Experimental Investigation of the Effects of Flow Discharge on the Scour Rate around the Groups of Bridge Piers with a Rough Surface in the Presence of Aggregate Extraction Pits

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DANESHFARAZ R.; Sattariyan Karajabad M.; ALINEJAD B.; Majedi Asl M.

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Journal: Journal of Water and Soil Science Year:2021 | Volume:24 | Issue:4 Page(s): 111-125

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Title

Experimental Investigation of the Effects of Flow Discharge on the Scour Rate around the Groups of Bridge Piers with a Rough Surface in the Presence of Aggregate Extraction Pits

Author(s)

DANESHFARAZ R. | Sattariyan Karajabad M. | ALINEJAD B. | Majedi Asl M. | Issue Writer Certificate

Keywords

Local scourQ1

Bridge piers with rough surfaceQ1

Aggregate extractionQ1

Flow dischargeQ1

Bed profileQ1

Abstract

The scour around the bridge piers is one of the main causes of bridge failure and the extraction of aggregates may aggravate this phenomenon. The present study comprehensively investigated the scour around the groups of bridge piers in the presence of Aggregate extraction pits, using different discharges. The bridge piers roughened by gravel had been compared with the simple bridge piers; so, the results showed that the roughening caused the reduction of the scour depth. Scour depth change rate led to an increase in the equilibrium time. The results also showed that the reduction of the scour depth at the downstream groups of piers was more than that in the upstream. For the lowest discharge, the Aggregate extraction pits had a considerable effect on the scour depth difference for the groups of piers in the downstream and upstream. On the other hand, the effects were decreased when the rate of discharge was increased. The experimental results obtained by the rough surface models showed that as the discharge was increased, the Local scour was increased too; at the same time, the Bed profile was posed at the low level. Generally, the scour depth of the groups of piers in the downstream of the extraction pit was more than that in the upstream. The results of the current research, therefore, demonstrated that the surface of the bridge pier roughened by gravel reduced the scour depth...

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APA: Copy

DANESHFARAZ, R., Sattariyan Karajabad, M., ALINEJAD, B., & Majedi Asl, M.. (2021). Experimental Investigation of the Effects of Flow Discharge on the Scour Rate around the Groups of Bridge Piers with a Rough Surface in the Presence of Aggregate Extraction Pits. WATER AND SOIL SCIENCE (JOURNAL OF SCIENCE AND TECHNOLOGY OF AGRICULTURE AND NATURAL RESOURCES), 24(4 ), 111-125. SID. https://sid.ir/paper/390891/en

Vancouver: Copy

DANESHFARAZ R., Sattariyan Karajabad M., ALINEJAD B., Majedi Asl M.. Experimental Investigation of the Effects of Flow Discharge on the Scour Rate around the Groups of Bridge Piers with a Rough Surface in the Presence of Aggregate Extraction Pits. WATER AND SOIL SCIENCE (JOURNAL OF SCIENCE AND TECHNOLOGY OF AGRICULTURE AND NATURAL RESOURCES)[Internet]. 2021;24(4 ):111-125. Available from: https://sid.ir/paper/390891/en

IEEE: Copy

R. DANESHFARAZ, M. Sattariyan Karajabad, B. ALINEJAD, and M. Majedi Asl, “Experimental Investigation of the Effects of Flow Discharge on the Scour Rate around the Groups of Bridge Piers with a Rough Surface in the Presence of Aggregate Extraction Pits,” WATER AND SOIL SCIENCE (JOURNAL OF SCIENCE AND TECHNOLOGY OF AGRICULTURE AND NATURAL RESOURCES), vol. 24, no. 4 , pp. 111–125, 2021, [Online]. Available: https://sid.ir/paper/390891/en

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