Simulation of reinforced concrete short shear wall subjected to cyclic loading

• Prediction of the capacity of squat shear wall using tests and analysis.
• Modification of model of concrete in the softening part.
• Pushover analysis using softened truss theory and FE analysis is performed.
• Modified concrete model gives reasonable accurate peak load and displacement.
• The ductility, ultimate load and also crack pattern can be accurately predicted.

This paper addresses the strength and deformation capacity of stiff squat shear wall subjected to monotonic and pseudo-static cyclic loading using experiments and analysis. Reinforced concrete squat shear walls offer great potential for lateral load resistance and the failure mode of these shear walls is brittle shear mode. Shear strength of these shear walls depend strongly on softening of concrete struts in principal compression direction due to principal tension in other direction. In this work simulation of the behavior of a squat shear wall is accurately predicted by finite element modeling by incorporating the appropriate softening model in the program. Modification of model of concrete in the softening part is suggested and reduction factor given by Vecchio et al. (1994) is used in the model. The accuracy of modeling is confirmed by comparing the simulated response with experimental one. The crack pattern generated from the 3D model is compared with that obtained from experiments. The load deflection for monotonic loads is also obtained using softened truss theory and compared with experimental one.