Abstract
Composite bridge girder with concrete slabs and corrugated steel webs is a prospective form because of such advantage as the lightness of the girder. However the behavior of this type of girder around middle support, where severe and complicated stress field may be formed in many cases of continuous girder, has not been fully investigated as yet. The authors conducted several experiments and finite element analyses in order to study the ultimate flexural and shear behavior of this type of composite girder around middle support. The results indicated that the girder could provide significantly higher flexural and shear strength than assumed in conventional design, due to mutual aid of concrete slabs and steel webs. It was also found that the behavior of the girder after cracking of the slab can be suitably predicted by the employed finite element analysis up to the buckling of the web.
