[提要]  采用SAP2000程序建立了合肥电视塔的三维有限元模型，在此基础上导出了符合电视塔动力特性的二维竖向串联多自由度体系模型，并对两者的计算结果进行对比，结果表明，二维竖向串联多自由度体系模型的动力特性与三维有限元模型的动力特性基本吻合，可以用二维竖向串联多自由度体系模型进行合肥电视塔的振动控制研究。
[关键词]  三维有限元模型  二维竖向串联多自由度体系模型  动力特性  振型  频率

The 3D-dynamic finite element model of the Hefei TV Tower is established with the program SAP2000, and the 2D-lumped mass model is also established based on the 3D model in order that the major dynamic characteristics of the tower may be remained. The dynamic characteristics obtained from the 2D-model are consistent with those from the 3D-model. So the 2D-lumped mass model can be used for the vibration control analysis of the tower.
Keywords: TV tower finite element; lumped  mass; model; dynamics; characteristic; modes; natura!  frequency