Effects of Web Position on Shear Resistance Mechanism of Ultra High Strength Fiber Reinforced Concrete (UFC) Beams

The objective of this study is to clarify the effects of web position on the shear resistance mechanism of Ultra High Strength Fiber Reinforced Concrete (UFC) beams. Four-point bending tests were conducted on total three beams with different web positions, i.e. centered web, two webs arranged at the quarter of the flange and two webs at the edge of the flange. The results revealed the structural performances such as shear capacity, flexural rigidity, displacement at the shear failure and post peak behavior differed in each specimen. The different structural performances can be explained by the difference in the area resisting the shear force, which is determined by the existence of flange overhang and whether webs were distributed in the flange.