Nonlinear Finite Element Analysis Of Hybrid FRP Reinforcement Concrete Continuous Beam

In recent years, fiber reinforced plastics (FRP) reinforced in industrial and civil architecture in development is more and more rapidly, but the properties of FRP bars materials with completely linear elastic until the destruction make its further application restricted. FRP bar doesn't exert as good plasticity and deformation performance as concrete members reinforced. Therefore many experts and scholars put forward some methods to improve its deformation performance, one of the most effective is different fiber mixed configuration, so that made of hybrid FRP bars with similar reinforced deformation property. Currently, about hybrid FRP bars and its concrete component research has thorough development, this paper mainly studies the hybrid FRP bars continuous beam deformation performance, the main content as follows:The purpose of this article is mainly research has certain "ductility" hybrid FRP bars beam to the continuous application of plastic deformation capacity, and then analyzes its can make concrete continuous girder achieve internal force distribution, for heavy hybrid FRP bars in the super statically determinate structure and application of development makes the theoretical analysis basis.This paper adopts finite element software ANSYS to simulate the whole stressed deformation process about hybrid FRP continuous, and the modeling method, the unit, selection of material constitutive relation of the definition and solution methods to carry on the detailed analysis shows that the main considered the hybrid FRP bars and concrete beams of the material in nonlinear constitutive relation, this paper hybrid FRP bars of constitutive relationship is based on the existing test and research basis.The finite element analysis results show that the hybrid FRP bars and concrete bond-slip relationship between strength grade of concrete simply-supported reinforced deformation property of the influence of negligible, i.e., hybrid FRP bars simple-supported shape-shifting abilities mainly depends on the size of the reinforced just performance.For the thing that hybrid FRP bars applied on concrete continuous beam, the analysis results of finite element analysis software show that the hybrid FRP bars can make support section place of continuous beam has certain deformation ability, which can achieve certain internal force distribution of heavy but overall the internal force distribution of heavy degree are insufficient, therefore hybrid FRP bars deformation property still has certain limitation, can't achieve reinforced effect.