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http://dx.doi.org/10.17663/JWR.2018.20.1.014

A Rainfall-runoff Analysis Method of SWMM Model Considering Building Height  

Lee, Hyoungtaek (School of Civil, Environmental and Architectural Engineering, Korea University)
Cho, Eunsaem (School of Civil, Environmental and Architectural Engineering, Korea University)
Yoo, Chulsang (School of Civil, Environmental and Architectural Engineering, Korea University)
Publication Information
Journal of Wetlands Research / v.20, no.1, 2018 , pp. 14-19 More about this Journal
Abstract
In this study, the method considering the influence of the high-rise building in urban rainfall-runoff analysis using SWMM was proposed. The method proposed in this study was to calculate the time of reaching the surface of the rainwater considering the size and height of the building, and to modify the basin width to reflect this. In the method proposed in this study, the concentration time considering the size and height of the building is calculated and based on this time the basin width is modified. The proposed method was verified with the experimental result of Isidoro et al. (2012). As a result, the proposed method was found to be valid since the simulated hydrograph was fairly identical to experimental result. In both hydrographs, it was confirmed that the change of the discharge characteristic, such as decrease of peak discharge and lag of peak time, over increasing density of the building was similar each other.
Keywords
High-rise building; SWMM; Urban basin; Rainfall-Runoff analysis;
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