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Performance Evaluation of Scour Protection around a Bridge Pier through Experimental Approach

Rashid Farooq ; Department of Civil Engineering, International Islamic University, H-10, Islamabad 44000, Pakistan
Abdul Razzaq Ghumman ; College of Engineering, Civil Engineering Department, Qassim University, Al-Mulida 51431, Saudi Arabia
Muhammad Atiq Ur Rehman Tariq* ; College of Engineering and Science, Victoria University, Melbourne VIC 8001, Victoria, Australia
Afzal Ahmed ; Civil Engineering Department, University of Engineering and Technology, Taxila Khanpur Road, Taxila 47080, Punjab, Pakistan
Abid Latif ; Department of Civil Engineering, Bahauddin Zakariya University, Bosan Road, Multan 60000, Punjab, Pakistan
Amjad Masood ; Global Change Impact Studies Centre, 10-MauveArea, G-8/1, Islamabad 44000, Pakistan

Puni tekst: engleski pdf 1.082 Kb

str. 1975-1982

preuzimanja: 422



Bridge pier scour threatens the stability of bridges. Several approaches practiced counterbalancing the base of piers from scour, but the use of a collar with protection is considered as effective countermeasure. Present study examines the scour around rectangular cross-sectional pier by applying a rectangular hooked collar, under clear water condition. Various dimensions of hooked collar wall height to hooked collar width (Hw/Hwh = 0.05 to 0.30) at the bed level are experimentally tested. To quantify the effectiveness of the scour protection, the result of unprotected rectangular pier is referenced. Similar trend is observed in all the side wall height that by changing the wall height from 0.3Wp scour starts increasing. Likewise, by reducing the width of the hooked collar up to 1.5Wp equilibrium scour depth is observed to be significantly decreased. Further, the laboratory experimental runs showed that width of 1.5Wp along with side wall height of 0.3Wp is the most effective dimension for a hooked collar which may be utilized for rectangular unprotected piers. Lastly, the most suitable configuration reduced almost 52.2% of scouring depth compared to referenced experimental run.

Ključne riječi

countermeasure; experimental rectangular flume; hooked collar; pier scouring

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