unified model is verified by comparisons with experimental results. Public Library of Science 2017-04-17 /pmc/articles/PMC5393873/ /pubmed/28414777 http://dx.doi.org/10.1371/journal.pone.0175834 Text en © 2017 Wang, Huang http://creativecommons.org/licenses/by/4.0/ This is an open access article distributed under the terms of the Creative Commons Attribution License (http://creativecommons.org/licenses/by/4.0/) , which permits unrestricted use, distribution, and reproduction in any medium, provided the original author and source are credited. |
spellingShingle | Research Article Wang, Pu Huang, Zhen A unified approach for determining the ultimate strength of RC members subjected to combined axial force, bending, shear and torsion |
title | A unified approach for determining the ultimate strength of RC members subjected to combined axial force, bending, shear and torsion |
title_full | A unified approach for determining the ultimate strength of RC members subjected to combined axial force, bending, shear and torsion |
title_fullStr | A unified approach for determining the ultimate strength of RC members subjected to combined axial force, bending, shear and torsion |
title_full_unstemmed | A unified approach for determining the ultimate strength of RC members subjected to combined axial force, bending, shear and torsion |
title_short | A unified approach for determining the ultimate strength of RC members subjected to combined axial force, bending, shear and torsion |
title_sort | unified approach for determining the ultimate strength of rc members subjected to combined axial force, bending, shear and torsion |
topic | Research Article |
url | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC5393873/ https://www.ncbi.nlm.nih.gov/pubmed/28414777 http://dx.doi.org/10.1371/journal.pone.0175834 |
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