Clear-water scour at submerged pile groups
| Autor: | Galán, Álvaro, Simarro, Gonzalo, Fael, Cristina Maria Sena, Cardoso, António Heleno |
|---|---|
| Přispěvatelé: | uBibliorum |
| Rok vydání: | 2018 |
| Předmět: |
Laboratory studies
Habitat hydraulics River engineering Erosion processes 010504 meteorology & atmospheric sciences 0208 environmental biotechnology Flow (psychology) 02 engineering and technology Bridges 01 natural sciences Skew angle 020801 environmental engineering Range (statistics) Geotechnical engineering Pile Geology River training structures 0105 earth and related environmental sciences Water Science and Technology |
| Zdroj: | Repositório Científico de Acesso Aberto de Portugal (Repositórios Cientìficos) Agência para a Sociedade do Conhecimento (UMIC)-FCT-Sociedade da Informação instacron:RCAAP Digital.CSIC. Repositorio Institucional del CSIC instname |
| ISSN: | 1814-2060 1571-5124 |
| Popis: | 8 pages, 8 figures, 2 tables Accurate estimates of the scour depth around submerged pile groups are important in river engineering for a number of reasons, however, the literature on this issue is scarce. This study introduced an experimental campaign of 48 long-duration clear water experiments at submerged and skewed pile groups composed of cylindrical elements under steady flow. The effects of the skew angle, submergence ratio and pile group configuration on the equilibrium scour depth were investigated. The experimental scour depths were compared with the results from the HEC-18 empirical method and a modification of it to take into account a wide range of submergence ratios was proposed. Further, a new formulation to estimate the equilibrium scour depth at submerged pile groups was introduced with good agreement for the tests under consideration. Some considerations about the most employed characteristic lengths used to normalize the equilibrium scour depth were made |
| Databáze: | OpenAIRE |
| Externí odkaz: |
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