Evaluation of Hydraulic Structure Reliability Considering Uncertainties in Hydrologic Models

by Yeou-Koung Tung, Univ of Wyoming, Laramie, United States,
Bing Zhao, Univ of Wyoming, Laramie, United States,
Jinn-Chuang Yang, Univ of Wyoming, Laramie, United States,



Document Type: Proceeding Paper

Part of: Hydraulic Engineering

Abstract: Uncertainties in a hydrologic model give rise to uncertainty in model outputs which, in turn, can be used for reliability-based design and /or evaluation of hydraulic structures. This paper assessed uncertainties associated with the well-known unit hydrograph (UH) model and incorporate them into the evaluation of overtopping risk and other related measures of a flood detention reservoir. Constrained simulation is employ-ed so that the generated UHs satisfy not only their statistical properties but also its physical definition.

Subject Headings: Hydrologic models | Hydraulic models | Hydraulic structures | Structural models | Uncertainty principles | Structural reliability | Hydraulic design | Hydrographs

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