The Research On The Design Principle Of Carbon Fiber Reinforced Plastic Prestress Concrete

The Carbon Fiber as a new material is widely used in all area with its little density, high module, high intensity and high stillness. The Carbon Fiber Reinforced Plastic (CFRP) is also widely used in the civil engineering construction with its high characteristic. Since later 1980, Europe, American and Japan use Fiber Reinforced Plastic to replace steel strand, and study its material and structure properties. Achieving much in experiment research and engineer application. The foreground of CFRP is visible in building and bridge. It is benefit to society and economy to study its application in concrete structure.The analysis on concrete structure has developed from the permissible stress method based on elastic theory to the limit-state design. The single safety coefficient was replaced by separate safety coefficient. The safety coefficients were used to discern different material, loads and work conditions. In this way, the reliability in different structures is consistent. Some of the load factors and material factors were defined according to statistical data.Some calculating method based on reliability theory such as JC method, MONTE CARLO method are described in this paper, and the statistic regularity for loads and structure resistance is given. The basic performance, development condition and application in the engineering are summarized. A prestressed Canada bridge is used to evaluate its reliability using reliability theory. The results suggest that the reliability analysis using Monte Carlo Method is feasible.The calculation method of this text can fit up to the similar prestressed construction in civil engineering as well. It has important reference value in engineering design.