Performance of axially restrained carbon and stainless steel perforated beams at elevated temperatures
Performance of axially restrained carbon and stainless steel perforated beams at elevated temperatures
This article compares the fire performance of axially restrained perforated carbon and austenitic stainless steel composite beams with circular and rectangular web openings. Finite element models, validated against experimental tests from the literature, were used to perform parametric analysis. The beams were analysed under various levels of load ratio and axial restraint stiffness covering the ranges which may exist in practice. It is concluded that austenitic stainless steel perforated beams show a more ductile fire response compared to carbon steel beams of similar geometry. It is shown that despite stainless steel’s higher thermal expansion, the beams exhibit lower thermal-induced peak compressive forces than carbon steel beams giving rise to lower levels of thermal-induced compressive force on the adjacent cold structures. The load ratio was found to determine the relative survivability of stainless steel and carbon steel beams, where at load ratios lower than 0.6, stainless steel beams show superior fire resistance than their carbon steel counterparts. The article also assesses the applicability and accuracy of the Steel Construction Institute method for the design of carbon and stainless steel perforated beams, and recommendations for future improvements are made.
Axial restraint, Carbon steel, Circular opening, Elevated temperature, Fire, Perforated beam, Rectangular opening, Stainless steel, Web opening
3564-3579
Shaheen, Mohamed
e7a4a38e-4c6c-41a6-96c1-fbaf6627ae3e
Afshan, Sheida
68dcdcac-c2aa-4c09-951c-da4992e72086
Foster, Andrew
f5235d3d-f231-4246-9781-0c4c51b9fcff
November 2021
Shaheen, Mohamed
e7a4a38e-4c6c-41a6-96c1-fbaf6627ae3e
Afshan, Sheida
68dcdcac-c2aa-4c09-951c-da4992e72086
Foster, Andrew
f5235d3d-f231-4246-9781-0c4c51b9fcff
Shaheen, Mohamed, Afshan, Sheida and Foster, Andrew
(2021)
Performance of axially restrained carbon and stainless steel perforated beams at elevated temperatures.
Advances in Structural Engineering, 24 (15), .
(doi:10.1177/13694332211033965).
Abstract
This article compares the fire performance of axially restrained perforated carbon and austenitic stainless steel composite beams with circular and rectangular web openings. Finite element models, validated against experimental tests from the literature, were used to perform parametric analysis. The beams were analysed under various levels of load ratio and axial restraint stiffness covering the ranges which may exist in practice. It is concluded that austenitic stainless steel perforated beams show a more ductile fire response compared to carbon steel beams of similar geometry. It is shown that despite stainless steel’s higher thermal expansion, the beams exhibit lower thermal-induced peak compressive forces than carbon steel beams giving rise to lower levels of thermal-induced compressive force on the adjacent cold structures. The load ratio was found to determine the relative survivability of stainless steel and carbon steel beams, where at load ratios lower than 0.6, stainless steel beams show superior fire resistance than their carbon steel counterparts. The article also assesses the applicability and accuracy of the Steel Construction Institute method for the design of carbon and stainless steel perforated beams, and recommendations for future improvements are made.
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Manuscript_author accepted version
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Accepted/In Press date: 23 June 2021
Published date: November 2021
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Publisher Copyright:
© The Author(s) 2021.
Keywords:
Axial restraint, Carbon steel, Circular opening, Elevated temperature, Fire, Perforated beam, Rectangular opening, Stainless steel, Web opening
Identifiers
Local EPrints ID: 450012
URI: http://eprints.soton.ac.uk/id/eprint/450012
ISSN: 1369-4332
PURE UUID: 1a222f8c-4c85-4ae6-a9b5-d5cccb6f59a4
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Date deposited: 05 Jul 2021 16:30
Last modified: 17 Mar 2024 03:56
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Author:
Mohamed Shaheen
Author:
Andrew Foster
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