2019 Volume 75 Issue 4 Pages 279-292
This research aims to propose an evaluation method of shear capacity for RC T-beams that takes into account the compression flange. The static bending tests and numerical analyses by 3D non-linear FEM were conducted for RC beams with the various width and height of compression flange, shear span ratio, and shear reinforcement ratio. The experimental and numerical results show that the compression flange of RC T-beams with shear reinforcement resists the progress of the diagonal cracks and contributes the shear resistance. The shear capacities of RC T-beams increase with the increase in the width and height of the compression flange. On the other hand, the shear capacity carried by shear reinforcement is not affected by the compression flange. Finally, this study proposes a new equation for the shear capacity carried by the compression flange.