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Seismic performance and bearing capacity calculation of cross shaped concrete columns with built-in T-shaped steel and steel tubes
Incorporating T-shaped steel and square steel tubes into a cross shaped concrete column can significantly improve the seismic performance of the cross shaped column. However, the experimental samples are limited, so ABAQUS finite element (FE) analysis method was adopted in this paper to study the se...
Autores principales: | , , , , |
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Formato: | Online Artículo Texto |
Lenguaje: | English |
Publicado: |
Public Library of Science
2023
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Materias: | |
Acceso en línea: | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC10655983/ https://www.ncbi.nlm.nih.gov/pubmed/37976290 http://dx.doi.org/10.1371/journal.pone.0290426 |
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author | Zhao, Lidong Yu, Yong Tang, Congrong Zhong, Licai Qiu, Qirong |
author_facet | Zhao, Lidong Yu, Yong Tang, Congrong Zhong, Licai Qiu, Qirong |
author_sort | Zhao, Lidong |
collection | PubMed |
description | Incorporating T-shaped steel and square steel tubes into a cross shaped concrete column can significantly improve the seismic performance of the cross shaped column. However, the experimental samples are limited, so ABAQUS finite element (FE) analysis method was adopted in this paper to study the seismic performance of this cross shaped column, calculate and verify three specimens in the existing reference. Based on the reliable model, parameter analysis was carried out (25 specimens in total). The results show that the established model has a high degree of coincidence in the hysteretic curve, skeleton curve and failure mode, and the error of ultimate bearing capacity and ductility is within 10%. The configuration of T-shaped steel and square steel tubes inside the cross column can meet the ductility requirements specified in the standard under high axial compression ratio. The ultimate bearing capacity of the cross shaped column increases with the increase of the thickness of the square steel tube, but the ductility deteriorates. The increase in steel tube size increases the strength of the concrete in the core area, and the seismic performance of the cross shaped column was improved. Increasing the thickness of the T-shaped steel flange can better improve the seismic performance of the cross shaped column compared to increasing the thickness of the T-shaped steel web plate. Increasing the height of the specimen will significantly reduce its seismic performance. When the shear span ratio is not greater than 4.1, the ductility can meet the standard requirements. The error of the formula for calculating the compression-bending bearing capacity proposed based on existing calculation methods is less than 5%. |
format | Online Article Text |
id | pubmed-10655983 |
institution | National Center for Biotechnology Information |
language | English |
publishDate | 2023 |
publisher | Public Library of Science |
record_format | MEDLINE/PubMed |
spelling | pubmed-106559832023-11-17 Seismic performance and bearing capacity calculation of cross shaped concrete columns with built-in T-shaped steel and steel tubes Zhao, Lidong Yu, Yong Tang, Congrong Zhong, Licai Qiu, Qirong PLoS One Research Article Incorporating T-shaped steel and square steel tubes into a cross shaped concrete column can significantly improve the seismic performance of the cross shaped column. However, the experimental samples are limited, so ABAQUS finite element (FE) analysis method was adopted in this paper to study the seismic performance of this cross shaped column, calculate and verify three specimens in the existing reference. Based on the reliable model, parameter analysis was carried out (25 specimens in total). The results show that the established model has a high degree of coincidence in the hysteretic curve, skeleton curve and failure mode, and the error of ultimate bearing capacity and ductility is within 10%. The configuration of T-shaped steel and square steel tubes inside the cross column can meet the ductility requirements specified in the standard under high axial compression ratio. The ultimate bearing capacity of the cross shaped column increases with the increase of the thickness of the square steel tube, but the ductility deteriorates. The increase in steel tube size increases the strength of the concrete in the core area, and the seismic performance of the cross shaped column was improved. Increasing the thickness of the T-shaped steel flange can better improve the seismic performance of the cross shaped column compared to increasing the thickness of the T-shaped steel web plate. Increasing the height of the specimen will significantly reduce its seismic performance. When the shear span ratio is not greater than 4.1, the ductility can meet the standard requirements. The error of the formula for calculating the compression-bending bearing capacity proposed based on existing calculation methods is less than 5%. Public Library of Science 2023-11-17 /pmc/articles/PMC10655983/ /pubmed/37976290 http://dx.doi.org/10.1371/journal.pone.0290426 Text en © 2023 Zhao et al https://creativecommons.org/licenses/by/4.0/This is an open access article distributed under the terms of the Creative Commons Attribution License (https://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 Zhao, Lidong Yu, Yong Tang, Congrong Zhong, Licai Qiu, Qirong Seismic performance and bearing capacity calculation of cross shaped concrete columns with built-in T-shaped steel and steel tubes |
title | Seismic performance and bearing capacity calculation of cross shaped concrete columns with built-in T-shaped steel and steel tubes |
title_full | Seismic performance and bearing capacity calculation of cross shaped concrete columns with built-in T-shaped steel and steel tubes |
title_fullStr | Seismic performance and bearing capacity calculation of cross shaped concrete columns with built-in T-shaped steel and steel tubes |
title_full_unstemmed | Seismic performance and bearing capacity calculation of cross shaped concrete columns with built-in T-shaped steel and steel tubes |
title_short | Seismic performance and bearing capacity calculation of cross shaped concrete columns with built-in T-shaped steel and steel tubes |
title_sort | seismic performance and bearing capacity calculation of cross shaped concrete columns with built-in t-shaped steel and steel tubes |
topic | Research Article |
url | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC10655983/ https://www.ncbi.nlm.nih.gov/pubmed/37976290 http://dx.doi.org/10.1371/journal.pone.0290426 |
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