基于通用有限元程序MSC.MARC进行二次开发,对组合框架-核心筒体系的不同构件在罕遇地震作用下的动力弹塑性行为进行精细化模拟,提出了组合框架-核心筒体系抗震性能动力弹塑性分析方法。采用已有的振动台试验结果对建议的方法进行验证,对比结果表明建议方法具有较高的精度和效率。对一简化高层结构进行罕遇地震作用下弹塑性分析,计算结果表明:框架-核心筒体系中框架部分在罕遇地震作用下能够承担更多地震作用,进而发挥“二道防线”作用。 Based on the common finite element program MSC.MARC, a secondary development was carried out to simulate the dynamic elasto-plastic behavior of different components of the combined frame-core tube system under rare earthquakes. The seismic behavior of the combined core- Elastoplastic analysis method. The proposed method is validated by the existing shaking table test results. The comparison results show that the proposed method has high accuracy and efficiency. The elastic-plastic analysis of a simplified high-rise structure subjected to rare earthquakes shows that the frame part of the core-tube system can take more seismic action under rare earthquakes and then play a role of “second line of defense” .