Literature review on size effect of shear reinforced concrete beams

Abstract

The development of large-scale reinforced concrete (RC) structures, such as high-rise skyscrapers, long-span bridges, and nuclear power plants, has grown dramatically in recent decades. The cross -sections of members expand when the constructions become taller and larger in scale. These massive components necessitate an excessive amount of concrete and steel reinforcement, resulting in a hefty self-weight and costly structure. Many investigators have been interested in find ing ways to better employ high-strength materials in order to minimize excessive use of build ing materials and have performed numerous research studies. Since the shear strength pred iction of RC members without transverse reinforcement is an essential criterion in the design of concrete beams and frames. Besides that, many concrete structural members which inc lud ing slabs, walls, and foundations do not use stirrups, so a better understand ing of the shear strength of RC members without transvers e reinforcement is also considered necessary in these cases. However, even with sophisticated analytical tools, accurate prediction of the shear behavior of RC members continues to be a significant task. Because of the complexity of the shear transmission mechanism in RC and the absence of appropriate models for the many activities that can contribute to shear transfer, so it is important to investigate the impact of size on the shear behavior of RC structural elements.