Resumo

AMADOR, MANUEL ALEJANDRO; FERNANDEZ LORENZO, INGRID; LOPEZ LLANUSA, ALEJANDRO  e  PARNAS, VIVIAN BEATRIZ ELENA. Comparative Study of Experimental and Standardized Pressure Coefficients for Industrial Roofs. Ing. Desarro. [online]. 2021, vol.39, n.2, pp.296-314.  Epub 23-Abr-2022. ISSN 0122-3461.  https://doi.org/10.14482/inde.39.2.725.4.

Every year, failures in the roofs of low buildings due to wind action occur. Some researchers believe that these losses could be caused by inadequacies in the regulations for buildings design under this type of loads. This article compares the pressure coefficients of roofs of various low buildings that have been tested, both in wind tunnels and by numerical methods (computational fluid modeling), by various researchers, with the coefficients result from applying the Eurocode EN1991- 1-4 on those structures. The purpose of this investigation is to identify possible discrepancies between the Eurocode EN1991-1-4 and the experimental tests, as a consequence of neglecting the variations in the intensity of turbulence and the roof slope in obtaining the pressure coefficients. From the analysis of results, it was found that the application of Eurocode EN1991-1-4 leads to an underestimation of the wind load in most of the roof, while in the corner corresponding to the leading edge of the wind, the load obtained is greater than that resulting from tests.

Palavras-chave : low structures; roofs; pressure coefficients; wind loads.

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