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Comparative Study of Slot Shapes Effects on the Scour around Bridge Pier

Journal Name:

  • International Journal of Science and Engineering Investigations

Publication Year:

  • 2017

Key Words:

Author NameUniversity of AuthorFaculty of Author
Abstract (2. Language): 
Scour caused by a decrease in crossing section increases the flux per width unit which all cause rising shear stress in narrowed section. Local scour depth around bridge circular piers located in rivers in uniform sediment and clear water condition has studied in this paper. In order to prevent potential failure of pier and consequently superstructure collapse, a slot in the pier is considered. For the coherent comparison 3 different slot shapes with same areas, however in 3 levels of stream depth were located in pier in current direction and 2 amounts of flow discharge were considered. Entirely 20 scenarios were defined then the results were comprised to find the best answer. Following to the novelty experimental modeling in workshop, the approach of finite volume method, FVM, and ANSYS Fluent software were used to ascertain and solve equations of the issue. The variation of equilibrium scour depth with approached velocities indicates that the decrease at velocity, wider width and shorter height of slot where located near the surface has caused to minimum amount of scour depth.
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REFERENCES

References: 

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