The impact of bridge pier on ice jam evolution – an experimental study

Wang, Jun; Hua, Jian; Sui, Jueyi; Wu, Peng; Liu, Tao; Chen, Pang-pang

doi:10.1515/johh-2016-0014

Cited by 14 publications

(3 citation statements)

References 13 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…By contrast, under the ice-jammed conditions, both the scour hole and ice jam deform simultaneously. Since the thickness of ice jam has significant impact on the deformation of scour hole (Wang et al, 2016;Wang et al, 2018), the local scour around bridge piers under the ice-jammed flow condition is inevitably more complex than that occurring under the sheet ice-covered flow condition. Based on the scour hole around the bridge pier under an ice-jammed flow condition, the development of the ice jam can be divided into 3 stages.…”

Section: Observations Of Experimental Runsmentioning

confidence: 99%

Local scour around a bridge pier under ice-jammed flow condition – an experimental study

Wang

Hou

Sun

et al. 2021

Journal of Hydrology and Hydromechanics

Self Cite

View full text Add to dashboard Cite

The appearance of an ice jam in a river crucially distorts local hydrodynamic conditions including water level, flow velocity, riverbed form and local scour processes. Laboratory experiments are used for the first time here to study ice-induced scour processes near a bridge pier. Results show that with an ice sheet cover the scour hole depth around a bridge is increased by about 10% compared to under equivalent open flow conditions. More dramatically, ice-jammed flows induce both greater scour depths and scour variability, with the maximum scour depth under an ice-jammed flow as much as 200% greater than under equivalent open flow conditions. Under an ice-jammed condition, both the maximum depth and length of scour holes around a bridge pier increase with the flow velocity while the maximum scour hole depth increases with ice-jam thickness. Also, quite naturally, the height of the resulting deposition dune downstream of a scour hole responds to flow velocity and ice jam thickness. Using the laboratory data under ice-jammed conditions, predictive relationships are derived between the flow’s Froude number and both the dimensionless maximum scour depth and the dimensionless maximum scour length.

show abstract

Section: Observations Of Experimental Runsmentioning

confidence: 99%

Local scour around a bridge pier under ice-jammed flow condition – an experimental study

Wang

Hou

Sun

et al. 2021

Journal of Hydrology and Hydromechanics

Self Cite

View full text Add to dashboard Cite

show abstract

“…The presence of ice cover has been found to increase local scour depth around bridge piers by 10%-~35% . Also, as pointed out by Wang et al (2015Wang et al ( , 2016, the appearance of bridge piers and abutments in channel has different impacts on ice accumulation under ice cover. Based on experiments in laboratory, Wu et al (2014) claimed that with the increase in ice cover roughness, scour depth bridge around bridge abutments increased, correspondingly.…”

Section: Introductionmentioning

confidence: 99%

Impact of armour layer on the depth of scour hole around side-by-side bridge piers under ice-covered flow condition

Namaee

Sui

2019

Journal of Hydrology and Hydromechanics

Self Cite

View full text Add to dashboard Cite

In the present study, experiments were conducted in a large-scale flume to investigate the issue of local scour around side-by-side bridge piers under both ice-covered and open flow conditions. Three non-uniform sediments were used in this experimental study. Analysis of armour layer in the scour holes around bridge piers was performed to inspect the grain size distribution curves and to study the impact of armour layer on scour depth. Assessments of grain size of deposition ridges at the downstream side of bridge piers have been conducted. Based on data collected in 108 experiments, the independent variables associated with maximum scour depth were assessed. Results indicate that the densi-metric Froude number was the most influential parameter on the maximum scour depth. With the increase in grain size of the armour layer, ice cover roughness and the densimetric Froude number, the maximum scour depth around bridge piers increases correspondingly. Equations have been developed to determine the maximum scour depth around bridge piers under both open flow and ice covered conditions.

show abstract

“…Wang et al [19] studied the stability of an ice jam around a pier and developed an equation for describing an ice jam under an equilibrium condition. By conducting a series of flume experiments, Wang et al [20,21] further studied the stability of an ice jam around a bridge pier and proposed the criteria for the formation of an ice jam around piers. The influence of bridge piers on the evolution of an ice jam was also investigated.…”

Section: Introductionmentioning

confidence: 99%

Impact of Local Scour around a Bridge Pier on Migration of Waved-Shape Accumulation of Ice Particles under an Ice Cover

Hou

Wang

Sui

et al. 2022

Water

Self Cite

View full text Add to dashboard Cite

The migration of a waved-shape accumulation of ice particles under an ice cover (referred to as “ice wave” in this study) is a phenomenon of transport of ice particles during an ice accumulation process in rivers. The migration of an ice wave will affect the pier scour. On the other hand, the local scour at the pier will affect the migration of ice waves. The interaction between the migration of ice waves and local scour around a pier is a very complicated process since not only the channel bed deforms, but also the ice jam develops simultaneously. By conducting a series of flume experiments, the interaction between the local scour around bridge piers and the migration of ice waves was studied. By applying both continuity and momentum equations, an empirical equation has been derived for predicting the thickness of ice waves around the pier. The impacts of the scour hole on the thickness of ice waves around the pier have been studied. The thickness of the wave crest and the migration speed of ice waves have been investigated. Similar to a scour hole in a sand bed, an “ice scour hole” appeared at the bottom of the ice jam around the pier. The existence of the “ice scour hole” affects the development of ice waves. A formula for calculating ice transport capacity has been obtained. Results calculated using the derived formula are in good agreement with those of laboratory experiments.

show abstract

The impact of bridge pier on ice jam evolution – an experimental study

Cited by 14 publications

References 13 publications

Local scour around a bridge pier under ice-jammed flow condition – an experimental study

Local scour around a bridge pier under ice-jammed flow condition – an experimental study

Impact of armour layer on the depth of scour hole around side-by-side bridge piers under ice-covered flow condition

Impact of Local Scour around a Bridge Pier on Migration of Waved-Shape Accumulation of Ice Particles under an Ice Cover

Contact Info

Product

Resources

About