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Author

  • Auel, C. (5)
  • Boes, R.M. (4)
  • Albayrak, I. (3)
  • Sumi, T. (2)
  • Hagemann, M. (1)
  • Oertli, C. (1)

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  • 2015 (5) (remove)

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  • Article in Conference Proceedings (5)

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  • English (5)

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  • Bauingenieurwesen (BAU) (5)

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Saltation-abrasion model for hydraulic structures (2015)
Auel, C. ; Albayrak, I. ; Sumi, T. ; Boes, R.M.
The derivation of an abrasion prediction model for concrete hydraulic structures valid in supercritical flows is presented herein. The state of the art saltation-abrasion model from Sklar and Dietrich (2004) is modified using the findings of a recent research pro-ject on the design and layout of sediment bypass tunnels. The model correlates the im-pacting parameters with the invert material properties by an abrasion coefficient kv. The value of this coefficient is verified by a similarity analysis to bedrock abrasion in river systems applying a correlation between the abrasion rate and the bed material strength. A sensitivity analysis reveals that the saltation-abrasion model is highly dependent on an adequate estimation of kv. However, as a first order estimate the proposed model en-ables the practical engineer to estimate abrasion at hydraulic structures prone to super-critical flows.
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