Lateral–torsional buckling of I-girder with corrugated webs under uniform bending.pdf

ARTICLE IN PRESS Thin-Walled Structures 47 (2009) 21– 30 Contents lists available at ScienceDirect Thin-Walled Structures journal homepage: /locate/tws Lateral– torsional buckling of I-girder with corrugated webs under uniform bending Jiho Moon a, Jong-Won Yi b, Byung H. Choi c, Hak-Eun Lee a, a Civil, Environmental and Architectural Engineering, Korea University, 5-1 Anam-dong, Sungbuk-gu, Seoul 136-701, South Korea b Hyundai Institute of Construction Technology, Mabuk-dong, Giheung-gu, Yongin-si, Gyounggi-do 446-716, South Korea c Steel Structure Research Laboratory, RIST, Yeongcheon, Dontan, Hwaseong, Gyeongi-Do 79-5, South Korea a r t i c l e i n f o a b s t r a c t Article history: This paper presents the results of the theoretical and finite element analyses of the lateral–torsional Received 16 August 2007 buckling of I-girders with corrugated webs under uniform bending. Even though lateral–torsional Received in revised form buckling could dominate the flexural strength of I-girders composed of thin-walled members, the 8 April 2008 torsional rigidity of the I-girder with corrugated webs is not yet sufficiently understood, for example, Accepted 9 April 2008 the method to evaluate the warping constant. In this paper, previous studies on the bending and Available online 5 June 2008 torsional rigidities of the I-girder with corrugated webs are first discussed. Then, app