Shear Capacity Plastic Analysis of Steel Fiber Reinforced Concrete Beams with Reinforcement

Based on the experimental results and the characteristic of stress strain relationship of steel fiber reinforced concrete, the yield formulas of reinforced bar, concrete and steel fiber reinforced concrete were confirmed. Then the diagonal sectional failure mode of steel fiber reinforced concrete beams with reinforcement was established. With the plastic ultimate analysis, the plastic calculating formula and correspond coefficient μ1 and μ2 were researched. The calculating results indicate that by adjusting the thickness of steel fiber reinforced concrete, the plastic formula was adapt to the normal reinforced concrete beams, steel fiber reinforced partial concrete beams and steel fiber reinforced concrete beams. And fit the experimental data well, which is concerned with the thickness of steel fiber reinforced concrete, the shear span to effective depth retio and the concrete strength.