Scour under Ice: Potential Contributing Factor in the Schoharie Creek Bridge Collapse

Hains, Decker B.; Zabilansky, Leonard J.

doi:10.1061/40836(210)17

Cited by 3 publications

(5 citation statements)

References 3 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…maximal scour depth of 17 mm. The ice cover had an impact on the extent of erosion sur-rounding the abutment, in line with the findings of Valela et al (2021) [44]. In scenarios characterized by uneven ice cover, the maximum scour depth exhibited greater magnitude compared to scenarios characterized by open channel and uniform ice cover.…”

Section: Local Scour Around Semi-circular Abutment Under Ice-covered ...supporting

confidence: 88%

“…In a manner akin to the experimental setup, the numerical experiment was carried out using an inflow velocity of 0.20 m/s and a consistent water depth of 0.19 m. At Point E, both laboratory experiments and numerical simulations yielded a maximal scour depth of 17 mm. The ice cover had an impact on the extent of erosion surrounding the abutment, in line with the findings of Valela et al ( 2021) [44]. In scenarios characterized by uneven ice cover, the maximum scour depth exhibited greater magnitude compared to scenarios characterized by open channel and uniform ice cover.…”

Section: Local Scour Around Semi-circular Abutment Under Ice-covered ...supporting

confidence: 87%

See 1 more Smart Citation

Numerical Modeling of Local Scour in the Vicinity of Bridge Abutments When Covered with Ice

Namaee,

Wu,

Dziedzic

2023

Water

View full text Add to dashboard Cite

The occurrence of bridge collapse is frequently attributed to the prevalent erosion in the vicinity of bridge abutments. Accurate determination of the maximum scour depth in the vicinity of bridge abutments is imperative to ensure a secure and reliable bridge design. The phenomenon of local scour at bridge abutments can exhibit significant variations when compared to open-flow conditions, primarily due to the additional obstacle posed by the presence of ice cover. Research has demonstrated that the erosion of bridge abutments is more pronounced in the presence of ice. The vertical velocity distribution has a direct impact on both the bed shear stress and the resulting scour geometry in ice-covered conditions. This study aims to analyze the effects of flow through open channels and covered flow conditions on the local scour process around semi-circular and square bridge abutments using FLOW-3D V 11.2 software. The utilization of the volume of fluid (VOF) approach is employed for monitoring the free surface, while the Reynolds averaged Navier-Stokes (RANS) equations and the RNG k turbulence model are employed for simulating the flow field in the vicinity of bridge abutments. The sediment transport equations formulated by Meyer-Peter and Müller were employed for the purpose of simulating the movement of sediment particles. The numerical simulation results are compared with the experimental results. The result shows that the presence of ice cover and its roughness can increase the maximum scour depth both in numerical and experimental studies. The results also indicate that the maximum scour depth is located at the upstream section of the bridge abutments. These findings demonstrate the ability of the numerical model to predict the occurrence of local scour in the vicinity of bridge abutments under conditions of ice presence.

show abstract

Section: Local Scour Around Semi-circular Abutment Under Ice-covered ...supporting

confidence: 88%

Section: Local Scour Around Semi-circular Abutment Under Ice-covered ...supporting

confidence: 87%

Numerical Modeling of Local Scour in the Vicinity of Bridge Abutments When Covered with Ice

Namaee,

Wu,

Dziedzic

2023

Water

View full text Add to dashboard Cite

show abstract

“…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%

“…The local scour process around in-stream infrastructure becomes complicated when an ice cover is present on the water surface. Ackermann et al [15] and Hains and Zabilansky [16,17] studied the scour process around cylindrical piers when an ice cover appears on the water surface and noted that velocity distribution profiles appear in a "parabolic" shape under an ice cover. The presence of an ice cover caused the maximum to be located closer to the bed, along with a steeper velocity gradient near the bed and the associated increased shear stresses along the bed.…”

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

View full text Add to dashboard Cite

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.

show abstract

“…River bed scour was responsible for 165 of the failures and ice was the cause of 10 of the collapses (Wardhana & Hadipriono, 2003). In April of 1987, the Schoharie Creek Bridge in New York collapsed due to sediment scour around the bridge pier (Hains & Zabilansky, 2007). During the collapse 5 vehicles plunged into the river, killing 10 people.…”

Section: Historical Ice Related Disastersmentioning

confidence: 99%

Sediment Transport under Ice Conditions

Hirshfield¹,

Sui²

2011

Sediment Transport

View full text Add to dashboard Cite

Scour under Ice: Potential Contributing Factor in the Schoharie Creek Bridge Collapse

Cited by 3 publications

References 3 publications

Numerical Modeling of Local Scour in the Vicinity of Bridge Abutments When Covered with Ice

Numerical Modeling of Local Scour in the Vicinity of Bridge Abutments When Covered with Ice

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

Sediment Transport under Ice Conditions

Contact Info

Product

Resources

About