【摘要】 通过应用OpenSees有限元软件对同济大学于2003年完成的12层钢筋混凝土标准框架振动台模型试验进行了考虑地震累积效应的数值模拟,同时应用建议的基于改进直接刚度法形成的OpenSees系统识别工具箱对此模型的损伤情况进行了初步评估。将识别结果与试验报告中不同工况下的损伤描述进行对比,发现建议应用的OpenSees系统识别工具箱对空间框架在不同方向上的损伤进行初步评估的方法是可行和有效的。更多还原

【Abstract】 The numerical simulations for the benchmark test of a 12-story reinforced concrete frame model carried out in Tongji university in 2003 were conducted with the consideration of cumulative effect caused by series of earthquake events in platform of OpenSees.Meanwhile the damage status of the model was evaluated by using the system identification toolbox of OpenSees formed by the principle of the improved direct stiffness method.Through comparison with the damaging description in several cases during the test,it was demonstrated that the preliminary assessment by using the system identification toolbox to conduct damage detection of 3-D frame structures in different direction is feasible and effective.更多还原