In order to explore the coupling mechanical properties of plastic damage of concrete,the effects of aggregate content and loading rate on the macroscopic mechanical properties of concrete were studied based on the random aggregate model and plastic damage coupling model...MORE In order to explore the coupling mechanical properties of plastic damage of concrete,the effects of aggregate content and loading rate on the macroscopic mechanical properties of concrete were studied based on the random aggregate model and plastic damage coupling model.The Parameters are determined by geometric model an...