Experimental Study On The Strengthening Of RC Column Using PUFA Composite Materials

Reinforced concrete structure is one of the most popular structure types used in thehighway bridge. Due to the degeneration of the material performance and maintenanceis not timely, a large number of reinforced concrete bridges are working in badconditions with different damages, seriously endangering the safety of the structure ofthe bridge. The lower part of bridge structure, especially the damage of bridge pier isessential to the security implications of whole bridge. Many scholars around the worldhave focused on the research of the retrofit of bridge pier. A large amount ofreinforcement method are proposed. These methods are based on different angles anddifferent materials to improve the durability and the bearing capacity of bridge pier.However, the study of the reinforcement didn’t get good solve, still attracts manyscholars continued to carry out the research in this field.PUFA composites is a newly developed material, which is friendly to theenvironmental protection in recent years. It is high strength, light quality, gooddurability and strong adhesive to concrete. Many scholars have used this compositematerial in strengthening the old bridges. The main content of this thesis is aimed at thestrengthen of reinforced concrete bridge cylinder piers, using new type of compositematerial PUFA. Through experiment and numerical simulation calculation, the effect ofstrengthening the RC piers using PUFA are investigated deeply. Several experimentsample are made out and tested in the lab. The relevant data is collected and analysiscarefully. At the same time, using finite element analysis software ABAQUS, thenumerical simulation analysis of the test process are carried out, the numericalsimulation results are in good agreement with those obtained with the test results. Testand numerical simulation results show that the PUFA materials can significantlyincrease the bearing capacity and deformation capacity of reinforced concrete bridgepiers. Based on the experimental results, the reinforcement design formula and designmethod of strengthening the RC bridge pier are proposed. Thesis research results canprovide reference for engineering application.