Title: A Shear Hinge Model for Analysis of Reinforced Concrete Beams

Author(s): Amir Reza Tabkhi Wayghan and Vahid Sadeghian

Publication: Structural Journal

Volume: 118

Issue: 6

Appears on pages(s): 279-290

Keywords: lumped plasticity; nonlinear analysis; reinforced concrete (RC) beams; shear behavior

DOI: 10.14359/51733001

Date: 11/1/2021

Abstract:
The lumped plasticity method is an efficient analytical approach to assess the system-level performance of reinforced concrete (RC) structures. Through this analysis approach, the nonlinearity effects are calculated using plastic hinges located in critical parts of the structure. Because of the complexity associated with shear-related mechanisms in RC members, the number of shear hinge models developed in the literature are limited. This paper presents a comprehensive shear hinge model for RC beams capable of capturing advanced mechanisms such as interactions between shear force and bending moment, effects of nonlinear stress and strain distributions through the section, and compression softening effect in concrete. The model provides closed-form equations for five key points on the shear force-shear deformation response by satisfying the compatibility, equilibrium, and constitutive relationships. By comparing the performance of the model against test results, other analysis methods, and design codes at the component and system level, the effectiveness of the model in capturing the shear behavior is demonstrated.