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http://dx.doi.org/10.12652/Ksce.2012.32.3A.149

Lateral-Torsional Buckling Strength of I-girder with Corrugated Steel Webs under Linear Moment Gradient  

Moon, Jiho (Univ. of Washington 토목환경공학과)
Lim, Nam-Hyoung (충남대학교 토목공학과)
Lee, Hak-Eun (고려대학교 건축사회환경공학과)
Publication Information
KSCE Journal of Civil and Environmental Engineering Research / v.32, no.3A, 2012 , pp. 149-160 More about this Journal
Abstract
Corrugated steel plates have several advantages such as high resistance for shear without stiffeners, minimization of welding process, and high fatigue resistance. To take advantage of these benefits, several researchers have attempted to use corrugated steel plate as a web of I-girders. The lateral-torsional buckling is the major design aspect of such I-girders. However, lateral-torsional buckling of the I-girder with corrugated steel webs still needs to be investigated especially for a real loading condition such as non-uniform bending. This paper investigated the lateral-torsional buckling strength of the I-girder with corrugated steel webs under linear moment gradient by using finite element analysis. From the results, it was found that the buckling behavior of the I-girder with corrugated steel webs differed depending on the number of periods of the corrugation. Also, a simple equation for the moment gradient correction factor of the I-girder with corrugated steel webs was suggested. The inelastic lateral-torsional buckling strength of the I-girder with corrugated steel webs was then discussed based on current design equations for ordinary I-girders and the results of finite element analysis.
Keywords
corrugated steel webs; I-girder; lateral-torsional buckling; moment gradient correction factor;
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Times Cited By KSCI : 1  (Citation Analysis)
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