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

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 proceeding › Conference article published in proceeding or book › Academic research › peer-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 language	English
Title of host publication	ICASS '09/IJSSD - Proceedings of Sixth International Conference on Advances in Steel Structures and Progress in Structural Stability and Dynamics
Pages	875-882
Number of pages	8
Publication status	Published - 1 Dec 2009
Event	6th International Conference on Advances in Steel Structures and Progress in Structural Stability and Dynamics, ICASS 2009 - Hong Kong, Hong Kong Duration: 16 Dec 2009 → 18 Dec 2009

Conference

Conference	6th International Conference on Advances in Steel Structures and Progress in Structural Stability and Dynamics, ICASS 2009
Country/Territory	Hong Kong
City	Hong Kong
Period	16/12/09 → 18/12/09

Keywords

Angles
Buckling
Second-order analysis

ASJC Scopus subject areas

Civil and Structural Engineering
Building and Construction

Cite this

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title = "Second-order analysis and buckling based design of transmission tower without effective length assumptions",

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.",

keywords = "Angles, Buckling, Second-order analysis",

author = "M. Fong and Cho, {S. H.} and Liu, {Y. P.} and Chan, {Siu Lai} and J. Selvanathan",

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pages = "875--882",

booktitle = "ICASS '09/IJSSD - Proceedings of Sixth International Conference on Advances in Steel Structures and Progress in Structural Stability and Dynamics",

note = "6th International Conference on Advances in Steel Structures and Progress in Structural Stability and Dynamics, ICASS 2009 ; Conference date: 16-12-2009 Through 18-12-2009",

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Fong, M, Cho, SH, Liu, YP, Chan, SL & Selvanathan, J 2009, Second-order analysis and buckling based design of transmission tower without effective length assumptions. in ICASS '09/IJSSD - Proceedings of Sixth International Conference on Advances in Steel Structures and Progress in Structural Stability and Dynamics. pp. 875-882, 6th International Conference on Advances in Steel Structures and Progress in Structural Stability and Dynamics, ICASS 2009, Hong Kong, Hong Kong, 16/12/09.

Second-order analysis and buckling based design of transmission tower without effective length assumptions. / Fong, M.; Cho, S. H.; Liu, Y. P. et al.
ICASS '09/IJSSD - Proceedings of Sixth International Conference on Advances in Steel Structures and Progress in Structural Stability and Dynamics. 2009. p. 875-882.

Research output: Chapter in book / Conference proceeding › Conference article published in proceeding or book › Academic research › peer-review

TY - GEN

T1 - Second-order analysis and buckling based design of transmission tower without effective length assumptions

AU - Fong, M.

AU - Cho, S. H.

AU - Liu, Y. P.

AU - Chan, Siu Lai

AU - Selvanathan, J.

PY - 2009/12/1

Y1 - 2009/12/1

N2 - 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.

AB - 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.

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BT - ICASS '09/IJSSD - Proceedings of Sixth International Conference on Advances in Steel Structures and Progress in Structural Stability and Dynamics

T2 - 6th International Conference on Advances in Steel Structures and Progress in Structural Stability and Dynamics, ICASS 2009

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ER -

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

Abstract

Conference

Keywords

ASJC Scopus subject areas

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