Prestressed concrete box girders with corrugated steel webs are drawing much attention as a new type of composite bridge structures in Japan. One of the most remarkable structural characteristics of this construction is the separation of the structural functions among the component members. The concrete slabs resist the bending momentand the corrugated steel webs resist the vertical shearing force. In the present Japanese design codes, the comgated steel webs are designed based on this consideration. In this study, an analytical method to evaluate the distribution of shearing force between the corrugated steel web and the concrete flanges is proposed for a practical and economical design of the corrugated steel webs.
