HVFA-SCC represents a recent technological advancement in the concrete field, providing a more environmentally friendly alternative. This paper aims to numerically simulate the behavior of reinforced HVFA-SCC beams under shear using the Atena 3D Engineering software, with validation through experimental data. The concrete mixture in this study included fly ash as a replacement for 50% of the total binder weight. Three experimental reinforced HVFA-SCC beams were constructed in the laboratory, with dimensions of 170 cm in length, 15 cm in height, and 10 cm in width. Flexural reinforcement 2D16 was placed in the tension zone below the beam. After 28 days, the beams were subjected to shear testing using a four-point loading system. The numerical modeling results closely matched those of the experimental tests, indicating the potential for this modeling approach to predict the shear capacity of HVFA-SCC 50% beams under varying influences.