| Title |
Lateral-Torsional Buckling Strength of I-girder with Corrugated Steel Webs under Linear Moment Gradient |
| Authors |
문지호(Moon, Jiho) ; 임남형(Lim, Nam-Hyoung) ; 이학은(Lee, Hak-Eun) |
| DOI |
https://doi.org/10.12652/Ksce.2012.32.3A.149 |
| Keywords |
파형강판;I-거더;횡-비틂 좌굴;모멘트 구배 수정 계수 corrugated steel webs;I-girder;lateral-torsional buckling;moment gradient correction factor |
| 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. |