基于Ansys的输电塔架钢结构模态分析  

Modal Analysis of Steel Structure of Transmission Tower Based on Ansys

作　　者：鲍宇 陈东 BAO Yu;CHEN Dong(School of Civil Engineering,Anhui Jianzhu University,Hefei 230601,China)

机构地区：[1]安徽建筑大学土木工程学院

出　　处：《兰州工业学院学报》2020年第1期20-23,共4页Journal of Lanzhou Institute of Technology

基　　金：安徽省自然科学基金(1908085ME173);国家重点研发计划项目(2016YFC0701700)

摘　　要：针对钢结构输电塔架设计上的不足之处,采用Ansys软件构建输电塔有限元分析模型进行结构模态分析,获得每个模态的振型特点,并在设计前通过有限元软件仿真提取结构动态特性振型和固有频率.结果表明:该钢结构输电塔的主自振周期为0.10~0.52 s;钢结构输电塔架在3个维度方向中X方向位移数值较大;在高阶振型中,输电塔结构的薄弱部位需要设置加固措施.In view of the shortcomings in the design of steel transmission tower,ANSYS software is used to construct the transmission tower finite element analysis model for structural modal analysis,to obtain the vibration characteristics of each mode.And before the design through the finite element software simulation,extract steaming type and natural frequency of the structure are obtained.The results show the main natural vibration period of the steel transmission tower is 0.10-0.52 s,the displacement of steel transmission tower in X direction is larger in the three dimensions.In the high order mode,the weak part of the transmission tower structure needs to be reinforced.

关 键 词：输电塔 模态分析 钢结构 

分 类 号：TU502[建筑科学—建筑技术科学]