TRANSMISSION TOWER: COMPUTATIONAL MODELING AND ANALYSIS OF THE SIMULATION OF WIND EFFECTS.

Resumo

In Brazil there is a great need for electrical transmission towers, due to its large territorial dimensions,
as well as the great distances between energy production sites and high consumption centers. In this perspective,
the use of this important type of structure tends to be usual. The objective of this work is to perform a graphical
and computational modeling of a self-supporting lattice structure. Then, the aerodynamic analysis of these
structures is carried out simulating the structural effects of random loads due to wind actions. For the transmission
tower model chosen, the finite elements of the truss model were considered, straight, connected by perfect joints.
In the simulation, the towers located in the city of Foz do Iguaçu - PR were considered. From this modeling, the
wind effects produced bending and torsion in the structure, as well as axial forces in the bracing members, which
prevented high horizontal displacements, proving that the adopted model meets the design criteria. It was also
evaluated that the structural failure, in an eventual episode of overload due to wind, should occur by buckling of
internal elements, where the application of structural reinforcements will be proposed.