Effective Flange Width for Composite Steel Beams
The effective flange width is a concept proposed by various codes to simplify the computation of stress distribution across the width of composite beams. Questions have been raised as to the validity of the effective slab width provisions, since they have a direct effect on the computed ultimate mom...
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Sultan Qaboos University
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doaj-f39f8ef12ee2474eafc889ea7d2560732020-11-25T02:55:06ZengSultan Qaboos UniversityThe Journal of Engineering Research1726-60091726-67422011-06-0181284310.24200/tjer.vol8iss1pp28-4390Effective Flange Width for Composite Steel BeamsT. Salama0H.H. Nassif1Civil, Construction and Environmental Engineering Department, University of Alabama at Birmingham, 1075 13th St. S., Birmingham, AL 35294-4440, USACivil and Environmental Engineering Department, Rutgers, The State University of New Jersey, 98 Brett Rd., 131 A-Wing, SOE Building, Piscataway, NJ 08854-8014, USAThe effective flange width is a concept proposed by various codes to simplify the computation of stress distribution across the width of composite beams. Questions have been raised as to the validity of the effective slab width provisions, since they have a direct effect on the computed ultimate moment as well as serviceability limit states such as deflection, fatigue, and overloading. The objective of this paper is to present results from an experimental and analytical investigation to determine the effective slab width in steel composite beams. The Finite Element Method (FEM) was employed for the analysis of composite steel-concrete beams having variable concrete flange widths. Results were compared to those from tests performed on eight beams loaded to failure. Beam test specimens had variable flange width and various degrees of composite action (shear connectors). The comparison presented in terms of the applied load versus deflection, and strain in the concrete slab show that the AISC-LRFD code is conservative and underestimates the width active. Based on a detailed parametric study an equation for the calculation of the effective flange width is recommended.https://journals.squ.edu.om/index.php/tjer/article/view/90composite steel beamseffective flange widthfinite element analysis. |
collection |
DOAJ |
language |
English |
format |
Article |
sources |
DOAJ |
author |
T. Salama H.H. Nassif |
spellingShingle |
T. Salama H.H. Nassif Effective Flange Width for Composite Steel Beams The Journal of Engineering Research composite steel beams effective flange width finite element analysis. |
author_facet |
T. Salama H.H. Nassif |
author_sort |
T. Salama |
title |
Effective Flange Width for Composite Steel Beams |
title_short |
Effective Flange Width for Composite Steel Beams |
title_full |
Effective Flange Width for Composite Steel Beams |
title_fullStr |
Effective Flange Width for Composite Steel Beams |
title_full_unstemmed |
Effective Flange Width for Composite Steel Beams |
title_sort |
effective flange width for composite steel beams |
publisher |
Sultan Qaboos University |
series |
The Journal of Engineering Research |
issn |
1726-6009 1726-6742 |
publishDate |
2011-06-01 |
description |
The effective flange width is a concept proposed by various codes to simplify the computation of stress distribution across the width of composite beams. Questions have been raised as to the validity of the effective slab width provisions, since they have a direct effect on the computed ultimate moment as well as serviceability limit states such as deflection, fatigue, and overloading. The objective of this paper is to present results from an experimental and analytical investigation to determine the effective slab width in steel composite beams. The Finite Element Method (FEM) was employed for the analysis of composite steel-concrete beams having variable concrete flange widths. Results were compared to those from tests performed on eight beams loaded to failure. Beam test specimens had variable flange width and various degrees of composite action (shear connectors). The comparison presented in terms of the applied load versus deflection, and strain in the concrete slab show that the AISC-LRFD code is conservative and underestimates the width active. Based on a detailed parametric study an equation for the calculation of the effective flange width is recommended. |
topic |
composite steel beams effective flange width finite element analysis. |
url |
https://journals.squ.edu.om/index.php/tjer/article/view/90 |
work_keys_str_mv |
AT tsalama effectiveflangewidthforcompositesteelbeams AT hhnassif effectiveflangewidthforcompositesteelbeams |
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