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Effect of detailing on performance of steel T-connection under fire loading

Effect of detailing on performance of steel T-connection under fire loading In this study, the geometrical parameters of T-connection are assessed under fire loading. In the following, ST37 material has been used in the modeling procedure of T-connection. Meanwhile, fire loading is conducted according to the Eurocode standard and the temperature–time curve is applied based on the ISO 834 standard. In this research, nine prototypes of T-connection are modeled in ABAQUS software by considering the geometrical parameters such as the diameter and number of bolts, length, and thickness of T-connection. By comparing the results of nine models, the higher amounts of stress are seen in the beam-to-column connections with increasing connection length. By changing each of the parameters, the failure modes are altered relative to the thickness of connections under fire loading. Although the number of bolts parameter is effective in order to reduce the displacement and ductility in the connections, and increasing the absorption capacity and the amount of stiffness and strength in higher temperatures. The obtained results showed that by increasing the bolt diameter of the COL.M16-N4-TST15 and COL.M20-N4-TST15 samples, the displacement value is reduced 10% and 14%, respectively, compared to the reference sample. Also, by enhancing the bolt number of the COL.M22-N4-TST15 and COL.M12-N8-TST15 samples, the displacement value is decreased 17% and 30%, respectively, in comparison with the reference sample. Meanwhile, when the T-connection thickness of COL.M20-N4-TST20 and COL.M20-N4-TST25 samples is increased, the displacement value is decreased by 19% and 22%, respectively, compared to the reference sample. http://www.deepdyve.com/assets/images/DeepDyve-Logo-lg.png Journal of Building Pathology and Rehabilitation Springer Journals

Effect of detailing on performance of steel T-connection under fire loading

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References (23)

Publisher
Springer Journals
Copyright
Copyright © The Author(s), under exclusive licence to Springer Nature Switzerland AG 2021
ISSN
2365-3159
eISSN
2365-3167
DOI
10.1007/s41024-021-00147-w
Publisher site
See Article on Publisher Site

Abstract

In this study, the geometrical parameters of T-connection are assessed under fire loading. In the following, ST37 material has been used in the modeling procedure of T-connection. Meanwhile, fire loading is conducted according to the Eurocode standard and the temperature–time curve is applied based on the ISO 834 standard. In this research, nine prototypes of T-connection are modeled in ABAQUS software by considering the geometrical parameters such as the diameter and number of bolts, length, and thickness of T-connection. By comparing the results of nine models, the higher amounts of stress are seen in the beam-to-column connections with increasing connection length. By changing each of the parameters, the failure modes are altered relative to the thickness of connections under fire loading. Although the number of bolts parameter is effective in order to reduce the displacement and ductility in the connections, and increasing the absorption capacity and the amount of stiffness and strength in higher temperatures. The obtained results showed that by increasing the bolt diameter of the COL.M16-N4-TST15 and COL.M20-N4-TST15 samples, the displacement value is reduced 10% and 14%, respectively, compared to the reference sample. Also, by enhancing the bolt number of the COL.M22-N4-TST15 and COL.M12-N8-TST15 samples, the displacement value is decreased 17% and 30%, respectively, in comparison with the reference sample. Meanwhile, when the T-connection thickness of COL.M20-N4-TST20 and COL.M20-N4-TST25 samples is increased, the displacement value is decreased by 19% and 22%, respectively, compared to the reference sample.

Journal

Journal of Building Pathology and RehabilitationSpringer Journals

Published: Dec 1, 2022

Keywords: Geometrical parameters; T-connection; Failure mode; Fire loading; Steel Connection; Finite Element

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