Influência do efeito de vizinhança nas solicitações devido à ação do vento : estudo comparativo segundo normativa técnica e simulação fluidodinâmica computacional.

Abstract

This work consists in the study of the influence of the neighborhood effect on the efforts of the wind action in buildings through the comparative study between technical normative and computational fluid dynamics simulations. The analysis guidelines developed in this work consist of the proposition of neighborhood models and validation of the computational simulation model through the comparison with wind tunnel data for a standard building (CAARC Standard Tall Building). The solution developed addresses the comparison between the efforts estimated according to the Brazilian norm (NBR 6123:1988) and obtained through numerical simulation as a reason of the wind incidence on two configurations: one with the building isolated and another with the presence of the proposed neighborhoods. The comparative analysis of the results presented an average reduction of 30% of the efforts of the numerical model in relation to those estimated through the Brazilian norm. In addition, when considering the influence of the positioning of neighboring buildings, the fluid dynamics simulations indicated a tendency of reduction of the efforts with the spacing of these buildings.