(同济大学建筑工程系 上海 200092)
【提要】 对实际工程应用中的某单回路输电铁塔斜材的振动原因进行了分析，通过建立有限元分析模型并进行动力特性分析，指出横隔面以及塔腿斜平面的布材不合理是导致铁塔斜材振动的主要原因，通过施加初始激励证实了主材扭转对斜材振动也有一定影响，由此提出了曲臂、横隔面以及塔腿斜平面改进后的合理布材形式，以供实际工程设计参考。
【关键词】 输电铁塔 振动分析 动力特性 动力响应
Vibration Analysis on Cross Members of a Steel Transmission Tower/Wu Jing,Deng Hongzhou,Fu Pengcheng(Department of Building Engineering,Tongji University,Shanghai 200092,China)
Abstract:The vibration of cross members of a single circuit steel transmission tower is analyzed,and finite element analysis models are established.Through the model establishment  and timehistory analysis,it is pointed out that the inapposite arrangement of cross sections and slant planes of legs are the main factors of the vibration.By initi
ally exciting one point of the tower,the torsion of chord members is also testified to the influence on the vibration.Consequently,improved arrangements of braces,cross sections and slant planes of legs,are recommended.
Keywords:steel transmission tower; vibration analysis; dynami
c behavior; dynamic response
*国家自然科学基金资助项目(50078040)。