Secondary Stresses on Transmission Tower Structures
1984; American Society of Civil Engineers; Volume: 110; Issue: 2 Linguagem: Inglês
10.1061/(asce)0733-9402(1984)110
ISSN1943-7897
AutoresSwabarna Roy, Shu‐Jin Fang, Edwin C. Rossow,
Tópico(s)Structural Engineering and Vibration Analysis
ResumoThe power industry is moving toward the use of high‐voltage transmission lines on tall, flexible towers. These towers are designed for heavier loadings than were previous towers, but the secondary effects of tower displacement tend to be ignored in the present day tower analysis. This paper examines the secondary effects from the large displacement of flexible towers, reviews the secondary stresses arising from joint rigidity and member continuity, and examines the reliability of tower strength predicted by the ASCE design guidelines. More realistic tower test acceptance criteria and a more reliable tower design methodology are suggested.
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