Deformability of reinforced concrete beams under the action of repeated alternating loads
Oleksandr Korniychuck, Grigoriy Masiuk, Sviatoslav Homon, Ivan Aleksiievets, Oleksandr Chapiuk, Diana Kaynts, Vasyl Rizak
Abstract
A technique has been developed, and experimental studies of reinforced concrete beams under repeated alternating loads at different shear spans have been carried out. It has been established that the shear span significantly affects the deformation behaviour in the oblique and normal sections. It was found that with smaller shear spans, the deformations of transverse reinforcement and concrete in oblique sections develop much more intensively and have greater values for the deformation of longitudinal reinforcement and concrete in normal sections. The residual strain appears in the first cycles of overload and decays uniformly in subsequent cycles due to decreased plastic deformations in materials.