Second-order analysis and buckling based design of transmission tower without effective length assumptions

M. Fong, S. H. Cho, Y. P. Liu, Siu Lai Chan, J. Selvanathan

Research output: Chapter in book / Conference proceedingConference article published in proceeding or bookAcademic researchpeer-review

Abstract

Second-order analysis has been widely used for structures with members composed of symmetrical sections but its application to members of asymmetric sections is rather limited. In a recent project by the authors on design of a transmission tower in Myanmar which uses starred angles as main members and single angles as bracing members, the method is used and compared with the linear analysis. The initial imperfections recommended by design code are used and it was found that the method reduces significantly the design time required. Also, the result was found to be more rational than the linear analysis such as the complexity in assuming the buckling length of the legs which are continuous but intermediately tied by bracings and also under axial forces varying along the lengths. The proposed second-order analysis and design method eliminates the uncertainty of assumption for effective length which may lead to significant error in many practical structures.
Original languageEnglish
Title of host publicationICASS '09/IJSSD - Proceedings of Sixth International Conference on Advances in Steel Structures and Progress in Structural Stability and Dynamics
Pages875-882
Number of pages8
Publication statusPublished - 1 Dec 2009
Event6th International Conference on Advances in Steel Structures and Progress in Structural Stability and Dynamics, ICASS 2009 - Hong Kong, Hong Kong
Duration: 16 Dec 200918 Dec 2009

Conference

Conference6th International Conference on Advances in Steel Structures and Progress in Structural Stability and Dynamics, ICASS 2009
Country/TerritoryHong Kong
CityHong Kong
Period16/12/0918/12/09

Keywords

  • Angles
  • Buckling
  • Second-order analysis

ASJC Scopus subject areas

  • Civil and Structural Engineering
  • Building and Construction

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