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A platform for research: civil engineering, architecture and urbanism
Behavior and Design of Reinforced CFST Columns with Bolted Shear Connectors Under Eccentric Compression
https://orcid.org/http://orcid.org/0000-0002-0651-6951
The combination of steel and concrete improves the mechanical properties of concrete-filled steel tube (CFST) columns. In the present study, the influence of various parameters on the eccentric load-bearing capacity of CFST columns equipped with bolted shear connectors are comprehensively investigated. The parameters considered included the diameter and thickness of the steel tube, the spacing of bolted shear connectors, the diameter of the installed bolts, and the different arrangements of bolts in the end or middle of the columns. Moreover, ABAQUS FE software was utilized for the numerical simulation of the CFST models. The validity of the numerical models was confirmed after comparing the results with those of the experimental evidence. Finally, design relationships were proposed to estimate the bearing capacity of CFST columns based on the optimal distance of bolted shear connectors and the ratio of the diameter to the wall thickness of the steel tube. The key finding of this study is that the application of bolted shear connectors with optimum distances in the CFST columns increases the axial load-bearing capacity by 15% and the bending moment-bearing capacity by 45%. This shows that the influence of the shear bolts on the performance of CFST columns in the case of eccentric loads is much greater than in the case of concentric loads.
Behavior and Design of Reinforced CFST Columns with Bolted Shear Connectors Under Eccentric Compression
https://orcid.org/http://orcid.org/0000-0002-0651-6951
The combination of steel and concrete improves the mechanical properties of concrete-filled steel tube (CFST) columns. In the present study, the influence of various parameters on the eccentric load-bearing capacity of CFST columns equipped with bolted shear connectors are comprehensively investigated. The parameters considered included the diameter and thickness of the steel tube, the spacing of bolted shear connectors, the diameter of the installed bolts, and the different arrangements of bolts in the end or middle of the columns. Moreover, ABAQUS FE software was utilized for the numerical simulation of the CFST models. The validity of the numerical models was confirmed after comparing the results with those of the experimental evidence. Finally, design relationships were proposed to estimate the bearing capacity of CFST columns based on the optimal distance of bolted shear connectors and the ratio of the diameter to the wall thickness of the steel tube. The key finding of this study is that the application of bolted shear connectors with optimum distances in the CFST columns increases the axial load-bearing capacity by 15% and the bending moment-bearing capacity by 45%. This shows that the influence of the shear bolts on the performance of CFST columns in the case of eccentric loads is much greater than in the case of concentric loads.
Behavior and Design of Reinforced CFST Columns with Bolted Shear Connectors Under Eccentric Compression
https://orcid.org/http://orcid.org/0000-0002-0651-6951
The combination of steel and concrete improves the mechanical properties of concrete-filled steel tube (CFST) columns. In the present study, the influence of various parameters on the eccentric load-bearing capacity of CFST columns equipped with bolted shear connectors are comprehensively investigated. The parameters considered included the diameter and thickness of the steel tube, the spacing of bolted shear connectors, the diameter of the installed bolts, and the different arrangements of bolts in the end or middle of the columns. Moreover, ABAQUS FE software was utilized for the numerical simulation of the CFST models. The validity of the numerical models was confirmed after comparing the results with those of the experimental evidence. Finally, design relationships were proposed to estimate the bearing capacity of CFST columns based on the optimal distance of bolted shear connectors and the ratio of the diameter to the wall thickness of the steel tube. The key finding of this study is that the application of bolted shear connectors with optimum distances in the CFST columns increases the axial load-bearing capacity by 15% and the bending moment-bearing capacity by 45%. This shows that the influence of the shear bolts on the performance of CFST columns in the case of eccentric loads is much greater than in the case of concentric loads.
Behavior and Design of Reinforced CFST Columns with Bolted Shear Connectors Under Eccentric Compression
Iran J Sci Technol Trans Civ Eng
Pourmoosavi, Seyed Navid (author) / Labibzadeh, Mojtaba (author) / Hosseinlou, Farhad (author) / Khademalrasoul, Abdolghafour (author)
2024-02-01
19 pages
Article (Journal)
Electronic Resource
English
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