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SCIE Article Experimental Analysis of the Scour Pattern Modeling of Scour Depth Around Bridge Piers 


Author  Kim, TaeWoong (Dept Civil & Environm Engn); 
Corresponding Author Info  Ajmal, M (reprint author), Univ Engn & Technol, Dept Agr Engn, Peshawar 25120, Pakistan. 
mujahidkhan@uetpeshawar.edu.pk tufail1@msn.com engr_ajmal@uetpeshawar.edu.pk ziahaq72@gmail.com twkim72@hanyang.ac.kr  
Document Type  Article 
Source  ARABIAN JOURNAL FOR SCIENCE AND ENGINEERING Volume:42 Issue:9 Pages:41114130 Published:2017 
Times Cited  0 
External Information  http://dx.doi.org/10.1007/s1336901725997 
Abstract  Bridge pier scouring measurement in the field, especially during flood season, is very difficult. This study experimentally investigated the pier scour pattern to find better alternatives to represent the actual field conditions. For this purpose, piers of different shapes (circular and square) and different sizes were modeled in the laboratory. The contour maps were drawn to check the extent of possible damage caused by scouring. Under the same laboratory flow conditions and sediment properties, scour depth resulted from squareshaped piers was more evident compared to circular piers and pier geometry. It was also evident that the scour depth increases with an increase in pier size. The contour maps could reflect different flow conditions, sediment, and pier geometry. The scouring process could identify the extent of remedial measures needed. The models developed were regression, artificial neural network (ANN), and genetic function (GF) based, and the results obtained from these models were compared with the experimental data. From the models comparison based on coefficient of determination (, the dimensional variablesbased regression, ANN, and GF models depicted values as 0.38, 0.64, and 0.67, respectively, which were inferior to the corresponding values of 0.80, 0.95, and 0.97 for models developed using nondimensional input variables. Overall, GFbased model performed better than the rest of the models not only because it gave higher values and less measured error but also because it resulted in more simple, compact, and explicit expression for bridge pier scour. 
Web of Science Categories  Multidisciplinary Sciences 
Funding  
Language  English 