用ANSYS分析某高层建筑的非线性地震反应

运用大型有限元分析软件ANSYS对某高层建筑进行振型分析,得到了该建筑物的自振特性;并采用时程分析法进行非线性地震反应分析,计算输入3种地震波时顶层水平位移时程曲线、顶层加速度时程曲线、水平位移沿楼高的分布曲线以及层间变位角沿楼高的变化曲线.结果表明,利用ANSYS软件建立三维模型,进行非线性地震反应分析是可行的,并能得到较高的精度.

Application of ANSYS to seismic response nonlinear analysis of high buildings

Vibration mode analysis of high buildings is discussed by using the large general structural analysis software ANSYS, from which the characteristics of free\|vibration are obtained. Moreover, seismic response nonlinear analysis of a building is carried out adopting time\|dependent method. Introducing three natural earthquake waves calculated are the results including time\|dependent curve of roof horizontal displacement, time\|dependent curve of roof acceleration, distribution curve of horizontal displacements varying with building height, relative story deflection angle curve varying with building height. The results demonstrate that ANSYS can be applied to the seismic response nonlinear analysis of buildings and the excellent accuracy can be achieved.