Reducing the wind loading on large cantilevered roofs

W. H. Melbourne, J. C.K. Cheung

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Abstract

A 1/100 scale aeroelastic model of a cantilevered roof, over a grandstand, has been tested in a turbulent boundary layer model of the natural wind over suburban terrain, to determine the response of the roof and the effectiveness of a leading edge slot in reducing the response. For the basic cantilevered roof configuration the leading edge displacement was shown to increase with wind speed to a power significantly higher than two, illustrating the wind sensitivity of these structures. Various plain leading edge slot configurations were tested and an optimum configuration determined which showed that a 25% reduction in response could be achieved for a slot width of 5% of the cantilever length. The data have been presented in terms of an equivalent triangular load distribution as a function of reduced velocity for direct design application.

Original languageEnglish
Pages (from-to)401-410
Number of pages10
JournalJournal of Wind Engineering and Industrial Aerodynamics
Volume28
Issue number1-3
DOIs
Publication statusPublished - 1 Jan 1988

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