Abstract:Based on the Weibull distribution and the hypothesis of strain equivalence, a damage model for steel fiber reinforced concrete(SFRC) was proposed. To describe the influence of fiber on the concrete compressive damage model better, a fiber factor considering the fiber volume fraction and fiber geometrical characteristic was introduced to the damage model. A series of uniaxial compression test was performed to modify the parameters of the damage model. Comparisons of the corrected theoretical curve and the experimental curves were performed. In order to verify the effectiveness of the damage model, comparisons of predicted compressive stress and measured compressive stress corresponding to the strain at 15εpk and 20εpk were performed respectively. The results show that the two curves are in very good agreement with each other. The damage model for SFRC is proved to be valid to describe the damage progress and residual compressive behaviour of SFRC under uniaxial compression at a range of 015εpk.