Numerical analysis of a mechanically stabilized earth wall reinforced with steel strips

Yu, Yan; Bathurst, Richard J.; Miyata, Yoshihisa

doi:10.1016/j.sandf.2015.04.006

Cited by 68 publications

(27 citation statements)

References 21 publications

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“…These down-drag loads become greater when the toe of the wall moves further outward during postconstruction foundation bulkhead release. Elevated tensile loads close to the back of the facing in steel strip reinforced soil walls and tapering off with distance towards the free end of the reinforcing elements have been reported for instrumented field walls of this type and in numerical simulations of the same structures (Damians et al, 2015;Yu et al, 2015). The decrease in tensile load with distance from the facing, which is detectable in most layers at large bulkhead displacement in Figures S2 and S3, is consistent with the notion of tensile load shedding from the steel strip inclusions to the surrounding soil.…”

Section: Resultsmentioning

confidence: 91%

Stability of steel reinforced soil walls after footing failure

Bathurst¹,

Miyata²,

Otani³

et al. 2016

Proceedings of the Institution of Civil Engineers - Geotechnica

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Two nominal identical 4 m high steel strip reinforced soil walls varying only with respect to reinforcement layer length arrangement were constructed and instrumented in an indoor laboratory environment. A novel feature of the tests was a foundation arrangement that allowed for simulated loss of toe support. Both walls performed well at the end of construction (EOC). Predicted unfactored maximum reinforcement tensile loads at the EOC using four different load models were judged to be conservative (safe for design) based on comparison with measured loads for both walls. Reinforcement loads were observed to increase with decreasing toe support, particularly at the base of the walls. A fully developed composite soil failure mechanism propagating from the heel of the foundation bulkhead and behind the reinforcement layers was observed during excavation of the stepped base wall model. There were no visual indications of soil failure within or behind the wall with longer uniform reinforcement lengths. However, predicted EOC loads for this wall were exceeded for most layers after loss of toe support. Implications for the design, analysis and performance of steel strip reinforced soil walls with similar reinforcement arrangements constructed over initially competent soil foundations and then subject to loss of toe support are identified.

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Section: Resultsmentioning

confidence: 91%

Stability of steel reinforced soil walls after footing failure

Bathurst¹,

Miyata²,

Otani³

et al. 2016

Proceedings of the Institution of Civil Engineers - Geotechnica

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“…A constant value of Ri = 0.67 was assumed [24]. The shear stiffness, normal stiffness, and friction angle of this interface are presented in Table 3.…”

Section: Concrete Panel/soil Interfacementioning

confidence: 99%

Numerical Study of the Behavior of Back-to-Back Mechanically Stabilized Earth Walls

2021

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Back-to-back mechanically stabilized earth (MSE) walls can sustain significant loadings and deformations due to the interaction mechanisms which occur between the backfill material and reinforcement elements. These walls are commonly used in embankments approaching bridges, ramps, and railways. The performance of a reinforced wall depends on numerous factors, including those defining the soil, the reinforcement, and the soil/reinforcement interaction behavior. The focus of this study is to investigate the behavior of back-to-back mechanically stabilized earth walls considering synthetic and metallic strips. A two-dimensional finite difference numerical modeling is considered. The role of the soil friction angle, the distance of the reinforcement elements, the walls’ width to height ratio, and the quality of the soil material are investigated in a parametric study. Their effects on the critical failure surface, shear displacements, wall displacements, and tensile forces on the reinforcements are presented. The interaction between back-to-back reinforced walls strongly depends on the distance between walls and modifies the critical failure surface location.

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“…H-V reinforcement can be defined as horizontal strip reinforcement strengthened with vertical partial plates to improve of its load bearing capacity. Yu et al [35] defined the effects of interface stiffness, soil modulus and foundation modulus parameters on the steel strip reinforced earth walls due to linear elastic Mohr Coulomb constitutive model. Carbone et al [36] proposed a new inclined plane test procedure both static and dynamic conditions for interaction between soil and geosynthetic reinforcements.…”

Section: Previous Studiesmentioning

confidence: 99%

Geotekstil, Geogrid ve Çelik Şerit Donatılı Şevlerde Modelleme Çalışması

Evirgen¹,

Tuncan²,

Tuncan³

2017

Çukurova Üniversitesi Mühendislik-Mimarlık Fakültesi Dergisi

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Changing the natural conditions of soil creates unexpected stress increments in slope stability projects, which are required high amount of soil excavation near the highways and railways or braced cut systems. Some safety problems can occur during this application under different loading cases. In addition, slope stability design requires economical solutions. Slope-supporting structures should be designed with most effective solution according to these signified requirements. A slope stability problem considering deep excavations in front of the reinforced soils are studied within this study in all its parts, after an extensive review of the literature. Geotextile (GT), geogrid (GG) and steel strip (SS) reinforcements are used to increase the stability conditions of slope during both experimental procedure and modelling process with Plaxis software. Each reinforcement type provided the bearing capacity enhancement and showed that unique displacement behavior. Therefore, most effective reinforcement member can be chosen in design procedure and construction phase in the site according to the bearing capacity and displacement requirements according to presented values.

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Numerical analysis of a mechanically stabilized earth wall reinforced with steel strips

Cited by 68 publications

References 21 publications

Stability of steel reinforced soil walls after footing failure

Stability of steel reinforced soil walls after footing failure

Numerical Study of the Behavior of Back-to-Back Mechanically Stabilized Earth Walls

Geotekstil, Geogrid ve Çelik Şerit Donatılı Şevlerde Modelleme Çalışması

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