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Finite Element Analysis on Low Cycle Fatigue Properties of HRBF RC Pile Tip

Numerical simulation of the entire process of HRBF RC pile tip under the low cycle fatigue tests were carried out by nonlinear finite element software ABAQUS. The simulation results included hysteretic curve, skeleton curve, the equivalent plastic strain cloud, the concrete damage cloud and etc. On this basis, it is simulated and calculated by changing the strength of concrete, reinforment ratio, axial load ratio, strength of longitudinal reinforcement and stirrup ratio, to gain the effect of skeleton curve. FEA results show that: the results wear agreed well with the experimental results, and this method was proved feasible; high-strength steel could improve the bearing capacity of components, and its members had good energy dissipation capacity.