Abstract
Corrugated steel plates are used to web plates of a composite prestressed concrete bridge. This paper presents measured residual stress distributions of corrugated steel plates and the results are compared with the case of flat steel plate. Each 6 specimens are fabricated for web plates without flange and with flanges. The corrugated shape was made trapezoidal and the combination of wave height and panel width in the cross-section were changed. From the measured results, the residual stress distributions of the corrugated web section without welding flange is not a uniform distribution due to the influence of press braking, but the residual stress varies within 10% of the yield stress. On the other hand, the residual stress distribution of the web section with welded flanges is rapidly changing in the range of about 20% of web height from the edges, there is a uniform tensile stress of about 2% of the yield stress in the internal web. As the corrugated steel plate had an accordion effect, the residual stress distribution in member axis direction differences in comparison with the case of the flat steel plate.
