Flexural Strength of Internally Stiffened Tubular Steel Beam Filled with Recycled Concrete Materials

The flexural strength of Slender steel tube sections is known to achieve significant improvements upon being filled with concrete material; however, this section is more likely to fail due to buckling under compression stresses. This study investigates the flexural behavior of a Slender steel tube b...

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Autores principales:	Ahmed W. Al Zand, Mustafa M. Ali, Riyadh Al-Ameri, Wan Hamidon Wan Badaruzzaman, Wadhah M. Tawfeeq, Emad Hosseinpour, Zaher Mundher Yaseen
Formato:	article
Lenguaje:	EN
Publicado:	MDPI AG 2021
Materias:	stiffened CFST beam recycled concrete finite element flexural strength cold-formed tube Technology T Electrical engineering. Electronics. Nuclear engineering TK1-9971 Engineering (General). Civil engineering (General) TA1-2040 Microscopy QH201-278.5 Descriptive and experimental mechanics QC120-168.85
Acceso en línea:	https://doaj.org/article/e7da5dc36e444ef58ba048ad55fcbb09
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spelling	oai:doaj.org-article:e7da5dc36e444ef58ba048ad55fcbb092021-11-11T17:54:19ZFlexural Strength of Internally Stiffened Tubular Steel Beam Filled with Recycled Concrete Materials10.3390/ma142163341996-1944https://doaj.org/article/e7da5dc36e444ef58ba048ad55fcbb092021-10-01T00:00:00Zhttps://www.mdpi.com/1996-1944/14/21/6334https://doaj.org/toc/1996-1944The flexural strength of Slender steel tube sections is known to achieve significant improvements upon being filled with concrete material; however, this section is more likely to fail due to buckling under compression stresses. This study investigates the flexural behavior of a Slender steel tube beam that was produced by connecting two pieces of C-sections and was filled with recycled-aggregate concrete materials (CFST beam). The C-section’s lips behaved as internal stiffeners for the CFST beam’s cross-section. A static flexural test was conducted on five large scale specimens, including one specimen that was tested without concrete material (hollow specimen). The ABAQUS software was also employed for the simulation and non-linear analysis of an additional 20 CFST models in order to further investigate the effects of varied parameters that were not tested experimentally. The numerical model was able to adequately verify the flexural behavior and failure mode of the corresponding tested specimen, with an overestimation of the flexural strength capacity of about 3.1%. Generally, the study confirmed the validity of using the tubular C-sections in the CFST beam concept, and their lips (internal stiffeners) led to significant improvements in the flexural strength, stiffness, and energy absorption index. Moreover, a new analytical method was developed to specifically predict the bending (flexural) strength capacity of the internally stiffened CFST beams with steel stiffeners, which was well-aligned with the results derived from the current investigation and with those obtained by others.Ahmed W. Al ZandMustafa M. AliRiyadh Al-AmeriWan Hamidon Wan BadaruzzamanWadhah M. TawfeeqEmad HosseinpourZaher Mundher YaseenMDPI AGarticlestiffened CFST beamrecycled concretefinite elementflexural strengthcold-formed tubeTechnologyTElectrical engineering. Electronics. Nuclear engineeringTK1-9971Engineering (General). Civil engineering (General)TA1-2040MicroscopyQH201-278.5Descriptive and experimental mechanicsQC120-168.85ENMaterials, Vol 14, Iss 6334, p 6334 (2021)
institution	DOAJ
collection	DOAJ
language	EN
topic	stiffened CFST beam recycled concrete finite element flexural strength cold-formed tube Technology T Electrical engineering. Electronics. Nuclear engineering TK1-9971 Engineering (General). Civil engineering (General) TA1-2040 Microscopy QH201-278.5 Descriptive and experimental mechanics QC120-168.85
spellingShingle	stiffened CFST beam recycled concrete finite element flexural strength cold-formed tube Technology T Electrical engineering. Electronics. Nuclear engineering TK1-9971 Engineering (General). Civil engineering (General) TA1-2040 Microscopy QH201-278.5 Descriptive and experimental mechanics QC120-168.85 Ahmed W. Al Zand Mustafa M. Ali Riyadh Al-Ameri Wan Hamidon Wan Badaruzzaman Wadhah M. Tawfeeq Emad Hosseinpour Zaher Mundher Yaseen Flexural Strength of Internally Stiffened Tubular Steel Beam Filled with Recycled Concrete Materials
description	The flexural strength of Slender steel tube sections is known to achieve significant improvements upon being filled with concrete material; however, this section is more likely to fail due to buckling under compression stresses. This study investigates the flexural behavior of a Slender steel tube beam that was produced by connecting two pieces of C-sections and was filled with recycled-aggregate concrete materials (CFST beam). The C-section’s lips behaved as internal stiffeners for the CFST beam’s cross-section. A static flexural test was conducted on five large scale specimens, including one specimen that was tested without concrete material (hollow specimen). The ABAQUS software was also employed for the simulation and non-linear analysis of an additional 20 CFST models in order to further investigate the effects of varied parameters that were not tested experimentally. The numerical model was able to adequately verify the flexural behavior and failure mode of the corresponding tested specimen, with an overestimation of the flexural strength capacity of about 3.1%. Generally, the study confirmed the validity of using the tubular C-sections in the CFST beam concept, and their lips (internal stiffeners) led to significant improvements in the flexural strength, stiffness, and energy absorption index. Moreover, a new analytical method was developed to specifically predict the bending (flexural) strength capacity of the internally stiffened CFST beams with steel stiffeners, which was well-aligned with the results derived from the current investigation and with those obtained by others.
format	article
author	Ahmed W. Al Zand Mustafa M. Ali Riyadh Al-Ameri Wan Hamidon Wan Badaruzzaman Wadhah M. Tawfeeq Emad Hosseinpour Zaher Mundher Yaseen
author_facet	Ahmed W. Al Zand Mustafa M. Ali Riyadh Al-Ameri Wan Hamidon Wan Badaruzzaman Wadhah M. Tawfeeq Emad Hosseinpour Zaher Mundher Yaseen
author_sort	Ahmed W. Al Zand
title	Flexural Strength of Internally Stiffened Tubular Steel Beam Filled with Recycled Concrete Materials
title_short	Flexural Strength of Internally Stiffened Tubular Steel Beam Filled with Recycled Concrete Materials
title_full	Flexural Strength of Internally Stiffened Tubular Steel Beam Filled with Recycled Concrete Materials
title_fullStr	Flexural Strength of Internally Stiffened Tubular Steel Beam Filled with Recycled Concrete Materials
title_full_unstemmed	Flexural Strength of Internally Stiffened Tubular Steel Beam Filled with Recycled Concrete Materials
title_sort	flexural strength of internally stiffened tubular steel beam filled with recycled concrete materials
publisher	MDPI AG
publishDate	2021
url	https://doaj.org/article/e7da5dc36e444ef58ba048ad55fcbb09
work_keys_str_mv	AT ahmedwalzand flexuralstrengthofinternallystiffenedtubularsteelbeamfilledwithrecycledconcretematerials AT mustafamali flexuralstrengthofinternallystiffenedtubularsteelbeamfilledwithrecycledconcretematerials AT riyadhalameri flexuralstrengthofinternallystiffenedtubularsteelbeamfilledwithrecycledconcretematerials AT wanhamidonwanbadaruzzaman flexuralstrengthofinternallystiffenedtubularsteelbeamfilledwithrecycledconcretematerials AT wadhahmtawfeeq flexuralstrengthofinternallystiffenedtubularsteelbeamfilledwithrecycledconcretematerials AT emadhosseinpour flexuralstrengthofinternallystiffenedtubularsteelbeamfilledwithrecycledconcretematerials AT zahermundheryaseen flexuralstrengthofinternallystiffenedtubularsteelbeamfilledwithrecycledconcretematerials
_version_	1718432033037877248

Flexural Strength of Internally Stiffened Tubular Steel Beam Filled with Recycled Concrete Materials

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