| 要旨 |
The internal arching action in slabs of girder bridges due to external confinement is generally recognized. A steel free deck slab system, that eliminates the need for tensile reinforcement for shorter spans, is still in its conceptual stages. This paper presents the results of static tests from two scaled laboratory models. The main model was designed considering the phenomena of enhanced load carrying capacity due to external straps and internal tensile reinforcement. The second model represented only the former aspect. Both slabs that were tested failed in punching shear, and the first specimen exhibited a significant enhancement in ultimate load carrying capacity and higher efficiency in crack control. |