The existence of pore water in the saturated concrete has the remarkable influence on the mechanical property of concrete.It exhibits the viscous effect under dynamic loading case

and the effect strengthens with the growth of the micro-crack density induced by the meso-damage of material.Combined with the Terzaghi’s effective stress principle

a dynamic damage constitutive model for the saturated concrete under uniaxial tension is proposed.The model establishes the relationship between the macro mechanical properties with the meso-damage mechanism of concrete material

which synthetically considers the influence of the inertia effect and the viscous effect of the saturated concrete under dynamic case.The inertia effect leads to the change of the failure pattern and the meso-damage evolution process of materials

and the viscous effect leads to the adjustment of the loading condition of the matrix.Comparison of the prediction with experimental data shows that it can not only reflect and predict the dynamic tensile behavior of the uniform damage phase for saturated concrete under the constant strain-rate dynamic cases

but also describe the damage evolution mechanism of saturated concrete under dynamic loading case.