Abstract
In the design of railway bridge crossing over road or river, the height of bridge from the lowest portion to the railway level is sometimes restricted by the height of the road or the high-water-level of the river. In order to satisfy these conditions, the authors propose an application of Steel-Reinforced-Concrete (SRC) slab structures to floor system in through-truss bridges. Since the behaviors of this type of bridges have not been clarified, pull-load and dry-shrinkage experiments of concrete slab structure are conducted in this study. These experiments demonstrate the location of cracks in the slab concrete, their developing patterns, and the axial assignment-force of lower chord member.
