NONLINEAR BEHAVIOR ANALYSIS OF STEEL BEAMS WITH FLAT OR CORRUGATED WEBS AT ELEVATED TEMPERATURES | ||
| JES. Journal of Engineering Sciences | ||
| Article 8, Volume 36, No 3, May and June 2008, Pages 657-673 PDF (810.63 K) | ||
| Document Type: Research Paper | ||
| DOI: 10.21608/jesaun.2008.116158 | ||
| Author | ||
| Ahmed S. Elamary | ||
| Structural Department, Faculty of Engineering, Al-azhar University Kena-Egypt | ||
| Abstract | ||
| At the present the corrugated web beams and the fire action in steel beams are important aspects of structural behavior and are receiving considerable attention from researchers. This paper presents the results of a numerical study, using ANSYS, of the large deflection behavior of steel beams at elevated temperatures with different web shapes; corrugated or flat. A particular emphasis of this paper is to investigate the behavior of steel beams with corrugated web and compare this behavior with flat web beam. After validating the capability of ANASYS against available experimental results of fire tests on restrained steel beams, this paper describes the results of a numerical parametric study. The parameters investigated include beam span, different web shapes (Corrugated/Flat), uniform and non-uniform temperature distributions, different levels of applied load, and effect of lateral torsional buckling. It is concluded that, flat web beams can resist higher than the corrugated web beams at higher level of temperatures. The lateral torsional buckling is the most important factor which should be considered in the design process of the steel beams by checking the beam resistance bending moment capacity in fire. Beams without lateral restrains, affected significantly by the compactness of the web and the flange for the flat and the corrugated web beams respectively. The flange out of plane deflection of the corrugated web beams ( flange transverse bending) is required to be considered in the fire design process. | ||
| Keywords | ||
| Fire resistance; Corrugated Web; Lateral torsional buckling; Steel beams; and Elevated temperatures | ||
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