IAHR, founded in 1935, is a worldwide independent member-based organisation of engineers and water specialists working in fields related to the hydro-environmental sciences and their practical application. Activities range from river and maritime hydraulics to water resources development and eco-hydraulics, through to ice engineering, hydroinformatics, and hydraulic machinery.
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| Sediment transport capacity of pressure flow at bridges |
| Author : |
Martin N.R. Jaeggi |
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Pressure flow may occur at bridges, because the bridge cannot be raised above a certain level or because during extreme floods design flood levels are exceeded. A calculation procedure is presented, to assess sediment transport capacity in the bridge section. As in open channel flow, grain friction slope has to be taken as the dominant parameter. A wall drag procedure must be used in the bridge section, in which friction of the ceiling is also considered. By varying the local bed level under the bridge the solution is found by iteration. If pressure flow is considered for a bridge, special attention has to be given to the problem of floating debris.
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| File Size : |
145,363 bytes |
| File Type : |
Adobe Acrobat Document |
| Chapter : |
IAHR World Congress Proceedings
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| Category : |
32nd Congress - Venice (2007)
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| Article : |
THEME A: Engineering and Management of Fresh-water Systems
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| Date Published : |
01/07/2007 |
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