混合结构静力弹塑性分析与拟静力试验对比

Comparison of the Static Elasto-plastic Analysis and the Pseudo-static Test of a Hybrid Structure

基于通用有限元分析程序ABAQUS的开发接口,编制了用户材料子程序UMAT和VUMAT,可分别结合隐式以及显式求解程序,通过纤维模型对梁柱构件进行非线性分析。利用ABAQUS程序提供的混凝土弹塑性损伤模型,结合上述材料子程序,对文献[1]中拟静力实验的模型结构进行了静力弹塑性分析。计算结果与实验加载过程吻合较好,验证了混凝土纤维材料子程序及ABAQUS损伤塑性模型在高层建筑混合结构体系弹塑性分析中应用的有效性。

User material subroutine UMAT and VUMAT have been developed through the interface of the general FEA program ABAQUS, these two subroutines can be used in conjunction with implicit and explicit solver respectively to analyze the nonlinear behavior of beam column members with fiber model. The nonlinear static analysis of the pseudo-static test model structure in literature[ 1 ] has been carried out by using the ABAQUS damaged plasticity model for concrete and the user material subroutines developed~ The analysis results agree well with the loading process of the test, which shows the validity in the elasto-plastic analysis of hybrid tall buildings by using the damaged plasticity model and the user material subroutines through ABAQUS.