Mitigation of Scour Failure Risk of a River Bridge Located in an Ungauged Basin
| Autor: | Hüseyin Akay |
|---|---|
| Přispěvatelé: | Scientific and Technological Research Council of Turkey |
| Rok vydání: | 2021 |
| Předmět: |
Risk analysis
Watershed lcsh:TE1-450 hyrisk western black sea basin 0208 environmental biotechnology Hydrograph 02 engineering and technology 010501 environmental sciences 01 natural sciences Bridge (interpersonal) lcsh:TG1-470 lcsh:Bridge engineering GIUH HYRISK scour criticality ungauged basin waterway adequacy Western Black Sea Basin lcsh:Highway engineering. Roads and pavements Risk management 0105 earth and related environmental sciences Civil and Structural Engineering Hydrology Flood myth business.industry Building and Construction 020801 environmental engineering Constructability Environmental science giuh business Riprap |
| Zdroj: | The Baltic Journal of Road and Bridge Engineering; Vol 16, No 1 (2021): The Baltic Journal of Road and Bridge Engineering; 37-56 The Baltic Journal of Road and Bridge Engineering, Vol 16, Iss 1, Pp 37-56 (2021) |
| ISSN: | 1822-4288 1822-427X |
| Popis: | © 2021 The Author(s). Published by RTU Press.In this study, scour failure risk of the Çatalzeytin Bridge located in the Western Black Sea Basin, Turkey, was assessed for possible future flood events and appropriate scour countermeasures were considered based on economic and constructability considerations. Waterway adequacy in the spans of the bridge and scour criticality around bridge foundations considered for risk calculations in HYRISK were estimated by hydrological and hydraulic analyses of the watershed and stream. Since the watershed of the bridge is ungauged, geomorphological instantaneous unit hydrograph concept was adopted to estimate the peak discharges with various return periods to be used in hydraulic modelling. Monte Carlo simulation results indicated that most of the simulated peak discharges were in the 95% confidence interval. Hydraulic model results from HECRAS indicated that waterway adequacy and scour criticality were critical for discharges with 200 and 500-year return periods. Scour failure risk of the Çatalzeytin Bridge was classified as high and it was proposed to reduce the risk by constructing partially grouted riprap as the most feasible alternative that would consequently increase the expected lifespan of the bridge. Following this methodology, river bridges may be prioritized based on the risk analysis. |
| Databáze: | OpenAIRE |
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