Title of article
ANALYTICAL STUDY OF STEEL I-BEAM WITH STEPPED FLANGES
Author/Authors
Morkhade, S. G Department of Civil Engineering - Vidya Pratishthan’s Kamalnayan Bajaj Institute of Engineering and Technology - Baramati - Pune - Maharashtra, India , Kumthekar, F. P Department of Civil Engineering - Vidya Pratishthan’s Kamalnayan Bajaj Institute of Engineering and Technology - Baramati - Pune - Maharashtra, India , Nayak, C. B Department of Civil Engineering - Vidya Pratishthan’s Kamalnayan Bajaj Institute of Engineering and Technology - Baramati - Pune - Maharashtra, India
Pages
13
From page
217
To page
229
Abstract
This paper presents a parametric study of steel I- beam with stepped flanges by using finite
element analysis. Stepped flange beam is used in structures to decrease the negative bending
moments near interior supports that causes failure due to buckling. Steps in the cross section
can be achieved by adding cover plates to the beam flanges, changing the size of the hot
rolled section, or changing the flange thickness and/or width for built-up section. The stress
concentration with variation in stepped beam configuration such as doubly and singly
stepped I-beams has been examined thoroughly. The loadings are limited to those having an
inflection point of zero under point load at mid span. Beams with degree of symmetry, ρ of
0.2 are investigated for the present study. Unbraced length to height ratio of the beam to be
analyzed is considered as 15. In addition, to check the effect of steps, stepped parameters α,
β and γ are varied. The results shows that, a change of flange thickness is more significant
than a change of flange width on the lateral torsional buckling capacity of a singly stepped
beam.
Keywords
Parametric Study , Stepped I-Beam , Stepped Parameters , Negative Bending Moment , Non Linear Buckling
Serial Year
2020
Record number
2492561
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