【摘要】 为了对高层框架结构在强震作用下的倒塌破坏过程进行仿真模拟和分析,运用ANSYS/LS-DYNA有限元软件对一10层框架结构进行强震作用下的分析,从弹性工作阶段到构件开裂直至倒塌破坏的全过程进行了三维非线性仿真分析,仿真结果与真实倒塌过程吻合较好。通过合理选取计算参数和计算模型,可以成功地再现高层钢筋混凝土框架结构倒塌破坏的全过程,从而发现其在强震下的薄弱环节,为揭示高层框架结构倒塌破坏机理以及提高结构的抗震性能提供理论分析依据。更多还原

【Abstract】 In recent years,some strong earthquakes had caused many collapses of high-rise steel reinforced concrete frame structures.Using the ANSYS/LS-DYNA finite element software,a 10-layers frame structure under the action of earthquake was modeled and analyzed.The 3-D non-linear modeling covered all stages of collapse including elastic,cracking and collapse.The simulation results match the real toppling process very well.By rational selection of parameters and models,the simulation can successfully reproduce the collapse of high-rise steel reinforced concrete frame structure in a strong earthquake,find the weak links of high-level frame structure and reveal the structural mechanism of collapse of high rise structures.The study provides a theoretical basis for improving the anti-earthquake performance of high-rise structures.更多还原