摘要
以500 kV超高压线路中紧凑型直线输电铁塔CSZ1、CSZ2为对象,利用有限元分析软件AN-SYS,按空间梁杆混合结构方法建立有限元模型.计算分析了该系列输电铁塔的动力特性,并研究、归纳其各阶振型的特点.根据CSZ铁塔的动力特性,修正了工程上常用的第一自振周期近似公式.
The compact linear-type towers CSZ1 and CSZ2 for the 500 kV EHV transmission lines are described.According to space beam-rod hybrid structure approach,the finite element model is established by ANSYS.Through by the modal analysis,the natural frequency,vibration modes of the models can be achieved.Based on the above analysis,the first-order approximation formula used in the engineering commonly is revised to estimate the natural frequencies of this type towers.
出处
《三峡大学学报（自然科学版）》
CAS
2010年第2期58-60,共3页
Journal of China Three Gorges University：Natural Sciences
关键词
紧凑型铁塔
有限元
动力特性
振型
自振周期
compact type tower
finite elements
dynamic behavior
vibration mode
natural frequency
