The Application Of Elastic Modulus Of Steel Fiber Reinforced Concrete By Homogenization Method

Steel fiber reinforced concrete, with its outstanding performance, has been widely usedin varies engineering domains. Due to steel fiber reinforced concrete tensile, flexural andshear strength is higher than ordinary concrete strength, thus caused a lot of scholars toresearch. Elastic modulus is one of the significant parameters of steel fiber reinforcedconcrete, Generally, Study the elastic modulus of steel fiber reinforced concrete byexperimental or theoretical calculation method, this article by theory of asymptotichomogenization and finite element method to study elastic modulus of steel fiber reinforcedconcrete. The contents and results are summarized as follows:(1) Development, application, distribution and research on basic theories of steel fiberreinforced concrete were reviewed and summarized;(2) Theory of asymptotic homogenization, Homogenization of steel fiber reinforcedconcrete were described in detail;(3)3D model of structure cell was proposed, Importing HyperMesh to completed finiteelement pre-processing, Writing uniform procedures to completed finite element postprocessing,(4) the influence of the volume ratio, aspect ratio, and the distribution of the steel fiber aswell as the matrix strength of the concrete on the composite materials’ elastic modulus hasbeen studied in this paper. At the same time，The value obtained by this method werecompared with literature values. Through the calculation of the equivalent elastic modulus ofvarious cells, we acquired the equivalent modulus of steel fiber concrete. The simulationresult indicates the equivalent modulus can be improved with the increase of the steel fibercontents and the matrix strength.While the equivalent modulus is not sensitive to the changeof the aspect ratio. But the distribution of the steel fiber has significant influence on theequivalent modulus, and it is the most important influential fact; Comparison with literaturevalues, The result we get is basically tallies with the elasticity modulus in that paper when thesteel fiber content of less than1.2%. Otherwise it is not suited.(5) Nowadays, The layered steel fiber reinforced concrete pavement is mainly composedof small amounts of steel fibers, where steel fiber content of less than1.2%, For steel fiberreinforced concrete rigid pavement by homogenization theory. And let pavement layershomogenized into a laminate system to Study on Performance...