Geobag Performance as Scour Countermeasure for Bridge Abutments

Korkut, Recep; Martinez, Emilio; Morales, Reinaldo; Ettema, Robert; Barkdoll, Brian D.

doi:10.1061/(asce)0733-9429(2007)133:4(431)

Cited by 28 publications

(15 citation statements)

References 2 publications

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“…Neill et al [46] conducted experiments using sandbags to protect the bank from erosion, using a previously developed formulation [5]. In Korkut et al [47] study, Geobag were used to check the stability of the sandbags. To study the protection of the bridge abutment using sandbags, lab experiments were conducted [47], and the size of the bags and ripraps were determined based on methods in Pilarczyk [48] and Richardson and Davis [49].…”

Section: Introductionmentioning

confidence: 99%

Hydraulic Modeling and Evaluation Equations for the Incipient Motion of Sandbags for Levee Breach Closure Operations

Sattar

Bonakdari

Gharabaghi

et al. 2019

Water

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Open channel levees are used extensively in hydraulic and environmental engineering applications to protect the surrounding area from inundation. However, levees may fail to produce an unsteady flow that is inherently three dimensional. Such a failure may lead to a destructive change in morphology of the river channel and valley. To avoid such a situation arising, hydraulic laboratory modeling was performed on an open channel levee breach model capturing velocity, in x, y and z plans, at selected locations in the breach. Sandbags of various shapes and sizes are tested for incipient motion by the breach flow. We found that a prism sandbag has a better hydrodynamic characteristic and more stability than spherical bags with the same weight. Experimental results are then used to evaluate existing empirical equations and to develop more accurate equations for predicting critical flow velocity at the initial stage of sandbag motion. Results showed the superior predictions a few of the equations could be considered with an uncertainty range of ±10%. These equations explained the initial failed attempts of the United States Army Corps of Engineers (USACE) for breach closure of the case study, and confirmed the experimental results are simulating the case study of breach closure.

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Section: Introductionmentioning

confidence: 99%

Hydraulic Modeling and Evaluation Equations for the Incipient Motion of Sandbags for Levee Breach Closure Operations

Sattar

Bonakdari

Gharabaghi

et al. 2019

Water

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“…Guanglu Li's research group applied polypropylene geotextile bags in terraced field ridges and walls and studied the economic benefit, failure mode and stability of this method [7][8][9]. However, the application of soilbags in agricultural drainage channel regulation and in farmland drainage ditch slope reinforcement has not been well studied [10][11][12]. In northwest China, where drainage of excess water in farmland irrigation areas is a common issue, the largest problem comes from seepage deformation caused by the collapse of slope and channel flow resulting from scour and alternating wet-dry and freezingthawing cycles.…”

Section: Introductionmentioning

confidence: 99%

Permeability and stability of soilbags in slope protection structures

Zhou¹,

Wang²,

Wang³

et al. 2018

IJHT

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Farmland drainage ditch slumps restrict recirculation of water resources in the irrigation area of Ningxia in China. To address this problem, soilbags are applied for farmland drainage ditch slope protection, because of their double efficacy in solid slope collapse prevention and water purification. Variations in the mean flow rate, weight of soil passing through the geotextile, and gradient ratio were analyzed based on filtration criteria. Filtration and permeability performance of soilbag technology was studied using a clogging and permeability test, which was performed with gradient ratio and penetration test instruments. Different hydraulic gradients and building structures were tested. The clogging test shows that a rapid increase in the hydraulic gradient can decrease the permeability coefficient of the soil-geotextiles system by 77.99%, lower filtration, reduce soil content per unit area, and increase leakage. The influence of the size of the soilbag (two different sizes were tested) and their arrangement was investigated. Penetration tests demonstrated that an overlapped structure with staggered joints significantly reduced the overall permeability coefficient. With a smaller bag size, the permeability coefficient of structure was larger. The permeability coefficient ratio with different bag arrangements was as high as 90.75%. The results indicate that flow through a soilbag structure is governed solely by the gaps between neighboring containers and that flow through the soil in the containers can be neglected. The arrangement of soilbags thus strongly affects the permeability of the structure. Combining these results with a masonry plan for slope protection in engineering applications with soilbags, the equivalent permeability coefficient of the soilbag slope protection increased 100% and seepage pressure decreased 50%, which effectively improved the stability of the slope protection. These results provide a theoretical basis for further engineering applications.

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“…Among these methods in the study of abutments, we can refer to the use of coarse materials or riprap by Morales, (Ettema and Barkdoll, 2008), joined betty blocks by Przedwojski (1995) and bags containing sand or geo-bag by Korkut et al (2006).…”

Section: Introductionmentioning

confidence: 99%

Simultaneous Effect of Collar and Roughness on Reducing and Controlling the Local Scour around Bridge Abutment

Shahsavari

Heidarpour

Mohammadalizadeh

2017

Acta Univ. Agric. Silvic. Mendelianae Brun.

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Investigation of local scour around hydraulic structures particularly bridges is of crucial importance in river engineering. Bridge destruction mostly occurs as a result of scour phenomenon around piers and abutments, not because of structural weaknesses. Hence, finding a solution to reduce scour depth is momentous. In this study which was conducted in the conditions of clear water scour, the effect of local roughness and collar and also impact of using them simultaneously around bridge abutment were evaluated. The results demonstrated that the existence of roughness causes a reduction in the severity of scouring process and its final depth and the use of collar leads to a delay in the scouring process in addition to the ultimate reduction in the scour depth, which in case of using them simultaneously, scour depth decreases by about 83%.

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Geobag Performance as Scour Countermeasure for Bridge Abutments

Cited by 28 publications

References 2 publications

Hydraulic Modeling and Evaluation Equations for the Incipient Motion of Sandbags for Levee Breach Closure Operations

Hydraulic Modeling and Evaluation Equations for the Incipient Motion of Sandbags for Levee Breach Closure Operations

Permeability and stability of soilbags in slope protection structures

Simultaneous Effect of Collar and Roughness on Reducing and Controlling the Local Scour around Bridge Abutment

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