ABSTRACT

This paper continues on previous research concerning the buckling resistance of curved bridge girder panels. It has been shown (Van Bogaert 2012) that in spite of the more shell-like behaviour, the curvature of bridge girder webs may increase the buckling resistance. This has been found through a model of a closed-section bridge girder in which the web curvature is increased gradually until the cross-section is close to a circle. During this previous research, nonlinear material and geometric response as well as the influence of critical imperfections of variable amplitude have been considered. However, residual stresses have not been included and the type of loading of the numerical models was mainly bending. This paper further develops the research in case shear is the main type of loading.