An Experimental Study of the Effect of Piles on Scour Around a Cylindrical Pier

The purpose of this study was to find the relative position of piles to the pier so the maximum reduction of the scour could be obtained. The study was made by using one cylindrical pier. A pile or a cluster of three piles was placed directly in front of the bridge pier to reduce the depth of scour. The centerline of the bridge pier and pile or piles was aligned with the direction of flow. Four flow conditions, with the Froude number ranging from 0. 138 to 0.47, were studied