摘要
运用大型有限元软件ANSYS对某一高层结构模型建立三维有限元模型,并对其基础施加差异沉降进而进行动力特性和地震反应分析.分析结果表明,差异沉降对建筑物上部结构位移、加速度包络图及时程曲线有不容忽视的影响,且上部结构越高,这种影响越明显.结构的动力特性和地震反应不仅取决于结构本身的刚度及输入地震波的特性,而且与基础的差异沉降有密切的关系.
In this paper, three-dimensional finite model of the high building is can＇ied out by the large general analysis software ANSYS. Dynamic behavior and seismic analysis are studied on the differential scttlement building. The results show that it should not be neglected for the influence of earthquake action on the superstructure displacement and acceleration time-history due to the differential settlement. Furthermore, higher the structure is , the effect is clear. Dynamic behavior and seismic response are not only decided by the stiffness of structure and the character of earthquake, but also by the differential settlement.
出处
《建筑技术开发》
2005年第8期43-45,共3页
Building Technology Development
基金
广东省自然科学基金
关键词
地震反应
差异沉降
时程分析
ANSYS建模
Seismic response
Differential settlement
Time-history analysis
ANSYS modeling
