Investigation on dynamic properties of reinforced concrete with regular steel lattice microstructure

The dynamic compressive properties of reinforced concrete were investigated experimentally by one-stage light gas gun. In order to get the distributions of other mechanical parameters in the specimen, the experimental data were processed by the Lagrangian analytical method. The experimental results show that there is no improvement of dynamic compressive behavior of the concrete by adding reinforcing steel web in the range of reinforced ratio; however, the dynamic compressive strength and ductibility of the reinforced concrete increase greatly when the reinforced ratio increases. Thus it is considered that the dynamic behavior of reinforced concrete is greatly influenced by the reinforcement of steel and the increase of initial damage by adding steel web to the concrete. Base on these observations and theoretical work made by previous researchers, a dynamic constitutive relation of reinforced concrete including damage evolution was established. Theoretical estimation results agree reasonably well with the experimental data.