Throughout the lifespan of a bridge, morphological changes in riverbed affect variable action-imposed loads on structure. This emphasizes need for accurate and reliable data that can be used model-based projections targeted identification risk associated with bridge failure induced by scour. The aim this paper is to provide an analysis scour depth estimation large sand-bed rivers under clear wa...

One of the most common problems for river engineers is accumulation waterborne debris upstream bridge piers. In addition to reducing cross-sectional flow area, increases drag force exerted pier and contributes scour. Several studies have been carried out by previous researchers examine usefulness different types countermeasures. The effectiveness these countermeasures not well understood when o...

In this study, a new procedure to determine the optimum dimensions for a rectangular collar to minimize the temporal trend of scouring around a pier model is proposed. Unlike previous methods of predicting collar dimensions around a bridge pier, the proposed approach concerns the selection of different collar dimension sizes around a bridge scour in terms of the flume's upstream (Luc/D), downst...

investigation on local scour phenomenon downstream of impinging jets is very complicated. different parameters such as geometry of stream, characteristics of flow and sediments have great influences on the scour phenomenon. the present study is preceded to numerical modeling of scouring by impinging jet via ssiim 2 model founded on a physical model tests. the numerical model is calibrated for r...

Scour is one of the main causes hydraulic structural failures. The present experimental study examines use riprap, submerged vanes, and a combination these for scour reduction around vertical walls spill-through abutments under clear-water conditions. Specifically, influence placing riprap stones with different apron shapes (geometry) and/or group vanes constant height length on abutment was ex...

Forensic engineering field surveys of recent tsunamis (Saatcioglu et al. 2005, Chock 2013) highlighted the importance scour-related damage to structures located in coastal communities. To date, only a limited number studies have investigated interaction extreme hydrodynamic flows and groups structures, none studied scour around multiple interacting with each other. One example discussed by Yeh ...

Estimating maximum scour depth is normally required in order to determine the depth of  bridge piles. The present paper uses the SSIIM Software which considers flow and sediment equations in a three dimensional manner. The software models flow field around circular bridge pile by resolving Navier-Stokes three-dimensional equations and k-  method, and by temporary solution of flow field and cont...

j1 Christian Chreties MSc Assistant Professor, Instituto de Mecánica de los Fluidos e Ingenierı́a Ambiental (IMFIA), Engineering School, Universidad de la República, Uruguay j2 Luis Teixeira PhD Full Professor, Instituto de Mecánica de los Fluidos e Ingenierı́a Ambiental (IMFIA), Engineering School, Universidad de la República, Uruguay j3 Gonzalo Simarro PhD Associate Researcher, Instituto de Cie...

Incubating salmonid eggs in streambeds are often threatened by deposition of fine sediment within the gravel. To relate sedimentation of spawning gravel beds to sediment transport, infiltration of fine sediment (<2 mm in diameter) into clean gravel beds, bed material size distributions, scour-fill depths, and sediment transport during 10 storm flow events were measured in three streams of north...