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Axial Compression Property Test of GFRP Tube-Confined Coal Gangue Steel Fiber Short Concrete Column

In order to study the axial compression property of a GFRP (glass fiber-reinforced polymer) tube-confined coal gangue steel fiber short concrete column, a test was carried out. The whole process of deformation and failure of the specimen under axial compression load was observed, and the whole proce...

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Autores principales: Xia, Shengyong, Liu, Haiqing, Fu, Guosheng, Zhang, Jinyang, Lei, Ming, Chen, Zimu
Formato: Online Artículo Texto
Lenguaje:English
Publicado: MDPI 2022
Materias:
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC9656301/
https://www.ncbi.nlm.nih.gov/pubmed/36365519
http://dx.doi.org/10.3390/polym14214528
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author Xia, Shengyong
Liu, Haiqing
Fu, Guosheng
Zhang, Jinyang
Lei, Ming
Chen, Zimu
author_facet Xia, Shengyong
Liu, Haiqing
Fu, Guosheng
Zhang, Jinyang
Lei, Ming
Chen, Zimu
author_sort Xia, Shengyong
collection PubMed
description In order to study the axial compression property of a GFRP (glass fiber-reinforced polymer) tube-confined coal gangue steel fiber short concrete column, a test was carried out. The whole process of deformation and failure of the specimen under axial compression load was observed, and the whole process of the stress–strain curve of the specimen was obtained. The results show that the thickness of the GFRP tube has the most significant effect on the mechanical properties. The thickness of the 7 mm tube is 4.3 times the axial ultimate stress and 21.5 times the ultimate strain of the unconstrained short column. Under a certain volume fraction, the ultimate axial strain of the wave fiber is 10.1% higher than that of the hook fiber short column, and the ductility coefficient is 9.6% higher. The fiber volume fraction significantly increases the strain of the short column, and the 3% fiber content is 50.1% higher than that of the non-fiber short column. Finally, three classical strength models of confined concrete were selected for comparative calculation, and a new stress correction model was proposed.
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spelling pubmed-96563012022-11-15 Axial Compression Property Test of GFRP Tube-Confined Coal Gangue Steel Fiber Short Concrete Column Xia, Shengyong Liu, Haiqing Fu, Guosheng Zhang, Jinyang Lei, Ming Chen, Zimu Polymers (Basel) Article In order to study the axial compression property of a GFRP (glass fiber-reinforced polymer) tube-confined coal gangue steel fiber short concrete column, a test was carried out. The whole process of deformation and failure of the specimen under axial compression load was observed, and the whole process of the stress–strain curve of the specimen was obtained. The results show that the thickness of the GFRP tube has the most significant effect on the mechanical properties. The thickness of the 7 mm tube is 4.3 times the axial ultimate stress and 21.5 times the ultimate strain of the unconstrained short column. Under a certain volume fraction, the ultimate axial strain of the wave fiber is 10.1% higher than that of the hook fiber short column, and the ductility coefficient is 9.6% higher. The fiber volume fraction significantly increases the strain of the short column, and the 3% fiber content is 50.1% higher than that of the non-fiber short column. Finally, three classical strength models of confined concrete were selected for comparative calculation, and a new stress correction model was proposed. MDPI 2022-10-26 /pmc/articles/PMC9656301/ /pubmed/36365519 http://dx.doi.org/10.3390/polym14214528 Text en © 2022 by the authors. https://creativecommons.org/licenses/by/4.0/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 (https://creativecommons.org/licenses/by/4.0/).
spellingShingle Article
Xia, Shengyong
Liu, Haiqing
Fu, Guosheng
Zhang, Jinyang
Lei, Ming
Chen, Zimu
Axial Compression Property Test of GFRP Tube-Confined Coal Gangue Steel Fiber Short Concrete Column
title Axial Compression Property Test of GFRP Tube-Confined Coal Gangue Steel Fiber Short Concrete Column
title_full Axial Compression Property Test of GFRP Tube-Confined Coal Gangue Steel Fiber Short Concrete Column
title_fullStr Axial Compression Property Test of GFRP Tube-Confined Coal Gangue Steel Fiber Short Concrete Column
title_full_unstemmed Axial Compression Property Test of GFRP Tube-Confined Coal Gangue Steel Fiber Short Concrete Column
title_short Axial Compression Property Test of GFRP Tube-Confined Coal Gangue Steel Fiber Short Concrete Column
title_sort axial compression property test of gfrp tube-confined coal gangue steel fiber short concrete column
topic Article
url https://www.ncbi.nlm.nih.gov/pmc/articles/PMC9656301/
https://www.ncbi.nlm.nih.gov/pubmed/36365519
http://dx.doi.org/10.3390/polym14214528
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