摘要
运用有限元程序ANSYS对某复杂高层建筑结构进行了模态分析及地震载荷作用下的时程分析,通过计算得出了结构的前20阶频率、振型,并进一步计算了在地震作用下时程分析的位移及内力,结果表明该结构具有很大的抗侧刚度,且沿高度分布均匀,自振频率满足结构使用要求,为结构设计提供了可靠的参考数据。
The dynamic property of a high-rise building structure and the time-history of its response under earthquake were analyzed by using the finite element program ANSYS. A modal analysis of the tower was conducted and the first 20 frequencies and modal shapes were obtained. The displacements and inner forces under the earthquake were calculated. The results show that the structural stiffness is enough to sustain earthquake load and along the height the stiffness is uniformly distributed. These results provide reliable basis for structural design.
出处
《振动与冲击》
EI
CSCD
北大核心
2008年第7期171-173,共3页
Journal of Vibration and Shock
关键词
高层建筑结构
自振频率
时程分析
high-rise building structure
natural frequency
time-history analysis
