A revisit of the local scour around bridge piers under an ice-covered flow condition—An experimental study

Wang, Jun; Wang, Kui; Bi-he, Fang; Sui, Jueyi

doi:10.1007/s42241-021-0082-0

Cited by 3 publications

(4 citation statements)

References 18 publications

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“…The ultrasound echo signal display is shown in Figure 3. We located the positioning ruler in the oscilloscope at the starting position of the first and second echoes, read the time between the two echoes, and obtained the propagation speed of the ultrasonic waves in the ice sample through Equation (1).…”

Section: Test Methodsmentioning

confidence: 99%

“…As an important load for hydraulic design in cold regions, ice is prone to expansion and drift due to environmental factors, causing extrusion and impacts on marine platforms and seriously threatening the safety of hydraulic buildings [1][2][3]. Ice also affects marine traffic and shipping, blocking the development of marine resources and the aquaculture industry and causing serious economic losses.…”

Section: Introductionmentioning

confidence: 99%

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Experimental Research on Ice Density Measurement Method Based on Ultrasonic Waves

Chang,

Xue,

et al. 2023

Water

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Ice density is an important physical parameter affecting the mechanical properties of ice. Due to bad field environments, the traditional density measurement method cannot achieve continuous monitoring of ice density. Therefore, the authors of this paper propose a new idea: to use the acoustic characteristics of ice to obtain ice density. The acoustic and physical properties of artificially frozen ice samples, with salinity values in the range of 0~8.5‰, were tested using a nonlinear high-energy ultrasonic testing system to explore the relationships among ice density, sound velocity, temperature, and salinity when the temperatures of the ice samples rose from −30 °C to −5 °C. The test results show that the freshwater ice density decreases from 915.5 kg/m3 to 911.9 kg/m3 when the ice temperature rises from −30 °C to −5 °C. The density of saltwater ice varies from 899.8 kg/m3 to 912.9 kg/m3. When the salinity remains the same, the density of an ice sample decreases with an increase in temperature and increases with an increase in sound velocity. When the ice temperature remains the same, the density of saltwater ice increases with an increase in salinity and decreases with an increase in sound velocity. Based on the test results, a prediction model of ice density with respect to sound velocity, temperature, and salinity is established. The root mean square error between the predicted values of the model and the measured values is 0.337 kg/m3, indicating that the prediction accuracy is high.

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Section: Test Methodsmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Experimental Research on Ice Density Measurement Method Based on Ultrasonic Waves

Chang,

Xue,

et al. 2023

Water

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“…The flow depth (H) and velocity (V) measured at the upstream CS-3 were used to describe the experiment control variables. As suggested by other researchers, Styrofoam panels (manufactured by Jiujiang Boling Trading Co. Ltd., Jiangxi, China) were used to model the ice cover [15][16][17][18][19][20][21][24][25][26].…”

Section: Methodsmentioning

confidence: 99%

“…Additionally, empirical formulas for the scour depth and scour radius were derived for ice-covered flows compared to those in open channel flows. Wang et al [20,21] studied the temporal variation in the scour depth around a cylindrical pier when an ice cover appears on the water surface. Their findings demonstrated that the rate of the pier scour with the appearance of an ice cover on the water surface was greater compared to that in open channel flows.…”

Section: Introductionmentioning

confidence: 99%

Local Scour around Side-by-Side Double Piers in Channel Bends under Ice-Covered Conditions—An Experimental Study

Song

Wang

Zhen-hua

et al. 2023

Water

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The pier scour process is normally intensified in the presence of an ice cover, which poses risks to the longevity and safety of bridges. In the present study, the impact of the densimetric Froude number, locations, and pier spacing of side-by-side piers on the local scour depth under ice-covered flow conditions were investigated based on clear water scour experiments in an S-shaped laboratory flume. The results demonstrated that the local scour at piers along the convex bank was more substantial than that along the concave bank when other factors stayed identical. The densimetric Froude number clearly has more impact on local scour at piers along the convex bank than that along the concave bank. Different from the mechanism of the pier scour in a straight channel, the scour depth around a pier along the convex bank in the S-shaped flume increases as the distance between two piers (or pier spacing) increases, while it decreases around the piers along the concave bank. Similar scour patterns were observed when the side-by-side piers were installed at different bend apex cross-sections. The maximum local scour depths at piers along the convex bank measured at different bend apex cross-sections were relatively unchanged when other influencing factors were held constant. However, the maximum scour depth around piers along the concave bank decreased as the bends increased toward downstream.

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Simulation of ice accumulation around bridge piers during river breakup periods using a discrete element model

et al. 2022

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A revisit of the local scour around bridge piers under an ice-covered flow condition—An experimental study

Cited by 3 publications

References 18 publications

Experimental Research on Ice Density Measurement Method Based on Ultrasonic Waves

Experimental Research on Ice Density Measurement Method Based on Ultrasonic Waves

Local Scour around Side-by-Side Double Piers in Channel Bends under Ice-Covered Conditions—An Experimental Study

Simulation of ice accumulation around bridge piers during river breakup periods using a discrete element model

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