Author(s): Priscilla Williams, Ram Balachandar, Tirupati Bolisetti
Linked Author(s): Priscilla Williams
Keywords: Bridge pier scour, scour prediction, blockage effects, flow intensity, bridge pier design
Abstract:
Experiments are conducted to investigate the influence of flow intensity (U/Uc, where U is the mean flow velocity and Uc is the critical velocity to initiate sediment motion) on relative scour depth (dse/D, where dse is the maximum value of the equilibrium scour depth and D is the pier diameter). Two sets of 3 tests are carried out at three values of U/Uc for two low values of blockage ratio. It is determined that for the range of flow intensity observed, relative scour depth increased with flow intensity. For tests with values of U/Uc < 1 in both sets, the form of scour is very similar; however, for tests with values of U/Uc = 1.00, there are differences in scour form in both centerline and contour profiles. (2640, 60, 287)
Year: 2017