Evaluation of Bridge-Scour Research: Abutment and Contraction Scour Processes and Prediction (2011) / Chapter Skim
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9 CONCLUSIONS
9 CONCLUSIONS
Pages 75-77
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From page 75... ...
A particularly common process causing abutment erosion is the lateral migration of the approach channel. The mixing of processes associated with channel migration, the flow field through a bridge waterway, and the flow field at an abutment at times complicates interpretation of field data on abutment scour.
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From page 76... ...
Two conditions may result in embankment failure, while the third condition is pier-like scour at an exposed abutment column once an embankment has failed and been breached. These scour-induced failures differ substantially from those in previous studies of abutments modeled as solid bodies with a solid-wall foundation for the case of sheet-piles or other solid, high strength foundations resistant to erosion; iv.
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From page 77... ...
outlines the well-understood relationships between scour depth and significant parameters, summarized in Table 5-1. Notable examples of recent information include similitude in hydraulic modeling of flow distribution through a contracted bridge waterway, and the importance of flood-plain and embankment soil strengths.
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