【摘要】 大底盘多塔楼结构是底部相连上部分开的一种复杂结构形式,目前国内外对这种结构体系的抗震性能研究较少.应用大型有限元软件ANSYS建立了大底盘双塔楼有限元模型,采用动力时程分析法对有限元模型进行地震响应计算,并对比分析了在弹性边界条件与刚性边界条件下大底盘双塔楼结构的抗震性能.研究结果表明,弹性边界下模型的动力响应比刚性边界下的动力响应大,弹性边界下模型可以实现地基的弹性恢复性能,更加接近实际情况.更多还原

【Abstract】 A Multi-tower structure with enlarged base is a complex structure form which is connected at the bottom but departed at the top,and the research on the seismic behavior of this structure system is less at home and abroad. The finite element software ANSYS was adopted to establish the finite element model of twin-tower building with enlarged base,the dynamic time history analysis method was used to calculate seismic response for the finite element model,and the seismic behavior of twin-tower building with enlarged base was compared and analyzed under elastic boundary conditions and rigid boundary conditions. The results showed that the dynamic response under elastic boundary conditions was larger than the one under rigid boundary conditions,and the model under elastic boundary conditions could realize elastic recovery performance of foundations,which was more closer to the actual situation.更多还原