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Publicações
Gordo, J.M. e Guedes Soares, C. (2015), “Experimental Evaluation of the Ultimate Bending Moment of a Slender Thin-Walled Box Girder”, Journal of Offshore Mechanics and Arctic Engineering, Vol. 137, pp. 021604-1 - 021604-7
The results of a four points bending test on a box girder are presented. The experiment is part of series of tests with similar configuration but different thickness and span between frames. The present work refers to the slenderest plate box girder with a plate’s thickness of 2 mm but with a short span between frames. The experiment includes initial loading cycles allowing for residual stresses relief. The moment curvature relationship is established for a large range of curvature. The ultimate bending moment of the box is evaluated and compared with the first yield moment and the plastic moment allowing the evaluation of the efficiency of the structure. The post buckling behavior and collapse mode are characterized. Comparison of the experiment with a progressive collapse method is made taking into consideration the effect of residual stresses on envelop of the moment curvature curve of the structure.
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