NUMERICAL STUDY OF NEIGHBORHOOD EFFECTS ON WIND ACTION IN A BUILDING

Resumo

The modernization of civil construction led to the appearance of taller and more slender
buildings. As a result of this new trend, the buildings became more susceptible to the impacts of natural
actions, one of the main being the wind action. ABNT NBR 6123:1988 predicts the efforts generated by
the wind action in the structures according to the location in which it is located. Another way to analyze
the wind action is through the wind tunnel test, which can be replaced by computational simulations.
The present work intends to analyze the wind behavior on the influence of neighborhoods through a
comparison of the results found by ABNT NBR 6123:1988 and by the finite element method. The
analysis aims to study a hypothetical concrete building in isolation and with the insertion of five distinct
neighborhood models on the influence of high turbulence winds. The incidence of wind will be
considered every 30 degree. With the results, the influence of neighborhood in all the directions of wind
incidence was observed, being possible to realize that the values obtained by norm are not appropriate
for all the cases of proposed neighborhoods. In this way, it is necessary to produce more individualized
analyzes for each type of building as well as for each type of environment in which the building may be
inserted.