Electric Power ›› 2014, Vol. 47 ›› Issue (3): 90-95.DOI: 10.11930/j.issn.1004-9649.2014.3.90.5

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Comparison of Stability Factors of Axial Compressive Members in Transmission Towers in Design Codes

HAN Jun-ke1, 2, ZHANG Chun-lei3, YANG Jing-bo2   

  1. 1. Beijing Key Laboratory of Earthquake Engineering and Structural Retrofit, Beijing University of Technology, Beijing 100124, China;
    2. China Electric Power Research Institute, Beijing 100192, China;
    3. North China Power Engineering Co., LTD of China Power Engineering Consulting Group, Beijing 100120, China
  • Received:2013-12-07 Online:2014-03-31 Published:2015-12-18

Abstract: Stability is a very important problem in transmission towers. Taking the stability factor of axial compressive members in transmission towers as the research object, this paper presents stability factors of axial compressive members specified in American tower design guidelines (ASCE10-97), the British tower design specification (BS 8100-3) and European overhead transmission line of over 45 kV design specification (EN50431-1), and make a comparison with technical regulation of design for tower and pole structures of overhead transmission line(DL/T 5154—2002). The results show that stability factors of axial compressive members do not consider the influence of section classification in ASCE10-97, while DL/T 5154—2002, BS 8100-3 and EN 50431-1 considers the influence of section classification on stability factor curves; for the stability factor of hot-rolled angle steel members in transmission towers, ASCE10-97 is greater than DL/T 5154, while BS 8100-3 and EN 50431-1 almost equals to DL/T 5154—2002; for stability factor of cold-formed steel tube members, ASCE10-97 is greater than DL/T 5154—2002, BS 8100-3 almost equals to DL/T 5154—2002, and EN 50431-1 is the lowest.

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