Results 221 to 230 of about 1,045 (261)
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Evolution of Scour Depth at Circular Bridge Piers
Journal of Hydraulic Engineering, 2004Experiments of bridge pier scour are carried out under steady and unsteady clear-water scour conditions with uniform and nonuniform sediments. Around the pier nose, the sediment size variation of surface bed materials is investigated, and a regressed formula is obtained for estimating the mixing layer thickness in terms of median sediment size and ...
Wen-Yi Chang +2 more
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Temporal Evolution of Clear-Water Scour Depth at Submerged Weirs
Journal of Hydraulic Engineering, 2020AbstractEquilibrium clear-water scour depths predicted by existing equations based on the peak flow rate of a flood hydrograph can be overly conservative for submerged weirs in mild-slope sandy riv...
Lu Wang +3 more
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Temporal Evolution of Clear-Water Pier and Abutment Scour
Journal of Hydraulic Engineering, 2002Scour related to bridge hydraulics received much attention in the past decade, including its relation to flood hydrology and hydraulic processes in addition to steady flow. This paper presents new research on bridge pier and abutment scour based on a large data set collected at ETH Zurich, Switzerland.
OLIVETO, Giuseppe, W. H. HAGER
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Scours Evolution at Bridge Abutments Under Unsteady Flow Events
Iranian Journal of Science and Technology, Transactions of Civil Engineering, 2020Extreme floods become more frequent and is the reason rising load on structures in rivers and the risk to be damaged. The methods of scour calculation at bridge abutments are based on that design flood up to 1% probability (Arneson et al. 2012) accepted by many authors is constant during the maintenance period of the bridge and the equilibrium depth of
Boriss Gjunsburgs +3 more
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Design and characterization of a piezoelectric sensor for monitoring scour hole evolution
SPIE Proceedings, 2014Scour occurring near bridge piers and abutments jeopardizes the stability and safety of overwater bridges. In fact, bridge scour is responsible for a significant portion of overwater bridge failures in the United States and around the world. As a result, numerous methods have been developed for monitoring bridge scour by measuring scour depth at ...
Faezeh Azhari +4 more
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Evolution of Scour and Velocity Fluctuations Due to Turbulence Around Cylinders
2013The study is aimed at investigating the turbulence characteristics in scour geometry developed near a circular cylinder placed over the sand bed transverse to the flow. An obstacle of length 10 cm, placed on a sand bed develops a crescent-shaped scour mark on the bed.
H. Maity, R. Dasgupta, B. S. Mazumder
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Morphological Evolution of Dune-Like Bed Forms Generated by Bridge Scour
Journal of Hydraulic Engineering, 2014This research intends to provide new insights on sediment transport at bridges, exploring the features of migrating dune-like bed forms generated immediately behind piers or abutments by local scour processes. An extended VAW (Laboratory of Hydraulics, Hydrology, and Glaciology, Swiss Federal Institute of Technology Zurich) data set collected from 1999
OLIVETO, Giuseppe, W. H. HAGER
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Real-time Monitoring of Scour and Sedimentation Evolution with a New Developed Prototype Sensor
2014Scour action is one of the main climate change impacts to civil infrastructure due to more frequent and severe flooding incidents. It is the leading cause of bridge failures worldwide and it is expected to occur at most of the hydraulic structures during their service life.
Michalis, P., Judd, M. D., Tarantino, A.
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Time-Evolution of Clear Water Scouring at Dual Bridge Piers
2018Time evolution of the maximum scour depth around piers up to peak value of the design flow is required for safe foundation design of bridges crossing alluvial rivers. This study deals with an experimental work conducted to investigate the surface characteristics of scour-holes around dual piers aligned with the flow direction under clear water ...
Yilmaz, Meriç +2 more
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Scour evolution downstream of grade-control structures under unsteady flows: A theoretical analysis
Journal of Hydro-Environment Research, 2023Fabian Bombardelli +2 more
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