Results 131 to 140 of about 507 (175)
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Scour at Cylindrical Bridge Piers in Armored Beds
Journal of Hydraulic Engineering, 1985Results of laboratory experiments concerning the development of scour around a cylindrical pier placed in a bed of cohesionless sediment overlain by an armoring layer of coarser sediment are presen...
Arved J. Raudkivi, Robert Ettema
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Bulletin of the Seismological Society of America, 1949
Abstract Effective hydrodynamic masses and mass moments have been calculated for the fluid inside a cylindrical tank and outside a cylindrical pier when the base of the tank or pier experiences an impulsive, horizontal translation. The impulsive velocities set up in the tank have been studied with a view to extending the ...
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Abstract Effective hydrodynamic masses and mass moments have been calculated for the fluid inside a cylindrical tank and outside a cylindrical pier when the base of the tank or pier experiences an impulsive, horizontal translation. The impulsive velocities set up in the tank have been studied with a view to extending the ...
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Influence of suction and collar on reducing local scouring in cylindrical pier
Journal of Applied Water Engineering and Research, 2021Bridges are among the most important structures in river engineering. One of the significant causes of the destruction of bridges is local scouring around the piers.
Ehsan Afaridegan +3 more
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Effect of Viscosity on the Equilibrium Scour Depth at Single Cylindrical Piers
Journal of Hydraulic Engineering, 2016Most studies on scouring seem to have overlooked the effect of viscosity, the assumption being that the flow is free of viscous effects inside the scour hole because of the presence of highly turbulent flow structures such as down-flow, horseshoe vortex, and wake vortices irrespective of the approach flow regime. The present work reports the results of
Lança, Rui +3 more
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The mean characteristics of horseshoe vortex at a cylindrical pier
Journal of Hydraulic Research/De Recherches Hydrauliques, 2003The primary horseshoe vortex formed in front of a cylindrical pier and believed to be the prime agent responsible for scour has been investigated experimentally during the entire process of scouring. A simple and effective method was employed to obtain the time-averaged characteristics of the vortex in terms of parameters relating variables of flow ...
M. Muzzammil, T. Gangadhariah
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Temporal Variation of Scour Depth at Nonuniform Cylindrical Piers
Journal of Hydraulic Engineering, 2011The paper proposes a semiempirical model to estimate the temporal development of scour depth at cylindrical piers with unexposed foundations. A cylindrical pier with a foundation is considered as nonuniform pier. The concept of primary vortex and the principle of volumetric rate of sediment transport are used to develop a methodology to characterize ...
Jau-Yau Lu +4 more
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Live-bed scour around cylindrical bridge piers
Journal of Hydraulic Research, 1992Considering the primary vortex in front of the pier to be the prime agent causing scour at bridge piers, a scheme has been proposed for computation of the temporal variation of scour depth during live-bed condition. An equation has also been developed for the computation of maximum scour depth around circular bridge piers in uniform sediments during ...
U. C. Kothyari +2 more
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Numerical Simulation of Ice Interaction with a Wide Cylindrical Pier
Cold Regions Engineering, 2002A depth-averaged, hybrid Lagrangian-Eulerian model for ice interaction is described, and used to evaluate ice loads on a 10m-wide, cylindrical pier. Additionally, results previously calculated using a discrete element model, and those from analytical formulas commonly used to estimate ice forces, were compared with the full-scale data.
Anne Barker, Mohamed Sayed, Garry Timco
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