A Coupled Behaviour of Web and Flange on Bending Buckling of the Web of Steel Box Girder

Abstract In general, a web of the steel box girder is designed as an independent. However, in actual behaviour, since and flange behave couple, considered to have higher bending buckling strength than standard due restraint by flanges. Therefore, horizontal stiffeners for might be omitted. this study, focusing on effect coupled behaviour girder, FE analyses were carried out model with different structural configuration panel under identical boundary conditions design. From these results, it was found that girders without top end flange. case parameters are smaller those critical parameters, influence slight.