Reducing the local Scour around Bridge Piers by Using Semi-conical Piers.
El Alfy, K., Shamaa, M., Al-tameemi, H. (2020). Reducing the local Scour around Bridge Piers by Using Semi-conical Piers.. EKB Journal Management System, 42(2), 10-19. doi: 10.21608/bfemu.2020.90310
Kasem Salah Abd El Wahab El Alfy; Mohamed Tarek Shamaa; Haider Hasan Al-tameemi. "Reducing the local Scour around Bridge Piers by Using Semi-conical Piers.". EKB Journal Management System, 42, 2, 2020, 10-19. doi: 10.21608/bfemu.2020.90310
El Alfy, K., Shamaa, M., Al-tameemi, H. (2020). 'Reducing the local Scour around Bridge Piers by Using Semi-conical Piers.', EKB Journal Management System, 42(2), pp. 10-19. doi: 10.21608/bfemu.2020.90310
El Alfy, K., Shamaa, M., Al-tameemi, H. Reducing the local Scour around Bridge Piers by Using Semi-conical Piers.. EKB Journal Management System, 2020; 42(2): 10-19. doi: 10.21608/bfemu.2020.90310

Reducing the local Scour around Bridge Piers by Using Semi-conical Piers.

MEJ- Mansoura Engineering Journal
Article 13, Volume 42, Issue 2, June 2017, Page 10-19  XML PDF (875.37 K)
Document Type: Research Studies
DOI: 10.21608/bfemu.2020.90310
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Authors
Kasem Salah Abd El Wahab El Alfy1; Mohamed Tarek Shamaa2; Haider Hasan Al-tameemi email
1Prof. of Hydraulics, Mansoura University, Dean of Mansoura High Institute of Eng. And Technology
2Associ. Prof. of Hydraulics, Mansoura University, Irrigation and Hydraulics Dept
Abstract
The main aim of this study is to find a practical shape of bridge pier being a local scour countermeasure. Therefore, the semi-conical piers have been selected to make their usage applicable in the field. These piers have small side slope angles and rectangular cross-section. Also, the secondary aim is to increase the efficiency of the above countermeasure. So, the first experimental set has been performed using a vertical cylindrical pier (its side slope angle = 0) and three semi-conical piers with different side slope angles (2.860, 5.70 & 8.50). The results show that increasing the side slope angle leads to increase the Reduction Percentage of Scour Depth and Volume (RPSDV). The values of RPSDV are (18.33, 21.66, 25) & (40.2, 54.9, 60), respectively. Also, the second set has been done and consists of the three semi-conical piers that their leading edge are integrated or modified with devices. These devices are: openings, up-stream ladder, and curved face. The values of RPSDV are improved using these devices compared with the semi-conical pier without device. The RPSDV are (3.3, 26.7, 37.8) & (1, 53, 68), respectively.
Keywords
Bridge; Scour depth; Clear water; Scour reduction; Cone shaped pier; Countermeasure
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