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Stilling Basin Scour Remediation Using Air Injection And Flat Plate Extension, Rachael Barlock
Stilling Basin Scour Remediation Using Air Injection And Flat Plate Extension, Rachael Barlock
Dissertations, Master's Theses and Master's Reports - Open
The South Florida Water Management District (SFWMD) is responsible for managing over 2500 miles of waterways and hundreds of water control structures. Many of these control structures are experiencing erosion, known as scour, of the sediment downstream of the structure. Laboratory experiments were conducted in order to investigate the effectiveness of two-dimensional air diffusers and plate extensions (without air injection) on a 1/30 scale model of one of SFWMD gated spillway structures, the S65E gated spillway. A literature review examining the results of similar studies was conducted. The experimental design for this research was based off of previous work done …
Countermeasures Against Scour At Bridge Abutments, Hua Li
Countermeasures Against Scour At Bridge Abutments, Hua Li
Dissertations, Master's Theses and Master's Reports - Open
Scour at bridge abutments can cause damage or failure of bridges and result in excessive repairs, loss of accessibility, or even death. To mitigate abutment scour, both clear-water and live-bed laboratory experiments in a compound channel were performed using parallel walls and spur dikes as countermeasures, respectively. In addition, collars were tested under clear-water conditions only. It was found that both parallel walls and spur dikes can efficiently protect the abutment from scour provided that they are properly designed. Design guidelines were discussed for both countermeasures. Preliminary clear-water tests of collars as countermeasures against scour showed some promising results although …