力学与实践 ›› 2020, Vol. 42 ›› Issue (4): 447-454.DOI: 10.6052/1000-0879-20-006

• 应用研究 • 上一篇    下一篇

覆冰四分裂导线风洞试验与稳定性研究1)

闵光云*, 刘小会*,†,2), 严波**, 孙测世*, 蔡萌琦**   

  1. * 重庆交通大学土木工程学院,重庆400074;
    † 重庆交通大学省部共建山区桥梁及隧道工程国家重点实验室,重庆400074;
    ** 重庆大学航天航空学院,重庆400044;
    †† 成都大学建筑与土木工程学院,成都610106
  • 收稿日期:2020-01-07 出版日期:2020-08-20 发布日期:2020-08-25
  • 通讯作者: 2)刘小会,副教授,研究方向为输电线结构动力学分析。E-mail: cqdxlxh@126.com
  • 基金资助:
    1)国家自然科学基金(51308570,51808085),重庆市研究生科研创新项目(CYS19240),重庆市教委科学技术研究项目(KJ201600712182),重庆市创新训练项目(S201910618016),国家自然科学基金(51507106)和重庆市科委基础科学与前沿技术研究项目(cstc2017jcyjAX0246)资助

WIND TUNNEL TEST AND STABILITY STUDY OF ICED QUAD BUNDLE CONDUCTOR1)

MIN Guangyun*, LIU Xiaohui*,†,2), Yan Bo**, SUN Ceshi*, CAI Mengqi††   

  1. * School of Civil Engineering, Chongqing Jiaotong University, Chongqing 400074, China;
    † State Key Laboratory of Bridge and Tunnel Engineering in Mountain Areas, Chongqing Jiaotong University, Chongqing 400074, China;
    ** College of Aerospace Engineering, Chongqing University, Chongqing 400044, China;
    †† School of Architecture and Civil Engineering, Chengdu University, Chengdu 610106, China
  • Received:2020-01-07 Online:2020-08-20 Published:2020-08-25

摘要: 通过覆冰四分裂导线与单导线风洞试验,得到了4种不同工况下的空气动力系数,接着采用等效替代法得到关于四分裂导线中心轴的等效气动力系数,再将该系数与相同条件下进行风洞试验所得的单导线气动力系数作对比。结合Den Hartog横向驰振机理与Nigol扭转稳定机理,分析了等效后覆冰四分裂导线的稳定区与不稳定区,并将其与单导线的稳定区与不稳区作对比,分析了两者的失稳。本文所得结论能对覆冰导线舞动研究与仿舞技术研究有一定的参考价值。

关键词: 覆冰导线, 四分裂, 气动力系数, 风洞试验, 稳定性

Abstract: The aerodynamic coefficients of the iced quad bundle conductor and a single conductor are obtained under four different conditions through wind tunnel test. The equivalent aerodynamic coefficients of the central axis of the quad bundle conductor are obtained by the equivalent method and compared with those of a single conductor under the same conditions. Based on the Den Hartog's galloping mechanism and the Nigol's torsional mechanism, the stable and unstable regions of the equivalent coefficients of the iced quad bundle conductor are determined. The results of this paper can be used in the research of the galloping and the simulation of the galloping of the iced conductor.

Key words: iced conductor, quad bundle, aerodynamic coefficients, wind tunnel test, stability

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