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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...

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Autores principales: Zhao, Lidong, Yu, Yong, Tang, Congrong, Zhong, Licai, Qiu, Qirong
Formato: Online Artículo Texto
Lenguaje:English
Publicado: Public Library of Science 2023
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%.
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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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