Study On The Bond-slip Relationship Between Reactive Powder Concrete And The Glossy Round Bar

This paper analyzed the mechanism of bond between the steel and reactive concrete powder. The numerical simulation of RC structures was referred. So study on the bond-slip performance of the simply supported beam of reactive powder concrete was realized. From these a set of methods to simulate the RPC beams with reinforcement with FEM analysis, which including the establishment of the FEM model, solution of the FEM model, solution results analysis and so on was finally established.Firstly basic conception and mechanics of the bond-slip relationship was discussed. The overview of former researchers on the bond-slip performance between reinforced bar and concrete in RC structures, including experimental methods and the equations of the bond-slip, was presented. Then the experiment and results of the bond-slip performance between the glossy round bar and RPC material were introduced.Secondly the methods and principles of FEM analysis of RC structures were fully introduced. According to the experiment results of the bond-slip performance between the glossy round bar and RPC material, nine pull-out members were conducted in ANSYS. In the model, nonlinear spring element was introduced. The numerical results were compared with the experiment results. Basic variable of the bond-slip performance in numerical analysis and the experiment results were analyzed. The bond-slip performance was confirmed to be practicable and reliable in the method..Finally three simple RPC beams with reinforcement were analyzed in FEM. During the numerical simulation, the two cases considering and not considering the bond-slip performance between the steel bar and RPC material were both conducted and compared with the experimental results. From the analysis results, it is concluded that both the simulation results of the two cases were near to the experimental results. The error values were within the range of 10%. The methods and skills of nonlinear FEM numerical simulation in this method of RPC structures were summarized and presented.