Mathematical Theory of Longitudinally Loaded Elastic-Plastic Transmission Lines -- Statics

A complete mathematical model is presented to predict the longitudinal strength of a transmission-line system. This is the first presentation of such a unified model. The static equilibrium of a generalized system subjected to broken wires, unbalanced ice, or longitudinal wind (taken separately or in combination) is determined. Emphasis is given to longitudinal wind and extreme loading conditions requiring structural deflections beyond the elastic limit. Theory is compared to experimental findings, and new results demonstrating design tradeoffs for wind loading and large foundation movements are presented.