Redistribution of moments in prestressed concrete continuous beams

Twenty-seven three-span and twelve two-span beams, all of rectangular cross-section, were tested to destruction under various arrangements of concentrated loads. The results of these tests are presented. Redistribution of moments was practically complete in the majority of the beams. The curvature distributions along the plastic lengths have been studied and the rotations deduced therefrom are compared with those obtained on the basis of the standard moment-curvature relationship proposed by Guyon.