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http://dx.doi.org/10.3741/JKWRA.2008.41.12.1173

Design of Road Surface Drainage Facilities Based on Varied Flow Analysis  

Ku, Hye-Jin (Global Leaders in Construction Engineering, Dept. of Civil, Envir. and Arch. Engrg., Korea Univ.)
Kim, Jin-Soo (Dept. of Civil and Envir. Engrg., Sungkyunkwan Univ.)
Park, Hyung-Seop (Civil Design Team, Daelim Industrial Co., Ltd.)
Jun, Kyung-Soo (Dept. of Civil and Envir. Engrg., Sungkyunkwan Univ.)
Publication Information
Journal of Korea Water Resources Association / v.41, no.12, 2008 , pp. 1173-1185 More about this Journal
Abstract
The design methods of the road surface drainage facilities were compared for the improvement of design method. We have developed four computational design models classified by the methods to determine the duration of design rainfall and to analyze the flow of a linear drainage channel. The critical duration was determined by assuming the critical duration to be 10 minutes or by finding the duration of design storm being similar to the travel time of flow by trial and error. The flow of a linear drainage channel was analyzed as the uniform flow or the varied flow. The design models were applied to the artificial road surface drainage facilities with various channel slopes and road shoulder slopes. If the rainfall intensity of the 10 minutes duration was applied, the outlet spacing obtained from the design based on the varied flow analysis was larger than the uniform flow analysis only when the channel slope and the road shoulder slope was small. On the other hands, if the duration of design rainfall was determined by calculating the travel time, the varied flow analysis brought about larger outlet spacing than the uniform analysis for all conditions. However, the model of the critical duration concept and the varied flow analysis resulted in smaller outlet spacing than the current design method employing the rainfall of 10 minutes duration and the uniform flow analysis.
Keywords
road surface drainage; linear drainage channel; varied flow; ciritical duration; outlet spacing;
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Times Cited By KSCI : 1  (Citation Analysis)
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