Behavior of reinforced concrete. members prone to shear deformations: Part I - Effect of confinement

Confinement due to transverse reinforcement is acknowledged to have a positive influence on enhancing the overall performance of reinforced concrete (RC) members in terms of strength and deformability. Significant research in the literature has concentrated on the effect of confinement in RC members subjected to flexural or combined flexural/ axial forces. Relatively little has been done to evaluate the effects of confinement on shear-dominated RC members. A new analytical model under the context of the Modified Compression Field Theory (MCFT) is developed to incorporate the beneficial effect of confinement due to transverse reinforcement. Results from the analytical investigation show good correlation with available experimental results on RC bent caps, where shear deformations were considered the dominant action. In addition, the confinement provided by the out-of-plane horizontal legs of the transverse reinforcement has a significant effect on the strength and deformability on shear-dominated RC members. Copyright 2006, American Concrete Institute. All rights reserved.

Behavior of reinforced concrete. members prone to shear deformations: Part I - Effect of confinement Academic Article