전단 보강이 없는 고강도 섬유보강 철근 콘크리트보의 전단 역학적 거동에 관한 연구

Shear Mechanism of Steel-Fiber Reinforced High Strength Concrete Beams without Shear Reinforcement

Investigations on the behavior of steel fiber reinforced high strength concrete beams subjected to predominant shear are accomplished to determine their diagonal shear strength including ultimate shear strength. The parameters varied were the volume fraction(Vf) of the fibers, shear span depth ratio(a/d). The test result show that diagonal shear strength and ultimate shear strength are increased siginificantly due to crack arrest mechanism. Predictive equations are suggested for evaluating the diagonal cracking strength and ultimate shear strength of the fiber reinforced high strength concrete beams.