Abstract




 
   

IJE TRANSACTIONS B: Applications Vol. 32, No. 2 (February 2019) 212-218    Article in Press

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  EXPERIMENTAL STUDY FOR PROTECTION OF PIERS AGAINST LOCAL SCOUR USING SLOTS
 
nabaa A. Alsultan and S. Khassaf
 
( Received: October 08, 2018 – Accepted: January 03, 2019 )
 
 

Abstract    The most important causes of bridge failure are local scour. In this study, laboratory experiments are investigated the effectiveness of slot as a protection device in reduction of depth of scour at cylindrical piers under clear water flow conditions. The experimental work was performed in a flume with 5.72 m long, 0.61 m wide, 0.2 m deep and zero longitudinal slope. Experiments were conducted for various sizes of slot. The development time of scour depth at the circular pier with and without a slot as a protection device was conducted. It was observed that the scour depth decreases as the size of slot length increases, also the maximum reduction in scour depth equal to 49%. The technique of dimensional analysis was used, and based on laboratory results an empirical formula was derived by using IBM SPSS statistics v24 software according to the coefficient of determination (R² = 0.983), and there was considerable convergence between predicated and observed data.

 

Keywords    Keywords: slot, scour reduction, circular Pier, dimensional analysis.

 

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