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Hysteresis performance of through bolted connections in CFST frame
https://orcid.org/http://orcid.org/0000-0002-9943-8461
https://orcid.org/http://orcid.org/0000-0002-3167-6287
https://orcid.org/http://orcid.org/0000-0001-5705-9634
This paper presents an experimental study on the seismic performance of composite structural frame systems consisting of concrete-filled steel tubes (CFSTs) and steel beams. The modified, extended end-plate connections were fabricated by straight through bolt for square columns and split bolt for the circular column with a curved endplate. Half-scale CFST composite moment resisting frames were tested under displacement-controlled quasi-static lateral cyclic load. Circular CFST columns possess better confinement than square CFST columns, but the application in construction is restricted due to the difficulty in joining with the steel beams. The present study investigates the strength, stiffness degradation, ductility, failure mode, and energy dissipation characteristics corresponding to the inter-story drift. The results from the tests indicate that the seismic resistance is at par with the American Institute of Steel Construction (AISC) seismic recommendations for composite special moment-resisting frame, and hence the split-bolt assembly can be used as an effective alternate for connection in circular columns. This work also tries to impart the experimental database on the effect of increasing the number of the bay in the resisting direction. Single-bay and double-bay frames were compared to quantify the improvement in seismic performance.
Hysteresis performance of through bolted connections in CFST frame
https://orcid.org/http://orcid.org/0000-0002-9943-8461
https://orcid.org/http://orcid.org/0000-0002-3167-6287
https://orcid.org/http://orcid.org/0000-0001-5705-9634
This paper presents an experimental study on the seismic performance of composite structural frame systems consisting of concrete-filled steel tubes (CFSTs) and steel beams. The modified, extended end-plate connections were fabricated by straight through bolt for square columns and split bolt for the circular column with a curved endplate. Half-scale CFST composite moment resisting frames were tested under displacement-controlled quasi-static lateral cyclic load. Circular CFST columns possess better confinement than square CFST columns, but the application in construction is restricted due to the difficulty in joining with the steel beams. The present study investigates the strength, stiffness degradation, ductility, failure mode, and energy dissipation characteristics corresponding to the inter-story drift. The results from the tests indicate that the seismic resistance is at par with the American Institute of Steel Construction (AISC) seismic recommendations for composite special moment-resisting frame, and hence the split-bolt assembly can be used as an effective alternate for connection in circular columns. This work also tries to impart the experimental database on the effect of increasing the number of the bay in the resisting direction. Single-bay and double-bay frames were compared to quantify the improvement in seismic performance.
Hysteresis performance of through bolted connections in CFST frame
https://orcid.org/http://orcid.org/0000-0002-9943-8461
https://orcid.org/http://orcid.org/0000-0002-3167-6287
https://orcid.org/http://orcid.org/0000-0001-5705-9634
This paper presents an experimental study on the seismic performance of composite structural frame systems consisting of concrete-filled steel tubes (CFSTs) and steel beams. The modified, extended end-plate connections were fabricated by straight through bolt for square columns and split bolt for the circular column with a curved endplate. Half-scale CFST composite moment resisting frames were tested under displacement-controlled quasi-static lateral cyclic load. Circular CFST columns possess better confinement than square CFST columns, but the application in construction is restricted due to the difficulty in joining with the steel beams. The present study investigates the strength, stiffness degradation, ductility, failure mode, and energy dissipation characteristics corresponding to the inter-story drift. The results from the tests indicate that the seismic resistance is at par with the American Institute of Steel Construction (AISC) seismic recommendations for composite special moment-resisting frame, and hence the split-bolt assembly can be used as an effective alternate for connection in circular columns. This work also tries to impart the experimental database on the effect of increasing the number of the bay in the resisting direction. Single-bay and double-bay frames were compared to quantify the improvement in seismic performance.
Hysteresis performance of through bolted connections in CFST frame
Asian J Civ Eng
Beena, K. P. (author) / Ajith, M. S. (author) / Sheela, S. (author)
Asian Journal of Civil Engineering ; 21 ; 1369-1388
2020-12-01
20 pages
Article (Journal)
Electronic Resource
English
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