Dynamic Constitutive Model of Steel Fiber Concrete

Abstract

The paper studies the dynamic compressive strength of steel fiber reinforced concrete. ZWT constitutive model was choose as the basic framework, and the introduction of forms of damage factor Weibull function optimization, combined with M-6 and M-10 groups the experimental data determined parameters, and with the experimental obtained stress-strain curves were compared. The constitutive equation can more accurately reflect the constitutive relation of steel fiber reinforced concrete under three strain rate, and in the form of a shape parameter and scale parameter to distinguish different types of content and steel fiber concrete area, relatively simple parameters, to be close and convenient.