Investigation on shear strain of reinforced concrete membrane panels subjected to pure shear

Abstract

Hsu recently conducted a shear test on nine reinforced concrete panel elements subjected to applying pure shear using a shear testing device. Modern truss models (i.e. modified compression field theory and a rotating angle softened truss model) are used to perform a complex nonlinear analysis through a trial and error method based on a double loop. This analysis is conducted by employing equilibrium conditions, compatibility conditions, and a ductile stress-strain relationship of a reinforced concrete membrane panel in a biaxial state. In this study, an effective algorithm that uses a revised Mohr compatibility method based on the failure criteria of struts and ties is proposed. This algorithm is used to improve the convergence rate in the analysis of shear history, which was performed in the experiment of Hsu. The result of the analysis indicates that the shear strain energy in a state of extended shear strain is influenced by the relationship between principal compressive stress and strain (crushing failure).

Reliability assessment of the behavior of reinforced and/or prestressed concrete beams sections in shear failure

“…The refined model equations are reformulated using an optimization algorithm and an appropriate stress-strain relationship for tensile concrete is implemented. On the other hand, in the works (Bernardo et al [23], Silva [24]), the contribution of tensile stresses in concrete has been neglected in the efficient RA-STM procedure. Through their comparison, it was shown only a good agreement for ultimate stage, namely for resistance, which is not the case for low loading stages.…”