【摘要】 采用弹塑性损伤本构模型,该模型结合了非线性各向同性和随动强化准则以及基于塑性位移的损伤演化规律,利用ABAQUS对一个9层钢结构在EL-Centro地震波作用下塑性变形和损伤区域的发展过程进行了数值模拟。结果表明,上部楼层的梁端产生较明显的塑性变形并形成损伤部位。这与在Northridge地震中观测到的高层钢结构的地震损伤情况是一致的。更多还原

【Abstract】 The paper simulates the damaging process of a 9-story steel frame under EI-Centro earthquake ground motion using ABAQUS.In the analysis,the plastic damage model is combined with the nonlinear isotropic/kinematic hardening criteria and the damage evolution law of plastic displacement.The results show that the beam ends of upper floors undergo obvious plastic deformation and incur the appearance of damage domains.This observation is consistent with the observed seismic damage of high-rise steel structures during the Northridge earthquake.更多还原