摘要
以某大底盘非对称双塔连体建筑为例,通过建立有限元模型,分析了结构的动力特性,得到了前30阶振型质量参与系数。采用时程分析法,输入x、y向水平地震激励,得到了结构的顶层的速度、加速度时程曲线,以及建筑底部剪力时程曲线,为结构设计提供了设计依据。
Asymmetric twin tower connecting buildings with large bases were studied.The FEM model was established.The dynamic characteristics of model was studied,achieve the mass participation factors of the first 30 mode.The x-direction and y-direction level seismic excitation were input separately with the help of time-history analysis method.The displacements time-domain curve and the acceleration time-domain curve of the top of the structure are obtained,the bottom of the structure＇s overall shear forces time-domain curve also is obtained,the reference of structural design is provided.
出处
《科学技术与工程》
2011年第30期7539-7543,共5页
Science Technology and Engineering
关键词
大底盘
振型
地震响应
时程分析
large bases vibration mode seismic responses time-history analysis
