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Axial compression performance of square concrete filled double skin SHS steel tubular columns confined by CFRP
This paper focuses on the axial compression performance of 15 concrete-filled double skinned tubes CFDST columns with different CFRP reinforcement schemes. The design of this test used an outer square steel tube with a square steel tube inside, with concrete poured at the sandwich and the inner stee...
Autores principales: | , , , |
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Formato: | Online Artículo Texto |
Lenguaje: | English |
Publicado: |
Nature Publishing Group UK
2023
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Materias: | |
Acceso en línea: | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC10284881/ https://www.ncbi.nlm.nih.gov/pubmed/37344619 http://dx.doi.org/10.1038/s41598-023-37101-4 |
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author | Wang, Caisen Liang, Jiongfeng Li, Wei He, Chunfeng |
author_facet | Wang, Caisen Liang, Jiongfeng Li, Wei He, Chunfeng |
author_sort | Wang, Caisen |
collection | PubMed |
description | This paper focuses on the axial compression performance of 15 concrete-filled double skinned tubes CFDST columns with different CFRP reinforcement schemes. The design of this test used an outer square steel tube with a square steel tube inside, with concrete poured at the sandwich and the inner steel tube kept hollow. The structure is both cost effective and allows the hollow to be used for utility access. However, in recent years damage to CFDST has occurred due to fire, earthquakes, corrosion etc. Therefore, research into the reinforcement and repair of this structure is crucial. Compared to other reinforcement methods, FRP has the advantage of being lighter and more robust and does not significantly alter the original structure. In this study, the mechanical properties of the specimens were further analyzed from the data of load displacement, peak load and ultimate displacement by mainly observing and analyzing the damage mechanism of the specimens through the strengthening effect of different strengthening schemes for different hollow ratios. The results show that when the hollow ratio is not bigger than 0.33, the CFRP reinforcement effect is relatively obvious, especially the three-layer CFRP wrapped CFDST specimens have a substantial increase in bearing capacity and stiffness. Finally, an analytical study was carried out based on previous research and the experimental results agreed well with the calculated results. |
format | Online Article Text |
id | pubmed-10284881 |
institution | National Center for Biotechnology Information |
language | English |
publishDate | 2023 |
publisher | Nature Publishing Group UK |
record_format | MEDLINE/PubMed |
spelling | pubmed-102848812023-06-23 Axial compression performance of square concrete filled double skin SHS steel tubular columns confined by CFRP Wang, Caisen Liang, Jiongfeng Li, Wei He, Chunfeng Sci Rep Article This paper focuses on the axial compression performance of 15 concrete-filled double skinned tubes CFDST columns with different CFRP reinforcement schemes. The design of this test used an outer square steel tube with a square steel tube inside, with concrete poured at the sandwich and the inner steel tube kept hollow. The structure is both cost effective and allows the hollow to be used for utility access. However, in recent years damage to CFDST has occurred due to fire, earthquakes, corrosion etc. Therefore, research into the reinforcement and repair of this structure is crucial. Compared to other reinforcement methods, FRP has the advantage of being lighter and more robust and does not significantly alter the original structure. In this study, the mechanical properties of the specimens were further analyzed from the data of load displacement, peak load and ultimate displacement by mainly observing and analyzing the damage mechanism of the specimens through the strengthening effect of different strengthening schemes for different hollow ratios. The results show that when the hollow ratio is not bigger than 0.33, the CFRP reinforcement effect is relatively obvious, especially the three-layer CFRP wrapped CFDST specimens have a substantial increase in bearing capacity and stiffness. Finally, an analytical study was carried out based on previous research and the experimental results agreed well with the calculated results. Nature Publishing Group UK 2023-06-21 /pmc/articles/PMC10284881/ /pubmed/37344619 http://dx.doi.org/10.1038/s41598-023-37101-4 Text en © The Author(s) 2023 https://creativecommons.org/licenses/by/4.0/Open Access This article is licensed under a Creative Commons Attribution 4.0 International License, which permits use, sharing, adaptation, distribution and reproduction in any medium or format, as long as you give appropriate credit to the original author(s) and the source, provide a link to the Creative Commons licence, and indicate if changes were made. The images or other third party material in this article are included in the article's Creative Commons licence, unless indicated otherwise in a credit line to the material. If material is not included in the article's Creative Commons licence and your intended use is not permitted by statutory regulation or exceeds the permitted use, you will need to obtain permission directly from the copyright holder. To view a copy of this licence, visit http://creativecommons.org/licenses/by/4.0/ (https://creativecommons.org/licenses/by/4.0/) . |
spellingShingle | Article Wang, Caisen Liang, Jiongfeng Li, Wei He, Chunfeng Axial compression performance of square concrete filled double skin SHS steel tubular columns confined by CFRP |
title | Axial compression performance of square concrete filled double skin SHS steel tubular columns confined by CFRP |
title_full | Axial compression performance of square concrete filled double skin SHS steel tubular columns confined by CFRP |
title_fullStr | Axial compression performance of square concrete filled double skin SHS steel tubular columns confined by CFRP |
title_full_unstemmed | Axial compression performance of square concrete filled double skin SHS steel tubular columns confined by CFRP |
title_short | Axial compression performance of square concrete filled double skin SHS steel tubular columns confined by CFRP |
title_sort | axial compression performance of square concrete filled double skin shs steel tubular columns confined by cfrp |
topic | Article |
url | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC10284881/ https://www.ncbi.nlm.nih.gov/pubmed/37344619 http://dx.doi.org/10.1038/s41598-023-37101-4 |
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