首页> 美国政府科技报告 >Effects of Gradation and Cohesion on Bridge Scour. Volume 2. Experimental Study211 of Sediment Gradation and Flow Hydrograph Effects on Clear Water Scour Around 211 Circular Piers
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Effects of Gradation and Cohesion on Bridge Scour. Volume 2. Experimental Study211 of Sediment Gradation and Flow Hydrograph Effects on Clear Water Scour Around 211 Circular Piers

机译:分级和内聚力对桥梁冲刷的影响。第2卷。沉积物级配和流量水文对211环形码头清水冲刷影响的实验研究211

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In the second part of the experiment study, effects of how flow hydrograph is211u001einvestigated by subjecting circular piers used in the first part to bursts of 211u001edischarges of varying duration and rate of increase. It is found that up to 60 211u001epercent of ultimate scour could be attained in short duration events for rapidly 211u001eincreasing flow conditions. Results are expressed in the form of a regression 211u001eexpression using one of the test cases as the normalizing event.

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