摘要
运用通用有限元程序ANSYS对某天气雷达站塔楼结构进行了自振特性分析及地震载荷作用下的时程分析 ,通过计算得出了雷达站塔楼的前 2 0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 ,验证了结构设计的可靠性 。
The dynamic property of a weather radar tower and time history analysis 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 force under the earthquake were calculated. The result showed that the structural stiffness was enough to sustain earthquake load; and the stiffness distributed equally. The first frequencies meet the requirement of structure. These results can provide reliable basis for structural design.
出处
《华中科技大学学报（自然科学版）》
EI
CAS
CSCD
北大核心
2004年第8期28-30,共3页
Journal of Huazhong University of Science and Technology(Natural Science Edition)
基金
教育部博士学科点专项基金资助项目 (2 0 0 30 4 870 1 6 )
关键词
雷达站塔楼
自振频率
振型
时程分析
radar tower
natural frequency
modal shape
time-history analysis
