组合框架-核心筒体系抗震性能动力弹塑性分析方法

Dynamic elasto-plastic analytical method on seismic performance of composite frame-core tube system

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。

Secondary development was made on finite element program MSC. MARC,and an efficient dynamic analytical method on seismic performance of composite frame-core tube system was proposed by fine simulating the dynamic elasto-plastic behavior of each component under rare earthquake. This method was verified by shaking table test results,and comparative results manifested high accuracy and low computational cost of the method. Furthermore,elasto-plastic analysis under rare earthquake was applied on a simplified high-rise building. The results indicate that the frame could undertake more shear force under rare earthquake,to achieve the performance of ‘second defense'line.