根据混凝土结构设计规范中的混凝土本构模型,利用能量等效假设,引入损伤指标,由损伤演化参数公式直接计算得到塑性损伤模型所需的数据序列。通过对PBL剪力连接键推出试件循环加载过程中混凝土榫损伤的数值模拟,探讨了基于Abaqus塑性损伤模型的非线性有限元建模分析方法、技巧以及重启动分析方法。结果表明:随着损伤累积,混凝土榫刚度逐渐退化;塑性损伤模型能较为真实地模拟出混凝土的损伤场分布规律和工作状态,说明该模拟方法是有效的。 According to the concrete constitutive model of concrete structure design code, the damage index is introduced by using the energy equivalent assumption, and the data sequence required by the plastic damage model is directly calculated from the damage evolution parameter formula. Through the numerical simulation of concrete tenon damage during cyclic loading of PBL by PBL shear bond, the method of nonlinear finite element modeling analysis, skill and restart analysis based on Abaqus plastic damage model are discussed. The results show that as the damage accumulates, the stiffness of concrete tenons gradually degenerates. The plastic damage model can simulate the distribution law and working condition of concrete damage field more accurately, which shows that the simulation method is effective.