Local Scour at Single Column Arrangement of Bridge Piles Group

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Okhravi S.S.; GOHARI S.

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Journal: Journal of Water and Soil Science Year:2021 | Volume:24 | Issue:4 Page(s): 57-73

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Title

Local Scour at Single Column Arrangement of Bridge Piles Group

Author(s)

Okhravi S.S. | GOHARI S. | Issue Writer Certificate

Keywords

Local scourQ1

Pile groupQ1

Scour depthQ1

TimeQ2

Piles spacingQ1

Abstract

In regard to wide piers, the Pile group rather than single pile is used frequently to bear the loading of the structure in a particular arrangement; piles group composed of only one column of piles in the flow direction has a great effect on supporting the bridge deck. In this study, Local scour at a single column arrangement of the piles group made up of four rows of piles characterized by different Piles spacing was studied for clear-water conditions with two flow discharges of 20 and 35 l/s (the effect of increasing the flow depth with the same flow intensity). The results indicated that an increase in the flow depth not only greatly enhanced the Scour depth and the width of the scour hole. Besides, the investigation of the relative flow depth on scour extent showed the need for revision in deep water conditions, as reported in the literature. The results of the Pile group experiments revealed the noticeable impacts of Piles spacing on the Local scour. The bigger pile spacing caused a feeble interaction of wake-horseshoe vortices, leading to a decrease of the Scour depth; the separate view of the scour holes was generated at individual piles. Finally, the results were compared with commonly used comprehensive models. The findings of this study can be applied for the appropriate selection and positioning for the countermeasure of the scour at bridge piers...

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APA: Copy

Okhravi, S.S., & GOHARI, S.. (2021). Local Scour at Single Column Arrangement of Bridge Piles Group. WATER AND SOIL SCIENCE (JOURNAL OF SCIENCE AND TECHNOLOGY OF AGRICULTURE AND NATURAL RESOURCES), 24(4 ), 57-73. SID. https://sid.ir/paper/386430/en

Vancouver: Copy

Okhravi S.S., GOHARI S.. Local Scour at Single Column Arrangement of Bridge Piles Group. WATER AND SOIL SCIENCE (JOURNAL OF SCIENCE AND TECHNOLOGY OF AGRICULTURE AND NATURAL RESOURCES)[Internet]. 2021;24(4 ):57-73. Available from: https://sid.ir/paper/386430/en

IEEE: Copy

S.S. Okhravi, and S. GOHARI, “Local Scour at Single Column Arrangement of Bridge Piles Group,” WATER AND SOIL SCIENCE (JOURNAL OF SCIENCE AND TECHNOLOGY OF AGRICULTURE AND NATURAL RESOURCES), vol. 24, no. 4 , pp. 57–73, 2021, [Online]. Available: https://sid.ir/paper/386430/en

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