• CSCD核心库收录期刊
  • 中文核心期刊
  • 中国科技核心期刊

电力建设 ›› 2013, Vol. 34 ›› Issue (8): 56-63.doi: 10.3969/j.issn.1000-7229.2013.08. 011

• 输配电技术 • 上一篇    下一篇

500 kV重冰区同塔双回耐张塔设计及试验研究

韩大刚,刘洪昌,冯勇,李美峰,肖兵,肖洪伟,杨洋   

  1. 西南电力设计院,成都市 610021
  • 出版日期:2013-08-01
  • 作者简介:韩大刚(1981),男,硕士,高工,从事线路结构的设计和研究工作,E-mail: handg2000@163.com; 刘洪昌(1987),男,本科,助理工程师,从事线路结构的设计和研究工作,E-mail: provet@qq.com; 冯勇(1985),男,硕士,工程师,从事线路结构的设计和研究工作; 李美峰(1981),男,硕士,工程师,从事线路结构的设计和研究工作; 肖兵(1970),男,本科,高工,从事线路结构的设计和研究工作; 肖洪伟(1970),男,本科,高工,从事线路结构的设计和研究工作; 杨洋(1976),男,本科,高工,从事线路结构的设计和研究工作。
  • 基金资助:
    国家电网公司依托工程基建新技术研究项目(50-S342S)。

Design and Test of Strain Tower for 500 kV Double-Circuit Power Transmission Line in Heavy Icing Area

HAN Dagang, LIU Hongchang, FENG Yong, LI Meifeng, XIAO Bing, XIAO Hongwei, YANG Yang   

  1. Southwest Electric Power Design Institute, Chengdu 610021, China
  • Online:2013-08-01

摘要: 重冰区同塔双回输电设计是解决重覆冰地区输电走廊资源日益匮乏难题的重要方法,但由于同塔双回导、地线覆冰和脱冰的复杂性,国内外关于此方面的研究十分匮乏。以国内某重冰区500 kV输电工程首次采用的同塔双回耐张塔SJB4261为例,分析了重冰区同塔双回塔型的选择。结合铁塔真型试验,基于大量有限元数值计算全面对比分析了铁塔的变形及应力规律。计算表明,由于螺栓滑移效应的影响,数值分析的铁塔位移值均小于实测值,采用梁-杆单元模型能够较好地反映主材应力规律。试验铁塔成功完成预定工况的真型试验,表明重冰区应用同塔双回铁塔是可行的。

关键词: 耐张塔, 重冰区, 同塔双回, 试验, 有限元

Abstract: The design of double-circuit power transmission line is an important solution for the problem that the power transmission corridors are becoming increasingly scarce in the heavy icing area. But due to the complexity of ice-covering and ice-dropping of conductor and ground wire in double-circuit transmission lines, the relative research is quite deficient at home and abroad. Taking SJB4261 strain tower of double-circuit transmission line which was firstly adopted in a 500 kV transmission project in heavy icing area as an example, the tower type selection for double-circuit transmission line was analyzed in heavy icing area. Deformation and stress rules of tower were comprehensively analyzed based on tower's full-scale tests and lots of finite element numerical calculations. The calculation results show that all the displacements of tower in numerical analysis are smaller than those in actual measurements due to the influence of bolt slip effect, and beam-bar unit model is able to better reflect the stress rule of main materials. The full-scale tests of tower are successfully completed under predetermined condition, which demonstrates that the strain tower of double-circuit transmission line is feasible in heavy icing area.

Key words: strain tower, heavy icing area, double-circuit power transmission line, test, finite element