Abstract Riverbed deformation caused by river-crossing bridge construction can be divided into compression scour and local scour. Compared with scour, fewer studies have been made on the piers. It is noteworthy that, lead to riverbed of whole cross section along a site, which obviously detrimental foundation safety. Based summary existing research findings, prediction model for piers constructe...

River dynamics and sediment transport play an important role in river bed morphology. Building a bridge pier along the alters cross-section of causes change flow processes. These changes are mainly responsible for scour. In this paper, usage collars to reduce scour around circular piers has been investigated. The with different diameters depth positions have studied using previous data addition...

The Federal Highway Administration’s Hydraulics Research Laboratory has facilities to physically and numerically model hydraulic and sediment transport phenomena to support State highway administration initiatives. Recent advances in physical modeling instrumentation have facilitated flow visualization to support research. Flow visualization is now performed using the hydrogen bubble technique ...

Abstract Large debris transported by flood affects scour features at bridge piers and increases the risks of structural failure. Geometric characteristics relative position pier with respect to river bank are important parameters for process. The interaction between water flow accumulation shear stress, turbulence consequently enhances depth pier. This paper aims analyzing such effects on evolu...

Abstract The appearance of an ice jam in a river crucially distorts local hydrodynamic conditions including water level, flow velocity, riverbed form and scour processes. Laboratory experiments are used for the first time here to study ice-induced processes near bridge pier. Results show that with sheet cover hole depth around is increased by about 10% compared under equivalent open conditions....

In this work, the performance of reliability methods for probabilistic analysis local scour at a bridge pier is investigated. The one important issues risk assessment and safety evaluation bridges. Typically, depth prediction estimated using deterministic equations, which do not consider uncertainties related to parameters. To these uncertainties, required. recent years, number efficient have b...