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Optimal Design of Drainage Pipe Considering a Distance of Storm Water Grate Inlet in Road  

Chang, Dong-Eil (고려대학교 공과대학 건축.사회환경공학과)
Lee, Jung-Ho (고려대학교 방재과학기술연구센터)
Jun, Hwan-Don (한밭대학교 토목공학과)
Kim, Joong-Hoon (고려대학교 공과대학 건축.사회환경공학과)
Publication Information
Journal of the Korean Society of Hazard Mitigation / v.8, no.5, 2008 , pp. 53-58 More about this Journal
Abstract
This study presented a design model optimizing a distance of inlet with drainage pipe laid under the gutter in road. When the distance of inlet changed, a basin for the gutter divided by the distance of inlet and the inflow coming into the gutter would be changed. In this case, the change of inlet distance causes the change of a diameter of drainage pipe and slope because of the change of capacity. Therefore, the optimization is needed to design the combination of them for the distance of inlet. Genetic Algorithm is used to determine the optimal combination of them. The conditions of road and the precipitation were assumed like a real and the range of inlet distance adopted $10{\sim}30\;m$ which has been introduced in domestic. This model presented the optimal distance of inlet and the combination of pipe and slope through the minimum cost. The result of the study is that the optimal distance of inlet is different from each slope of road and it can reduce about 20% of total cost for the distance of inlet.
Keywords
Storm water grate inlet; Genetic algorithm; Gutter; Optimal design;
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