Energy dissipation of graded concrete beams on maximum reinforcement ratio

Abstract

Energy dissipation is a parameter that contributes to the deformation process of structural elements. Factors affecting the value of energy dissipation include concrete compressive strength, reinforcement ratio, cross-sectional dimensions, and history of loading that occurs on the structure. In this study, the graded concrete (GC) beams with a maximum reinforcement design was tested under flexural test to analyse the resulting energy dissipation. The resulting data was then compared to the reference beams. The results showed that: 1) The use of cross-sectional dimension ratio of ½ in GC beams using maximum reinforcement can increase the energy dissipation by more than 2000%; 2) Design of reinforcement area should be based on the higher concrete strength to increase energy dissipation up to 100%; 3) The use of GC save on construction costs can increase energy dissipation by up to 400% with a reduction in load capacity of 25%; 4) The use of GC to improve the properties of structural elements can increase energy dissipation by more than 60% while increasing load performance by almost 50%.

A Study on the Influence of Longitudinal Reinforcement on Energy Dissipation Capacity of Rc Beams

“…When reinforced with b > 0.4, all beams have insufficient displacement ductility (less than 3). Clotilde Chambreuil et al [20]Looking into damping formulas there are two scales used to characterize energy dissipation: global and local. Local scale phenomena like concrete damage, friction, unilateral effects, or plasticity are expressed by material behaviour laws.…”