ARCH EFFECT FOR FATIGUE DURABILITY OF COMPOSITE DECK

Abstract

The paper is focused on composite deck with curved concrete and steel-plate forms. By the permanent curved forms, arch action can be expected during concrete casting and for live loads after concrete hardening. Fatigue tests using a wheel running machine were carried out to certify the fatigue durability of the composite decks. Also, the arch action and the composite effect between the concrete and these forms were made clear through specimens different in the shape and the structural type. The with the experimental results and analyses, the author derived formulae to predict the punching shear capacities for these arch shape decks by considering the arch action, eccentric loading and composite effect. Finally, the degrees of improvement on the fatigue durability of these arch-shape composite decks were verified.