Abstract：Through analyzing the failure characteristic and shear mechanism of steel fiber reinforced concrete (SFRC) beam-column joints, the action of steel fibers disorderedly distributed in concrete can be treated by the effective tension stress. On the basis of the modified compression field theory (MCFT), a new calculation method for shear behavior of SFRC beam-column joints is established, and the influence of the steel fiber volume ratio and horizontal stirrup ratio on the shear capacity is studied. The results show that the shear capacity increases with the steel fiber volume ratio and horizontal stirrup ratio, but the efficiency of steel fibers is smaller than stirrups. Finally, the simplified calculation formula for shear capacity of SFRC beam-column joints has been set up in conjunction with that for calculating reinforced concrete beam-column joints.
