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Field Observations and Evaluations of Streambed Scour at Bridges.
| 题名： | Field Observations and Evaluations of Streambed Scour at Bridges. |
| 作者： | MUELLER, D. S.; WAGNER, C. R. |
| 关键词： | *Bridge-piers; *Scouring-; *Stream-beds.;Highway-bridges; Hydrographic-surveys; Floods-; Hydraulics-; Channels-; Peak-discharge; Debris-; Abutment-scour; Rivers-; Contraction-. |
| 摘要： | The variability and complexity of site conditions make it difficult to develop methodology for predicting scour at bridges. Laboratory investigations often oversimplify or ignore many complexities common in the field. The U.S. Geological Survey, in cooperation with the Federal Highway Administration and many State highway agencies, has collected and compiled field data on scour at bridges at 79 sites located in 17 States. These data have been analyzed to isolate pier scour, contraction scour, and abutment scour. The national data base contains 493 local pier scour measurements, 18 contraction scour measurements, and 12 abutment scour measurements. The pier scour measurements were used to evaluate 26 published pier scour equations. |
| 报告类型： | 科技报告 |
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