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Application of a Single Porous Basket as a Pier Scour Countermeasure
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Application of a Single Porous Basket as a Pier Scour Countermeasure
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Application of a Single Porous Basket as a Pier Scour Countermeasure
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Journal Article
Application of a Single Porous Basket as a Pier Scour Countermeasure
2021
Overview
This paper presents a study on bridge pier protection with a single porous basket (SPB) in clear-water experiments. The SPB is a type of combined flow-altering countermeasure. The SPB was installed at a distance ahead of the protected pier. After a series of tests, the results showed that appropriate installation of the SPB was able to effectively adjust the flow pattern to reduce the down-flow motion and horseshoe vortex ahead of the pier. Dominant factors for the pier protection—considered for all tests—included the distance between the basket and pier, submerged depth of the basket, basket length, pier diameter, basket diameter, hole size, porosity, and the flow approaching angle. After evaluating these parameters through laboratory tests, the results of protection were optimized. In optimal conditions, the SPB was able to provide maximum pier protection and decrease the maximum scour depth by as much as 75.53%.
