Study On The Flexural Property Of New FRP Reinforcement Concrete Beam

Enhancing fiber composites FRP rebar’s light weight, high strength, corrosion resistance is the way instead of steel reinforcement to solve corrosion problems and used in civil engineering. FRP reinforcement is a kind of the latest model of fiber reinforced materials. It uses the continuous fiber (carbon fiber, aramid fiber, glass fiber and assorted fiber)as reinforced materials. It’s made through protrusion technology, and based on epoxy resin and other polymer. The most differences between FRP reinforcement and steel bar is that the FRP reinforcement has good corrosion resistance. And this performance decide that the FRP reinforcement can be used in bridge, dock and some other wet environment, or sea water and some erosion environment, or substation, airport and some other electric power construction.At present, the application of FRP reinforcement mainly includes two aspects. First is the old building’s maintenance and reinforcement, this the development direction of FRP reinforcement. Second is using FRP reinforcement directly in new structure instead of steel. In new structure, the internal force is transferred by the binding power between FRP reinforcement and concrete. So the binding force becomes main factor to influence member’s deformation behavior, crack width, mechanical behavior, fracture morphology and bearing capacity. So enhancing the binding force is the most important problem, and this is also the main research aspects in this paper.This paper takes certain experiments. It designs4FRP reinforcement concrete beam. It carries systematic study to FRP composites reinforcement concrete structure. And put forward the single root GFRP muscle in the beam respectively in central anchor and at the end of the anchor, then enhance the binding force between FRP reinforcement and concrete. Making one group contains4FRP reinforcement concrete beam components, adopting two points loading. Measuring FRP reinforcement concrete component’s load-deformation relationship, concrete component’s failure form and failure mechanism, crack development situation. Contrast the different ways of reinforcement of FRP bars to concrete bonding between performance and crack spacing, crack width, and the influence of the maximum deformation. And use ANSYS finite element software to carry nonlinear analysis of GFRP reinforced concrete beams. Using experimental parameters building my finite element model, and complete the whole model of the stress process simulation. The final results compared with the experimental results, which verify the unity of theory and practice. According to the theoretical results and experimental results contrast against the length of the steel tube push, to verify the unity of theory and practice. The test result shows that anchoring FRP reinforcement in beam can increase the binding force between FRP reinforcement and concrete. The anchoring points are different, so the increase degree of FRP reinforced concrete beams’ultimate bearing capacity is different. The experiment’s results for later research provides a foundation and basis for further study in the future.