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http://dx.doi.org/10.5762/KAIS.2018.19.2.71

Experimental Investigation of the Drag Coefficient of Porous Road Signs  

Sung, Hongki (Korea Institute of Civil Engineering and Building Technology)
Chong, Kyusoo (Korea Institute of Civil Engineering and Building Technology)
Publication Information
Journal of the Korea Academia-Industrial cooperation Society / v.19, no.2, 2018 , pp. 71-76 More about this Journal
Abstract
Recently, various technologies have been developed for road facilities to reduce the load, some of which use technologies employing perforated plates for wind load reduction. Currently, there are no regulations concerning the drag coefficient of perforated plates for domestic road facilities. In the United States, the regulations regarding the drag coefficient of perforated plates in the 'Minimum design loads for buildings and other structures' were revised based on the studies of Letchford (2001) and Giannoulis (2012). In this study, a wind tunnel test was carried out to analyze the feasibility of applying regulations involving the perforated plates' drag coefficient. The results of the wind tunnel test and the drag coefficient used in the regulation were compared and analyzed. In addition, the reduction effect of the cross area of road signs calculated by applying the drag coefficient was analyzed. The results of the wind tunnel test and the value of the drag coefficient used in the regulation in the US were found to be very similar. Therefore, it was found that it is possible to apply the formula involving the drag coefficient of the perforated plate to the regulation and that the cross area of the perforated plate used for the post of the road sign is reduced by about 9.45% and that of the horizontal post by about 6.45%.
Keywords
Drag coefficient; Perforated plate; Porosity; Road sign; Wind tunnel test;
Citations & Related Records
Times Cited By KSCI : 1  (Citation Analysis)
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