| Reinforcement and concrete are two kinds of materials with different properties.The basis of their working together is good bond performance between them.Therefore,it is very important to study the problem of slippage in reinforced concrete structures.At present,under the condition of static load of the bonding performance of the steel bar and reinforced concrete is mature,the current building structure seismic design specification is based on static load test results compiled,under the condition of without considering the influence of loading rate on the cohesive force of reinforced concrete.This article is based on the national youth science fund project "the research on dynamic binding reinforcement and concrete performance,based on the experiment of reinforced concrete dynamic bonding performance between numerical simulation.The numerical simulation results are compared with the experimental results,and the validity of the model is verified.Numerical simulation is carried out on the basis of experiment.Well considering the problem may exist in the process of test,try to be numerically simulate the conditions set consistent with the trial,to ensure the correctness of the numerical results to verify the validity of the model.Is a powerful engineering simulation of ABAQUS finite element software,finite element model is established by using ABAQUS software,in this paper,considering the rate of steel bar and concrete and the bond-slip performance sensitive star,adopts the Spring2 nonlinear spring element to simulate the bond-slip between reinforced concrete,a numerical simulation of the drawing of reinforced concrete specimen is mainly study the loading rate effect on bond-slip performance of reinforced concrete,and explores the concrete strength,steel type,bar diameter,and the influence of the anchorage length on the cohesive force of reinforced concrete. |
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