[提要]  将桅杆结构振型表示为三角级数形式，基于Lagrange第二方程，推导弹性支座连续梁模型简化振动方程。给出了不同情况下桅杆结构低阶频率和振型的实用计算表格，并通过计算实例与有限元方法进行比较，两者结果吻合较好。
[关键词]  桅杆结构  振动特性频率  振型

As expressing the modes of guyed masts in sin series, the simplified vibration equations for continuous beam supported by elastic springs are derived based on the second Lagrange equations.A precticable data table is given to calculate the first frequencies and modes of guyed masts with different spring supports, and the calculating result is confirmed by that results of FEM.
Keywords: guyed masts; inherent vibration characteristics; frequency; modes

    参  考  文  献
  1．蒋涛，马星，王肇民，桅杆结构风振系数的计算方法．特种结构，1998，(3)．
  2．王肇民．桅杆结构. 北京：科学出版社，2001．
  3．马星，邓洪洲，王肇民，桅杆结构静力计算简化计算方法．力学与实践，2001，(1)．