Effect of vibration on the interface properties of welded steel joints and filled concrete in steel pipes.
Bond-slip performance
Concrete-filled steel tube (CFST)
Internally welded steel structures
Push-out tests
Vibratory
Journal
Scientific reports
ISSN: 2045-2322
Titre abrégé: Sci Rep
Pays: England
ID NLM: 101563288
Informations de publication
Date de publication:
02 Sep 2024
02 Sep 2024
Historique:
received:
19
04
2024
accepted:
22
07
2024
medline:
3
9
2024
pubmed:
3
9
2024
entrez:
2
9
2024
Statut:
epublish
Résumé
Concrete-filled steel tubes (CFSTs) have been increasingly utilized in engineering due to their excellent mechanical properties. Ensuring a solid bond between a steel tube and concrete is essential for optimizing their synergistic effect. This study introduces an internally welded steel bar structure within the inner wall of a steel tube to enhance the bond properties at the connection interface. The influence of various configurations of steel bars welded to the inner surface of the tube on the bond strength is investigated considering the impact of vibration on the load-bearing capacity of the component. This study comprises two groups of specimens, one with vibration and one without vibration, for a total of ten specimens. Each group included CFST members with five distinct internal welded steel bar structures. The experimental results, including load-displacement curves and strain data of the steel tube, were used to assess the impact of the internal welded steel bar configurations on the steel-concrete interface. The sliding process is described by correlating test data with curves and observed phenomena. To comprehensively compare the effects of structural dimensions on the bonding and slipping properties of the welded bars, finite element simulations replicating the experimental conditions were carried out using ABAQUS software, and the simulation results agreed with the experimental observations. The study demonstrated that incorporating internal welded steel bars substantially enhances the bond strength of steel pipe-concrete interfaces. While vibration weakens the bond strength in CFST members, internal welded steel bars mitigate this effect. These findings improve the structural performance of CFST structures and their resilience to external vibrations.
Identifiants
pubmed: 39223173
doi: 10.1038/s41598-024-68186-0
pii: 10.1038/s41598-024-68186-0
doi:
Types de publication
Journal Article
Langues
eng
Sous-ensembles de citation
IM
Pagination
20391Subventions
Organisme : China's National Natural Science Foundation
ID : 52268048
Organisme : China's National Natural Science Foundation
ID : 52268048
Organisme : China's National Natural Science Foundation
ID : 52268048
Organisme : China's National Natural Science Foundation
ID : 52268048
Organisme : China's National Natural Science Foundation
ID : 52268048
Organisme : China's National Natural Science Foundation
ID : 52268048
Organisme : Guangxi Science and Technology Major Project of China
ID : Gui-KEAA22068066
Organisme : Guangxi Science and Technology Major Project of China
ID : Gui-KEAA22068066
Organisme : Guangxi Science and Technology Major Project of China
ID : Gui-KEAA22068066
Organisme : Guangxi Science and Technology Major Project of China
ID : Gui-KEAA22068066
Organisme : Guangxi Science and Technology Major Project of China
ID : Gui-KEAA22068066
Organisme : Guangxi Science and Technology Major Project of China
ID : Gui-KEAA22068066
Informations de copyright
© 2024. The Author(s).
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