Research Article
May 1973
Transmission Towers under Torsional Loads
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VIEW THE REPLYAbstract
A systematic method for establishing accurate distribution of shears, arising from torsional moments to the faces of four-legged lattice structures is presented. Comparison with empirical rules often used to determine such distributions, particularly in the design of transmission towers, clearly demonstrates that these rules may result in serious underdesign of certain members, or undue overdesign of others, depending upon the structure configuration under consideration. It is also demonstrated that the formulation presented for the torsional shear distribution can be used in conjunction with mathematical programming techniques to simplify the determination of optimum designs for such structures, regardless of the number of degrees-of-freedom.
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Published In
Journal of the Power Division
Volume 99 • Issue 1 • May 1973
Pages: 105 - 123
Copyright
© 1973 American Society of Civil Engineers.
History
Published in print: May 1973
Published online: Feb 11, 2021
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Authors
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Albert W. G. Hanna, AM.ASCE
Struc. Engr., Montreal Engrg. Co., Montreal, Quebec, Canada
Richard G. Redwood
Assoc. Prof. and Chmn., Dept. of Civ. Engrg. and Applied Mech., McGill Univ., Montreal, Quebec, Canada
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