Analysis On Bearing Performance For Strengthening The Strengthened Reinforced Concrete Beam With FRP

As to reinforced concrete structure, the method to deal with the shortage of bearing capacity is one of the puzzles of structure engineering, so its reinforcement technology is a research hotspot. At present, although there are many reinforcing methods of existing structures, FRP is the more widely used in engineering because of its efficiency, low cost, and beauty.The paper takes the strengthened reinforced concrete structure beam with FRP for example, analysis and comparison of the test results are made, the bearing performance for the strengthened reinforced concrete beam with FRP is studied by the finite element method, the content is as follows:1. The bearing capacity calculation methods of the strengthened reinforced concrete structure beam with FRP are collected; the secondary stress of the component after reinforcement is considered. When it reaches bearing capacity limit state, calculation method of FRP lagging strain is given.2. The structure adhesive bonding principle and mechanical properties are analyzed; under load the calculation formula of the shear stress between structure adhesive and materials is obtained; the shear stress of the actual component is calculated by MATLAB language program.3. The bearing performance of the strengthened reinforced concrete beams is analyzed by three experiments, including "the crack, deflection and bearing capacity of normal section", "the shear bearing capacity" and "cohesiveness".4. The bearing performance of the strengthened reinforced concrete beams is analyzed by three experiments, including "the crack, deflection and bearing capacity of normal section", "the shear bearing capacity" and "cohesiveness".5. According to the experimental specimens, the mechanical property and deformation of the strengthened reinforced concrete beam with FRP are simulated and analyzed by nonlinear finite element method, the result has excellent rationality.