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工程为框架-剪力墙结构,存在扭转不规则、凹凸不规则、楼板不连续、尺寸突变、构件间断、高位转换等多项超限。介绍了针对超限采取的计算和构造措施,采用了PMSAP和MIDAS两种不同力学模型的空间分析程序进行多遇地震、设防地震和罕遇地震下的对比计算分析;详细分析了转换钢桁架在各种情况下的分析结果:弹性动力时程分析、竖向荷载作用下承载力验算、抗连续倒塌分析,并用ABAQUS软件对钢桁架节点进行有限元分析。
The project is a frame-shear wall structure with irregularities such as irregular torsion, uneven irregularity, floor discontinuity, sudden size change, intermittent components, and high-level conversion. The calculations and construction measures adopted for overrun were introduced. The spatial analysis programs of two different mechanical models of PMSAP and MIDAS were used for comparative analysis of multi-event earthquakes, fortification earthquakes and rare earthquakes; the steel trusses were analyzed in detail. Results of analysis under various conditions: elastic dynamic time history analysis, bearing capacity verification under vertical load, continuous collapse analysis, and finite element analysis of steel truss joints using ABAQUS software.