Cable-stayed towers in transmission lines

Torres estaiadas em linhas de transmissão

Resumo

Electrical energy demand is increasing with development of country where cities become more urbanized. It is necessary more generator plants remaining efficient systems. Many of these plants can not be installed near cities and the importance of lines transmission is a fact. They are important as far as plants, because they are a part of all energy system. All distribution is done to distant sites in an economical way making the minimum of environmental impact. The paper deals with analysis of transmission lines in cable-stayed towers, involving details of the design of a transmission line tower where modeling process of the structure is performed by Tower, an auxiliary software for structural analysis. A good design is a pledge of good functioning of energy distribution. Load tests to evaluate the structures behavior are showed. Recurring faults as wind action, cables rupture, and cascade effect, which cause damage to operation of the line are showed. Optimization methods for structural calculus are suggested. Structural reliability studies in order to improve the design as a whole and avoid future failures are also suggested.