广东工业大学学报 ›› 2011, Vol. 28 ›› Issue (2): 27-30.

• 综合研究 • 上一篇    下一篇

输电塔覆冰倒塔的屈曲分析

  

  1. 1.广东工业大学 土木与交通工程院,广东 广州 510006;2.东莞市公路桥梁开发建设总公司 建工科,广东 东莞 523010
  • 出版日期:2011-06-25 发布日期:2011-06-25
  • 作者简介:秦佳俊(1986-),女,硕士研究生,主要研究方向为结构动力学、计算固体力学.

Buckling Analysis of Instablility of Icing Transmission Towers

  1. 1. Faculty of Civil and Transportation Engineering, Guangdong University of Technology,Guangzhou 510006,China;  
    2. Construction Department,Dongguan Highway Bridge Construction Corporation,Dongguan 523010,China
  • Online:2011-06-25 Published:2011-06-25

摘要: 以某60 kV线路中的一组自立式3560ZGu2输电塔塔架为计算对象,利用大型有限元软件SAP2000首次对不同呼称高度的覆冰输电塔结构进行了屈曲分析.计算出了输电塔屈曲的临界覆冰厚度以及输电塔覆冰屈曲的临界风速值,定量分析了最大垂直档距和地面类型的影响.研究表明,风荷载是输电塔失稳破坏的不可忽视的原因,随着呼称高度的增加,覆冰输电塔屈曲的临界风速呈减小趋势,而屈曲的覆冰厚度并非成正比增加.

关键词: 输电塔;屈曲;覆冰;风荷载

Abstract: A group of freestanding 3560ZGu2 transmission towers of 60 kV lines was taken for the calculation. The finite element software SAP2000 was first used to analyse icing transmission towers of different heights, the critical cladding ice thickness of buckling transmission towers and the critical wind speed of buckling icing transmission towers were calculated, and the influence of maximum vertical distance and the ground type was quantitatively also analyzed. The research shows that the wind load is the chief reason for the instability and failure of transmission towers,and that with the increase of calling  heights,the buckling critical wind speed of icing transmission tower decreases while the ice thickness of buckling transmission towers is not in proportion with the increase.

Key words: transmission tower; buckling; icing; wind

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