基于ABAQUS考虑钢筋–混凝土粘结滑移关系的剪力墙数值模拟

Numerical Simulation of Shear Wall Considering Bond Slip Relationship between Reinforcement and Concrete Based on ABAQUS

为考虑钢筋–混凝土粘结滑移的影响,基于ABAQUS建立剪力墙模型并引入钢筋屈服强度退化本构关系,通过施加循环往复荷载,结合已有试验对模型的混凝土损伤与承载能力进行对比分析。研究结果表明,该有限元模型的受压损伤、骨架曲线、承载力与试验结果较为吻合,模拟骨架曲线与试验骨架曲线趋势接近,但极限荷载略低于试验值,模拟曲线各特征点的荷载与位移最大误差不超过8%。

In order to consider the effect of bond slip between reinforced concrete and concrete, a shear wall model is established based on ABAQUS, and the degradation constitutive relation of reinforcement yield strength is introduced. The concrete damage and bearing capacity of the model are compared and analyzed by applying cyclic loading and combined with existing tests. The results show that the compression damage, skeleton curve and bearing capacity of the finite element model are in good agreement with the test results. The trend of the simulated skeleton curve is close to that of the test skeleton curve, but the ultimate load is slightly lower than the test value, and the maximum error of load and displacement at each characteristic point of the simulation curve is no more than 8%.