3D Simulating Analysis And Application Of Carbon Fiber Reinforced RC Beam Under Sustainable Loads

In the recent years, fiber has been used in civil field for its good structural characteristics and endurance performance, and especially developed fast in civil engineering. The bending resistant capacity experiment of reinforced concrete beam has been studies both here and abroad at present. One hand, these experiments have been studied by original element, which different evidently to practice. It has practical sense to simulate more reinforced structural performance. On the other hand, it is difficult to analyze the whole process of structural interior force and deformed shape by experiment, and difficult observe concrete interior subtle crack's occur and expend under interface, consequently difficult to find out peeling mechanism. The ideal analytic solution can't found out by interface nonlinear behavior through theory. Appropriate numerical methods are need adopted to simulate corrupt process on the basis of experimental study, further knew the interior mechanism. The relating computation in carbon fiber cloth of criteria basically is vacant in our country. It is necessary to study the interface behavior of carbon fiber cloth concrete, and the mechanism, numerical model and design formula has been deeply studied.The article applied appropriate constitutive and failure criterion of concrete, steel and carbon fiber cloth. The interface element was used to simulate felt and slippage between carbon fiber cloth and concrete by ADINA. The article applied traditional smearing crack model, and applied partial fine meshing manner which make the simulation accord with practical situation. Finally, choose experimental data make by other investigator, through comparison of 16 beam experimental results, and testify that the finite numerical model on the basis of previous theory is feasible, and the precision is high. In addition, the article apply double-peeling failure criterion, which make the model simulate the peeling destructive process, and observe concrete interior subtle crack and its extending process, consequently find out the mechanism of peeling failure.