框架-剪力墙结构建筑物定向倒塌的研究

摘要

利用ANSYS/LS-DYNA有限元软件,采用共用节点分离式模型对某高层框架-剪力墙结构的定向爆破拆除进行数值仿真研究.通过与实际工程的对比发现:分离式模型模拟的结果较好地符合实际,对工程具有指导意义.进而,分析了钢筋和混凝土单元的应力-时程曲线,指出共用结点分离式钢筋混凝土模型能很好的反映钢筋和混凝土2种材料的力学性能差异.%By the ANSYS / LS-DYNA finite elements software, the numerical simulation research is conducted to the directional demolition of certain high frame-shear wall structure using common node separate model. Compared to the actual project, it is found that separate model simulation results can better meet the reality, and also guiding significance to the actual project. Finally, the steel and concrete elements' stress-time curve is analyzed, which shows that the common node separate reinforced concrete model can well reflect the differences of mechanical property between the reinforcement and concrete.