Research Article
Nov 1970
Static Bending Strain in Stranded Conductor
Authors: James C. Poffenberger and Puran R. MehtaAuthor Affiliations
Publication: Journal of the Structural Division
Volume 96, Issue 11
Abstract
The analytic solution for static bending in stranded conductors is derived for the following cases of conductor supports: (1) Conductors with and without armor rod reinforcement; (2) conventional suspension clamps with bell mouths; and (3) unequal sag angles on either side. Rigorous solutions are reduced to simplified forms for ease of computation. Over a wide range of test conditions, calculated static bending strains are in good agreement with those determined experimentally. Overhead power conductors and other taut cables exposed to wind-induced transverse vibration are susceptible to fatigue failures, particularly at supports. The vibration fatigue life of such cables decreases as the static strain level is increased. The static strain level at a cable support includes three major components: Tension, radial compression; and bending.
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Published In
Journal of the Structural Division
Volume 96 • Issue 11 • November 1970
Pages: 2429 - 2442
Copyright
© 1970 American Society of Civil Engineers.
History
Published in print: Nov 1970
Published online: Feb 1, 2021
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Affiliations
James C. Poffenberger
Vice-Pres., Res. and Engrg., Preformed Line Products Company, Cleveland, Ohia
Puran R. Mehta
Sr. Res. Engr., Res. and Engrg., Preformed Line Products Company, Cleveland, Ohia
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