The Research Of The Reliability For The Reinforced Concrete Flexural Member Strengthened With CFRP

The repair and rehabilitation of exist structure is an important aspect in civil engineering. Lots of methods are offered to strengthen the constructions. For example: external prestressing, CFRP and so on. In recent years, with the development of the fibre and other material for repair our building; CFRP is becoming the most popular strengthening mean. Now, at home and abroad; first ,many researches are taken by tests, which can give us the information of the characters of the strengthened concrete structure ; then we try to offer a lot of methods for calculation.However, the little researches and data about the reliability of the repaired concrete structures can be provided, although a lot of means for reinforcement are able to be applied. At the same time , many methods based on the tests , which can't abide with the need of our reliability design.In the paper, the research tests of the character about the reinforced concrete. structure by CFRP are applied. Based on the mechanical properties of CFRP, there are many problems such as failure mode, ductility, ultimate strength and durability etc in the concrete structures strengthened with CFRP. Combined with the result of the tests, the methods for the reliability of the reinforced concrete structure are provided.