Finite-Element Analysis on the Stability of Geotextile Tube–Reinforced Embankments under Scouring

Kim, Hyeong-Joo; Won, Myoung-Soo; Jamin, Jay C.

doi:10.1061/(asce)gm.1943-5622.0000420

Cited by 27 publications

(10 citation statements)

References 8 publications

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“…Therefore, this problem has not received much attention. Most current studies focus on the structural stability of geotube dams, the filtration and dewatering behavior of the material, and the filling process and late-stage deformation characteristics of the tubes [10,12,[22][23][24][25][26][27].…”

Section: Introductionmentioning

confidence: 99%

Horizontal seepage failure model and experimental study of damaged sidewalls of seams between geotube dam tubes

Mao

Shu

et al. 2020

PLoS ONE

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The impact of damaged sidewalls at the joints between tubes on dam structures subjected to horizontal seepage is investigated. First, an experimental scheme is designed to test the mode and critical gradient of seepage failure of the soil in the damaged tubes. The effects of various overburden pressures (0, 5, 10, 20, and 30 kPa), hole radii(0.5, 1.0, 1.5, and 2 cm) and soil specimen properties were studied. The test phenomena and the changes in the pore water pressure were used to determine the seepage failure modes and the critical gradients under different conditions. Combined with the modified Terzaghi soil arching theory, a mathematical model was developed for the critical gradient for soil seepage failure. The model fitting curve was in good agreement with the laboratory test results. The critical gradient is independent of the overburden pressure and weakly dependent on the internal friction angle of the soil. The critical gradient increases with the cohesion. For fixed characteristic soil parameters, the critical gradient decreases at a gradually decreasing rate as the radius of the damaged hole increases.

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Section: Introductionmentioning

confidence: 99%

Horizontal seepage failure model and experimental study of damaged sidewalls of seams between geotube dam tubes

Mao

Shu

et al. 2020

PLoS ONE

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“…Soil reinforcement technology aims to improve the engineering properties of soil to enhance slope, pavement, embankment, and landfill stability (Kim et al 2015). Geosynthetics, such as geogrid, geotextile, geonet, and geocell, are traditional reinforcement materials.…”

Section: Introductionmentioning

confidence: 99%

Application of Jute Fiber in Soil Stabilization

Prasanna¹,

Nm²

2020

Preprint

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This paper is focusing on the stabilisation of soil using jute fibre as soil stabilizer. Stabilisation is the process of modifying the properties of a soil to improve its engineering performance and used it for a variety of engineering works. This study examines the potential of soil stabilization with jute fibre when it is cut into roughly 30mm lengths as stabilizer. The varying percentages like 0.5%, 1%, 1.5 and 2% of pieces of jute fibre were used and mixed it with soil. The laboratory tests such as California Bearing Ratio (CBR) test, modified compaction tests and direct shear strength tests have been conducted to observe the change in engineering properties of soil. On the basis of the experiments performed, it can be concluded that the stabilization of soil using 30mm pieces of jute as stabilizer improves the strength characteristics of the soil so that it becomes usable as one of the reinforcing material for the construction of roadways, parking areas, site development projects, airports and many other situations where sub-soils are not suitable for construction.

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“…The consolidated tailings and geotextiles form composite soils with different strengths. In recent years, geotextile tubes have been widely used in dam construction [7], reinforced embankment [8], land reclamation [9], shoreline management [10] and sludge dewatering [11]. The use of geotextile tubes to construct dams can overcome the difficulties in dam construction due to fine tailings.…”

Section: Introductionmentioning

confidence: 99%

Experimental Studies on Interfacial Shear Characteristics between Polypropylene Woven Fabrics

Zhang³

et al. 2019

Materials

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Geotextile tubes are used in dam construction because fine tailings are difficult to use. The shear characteristics of geotextile tubes during dam operation are closely related to those of the materials used to construct the tubes. Pull-out tests can accurately reflect the interfacial shear characteristics between geosynthetics in practice, so pull-out tests were carried out for different interfacial types of polypropylene woven fabrics under dry and wet states. The effects of the type of interface and dry-wet states on the interfacial shear characteristics were investigated, and the impact mechanisms were also discussed. The results indicated that P-type interfaces (the warp yarn on the interface is parallel to the pulling direction) tended to harden. However, PTP-type (the warp yarn on the interface is perpendicular to each other) and T-type (the weft yarn on the interface is parallel to the pulling direction) interfaces softened first and then tended to plateau after reaching peak shear stress, and softening became more obvious at higher normal stresses. The displacement corresponding to peak shear stress (referred to as “peak displacement” in this paper) of interfaces was positively correlated with the normal stress, and the wet state reduced the interfacial peak displacement. For different types of interfaces, the peak displacement of the T-type interface was the largest, followed by PTP-type and P-type. Interfacial shear characteristics conformed to Mohr–Coulomb strength theory and, compared with quasi-cohesion values ranging from 1.334 to 3.606 kPa, the quasi-friction angle significantly contributed to the interfacial shear strength. The quasi-friction angle of the interface was composed of a sliding friction angle and an occlusal friction angle. The shear strength of the interface was more sensitive to the interface types than whether they were in the dry or wet state. For different types of interfaces and dry-wet states, the change in the interfacial shear strength is respectively affected by the occlusal friction angle and the sliding friction angle on the interface.

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Finite-Element Analysis on the Stability of Geotextile Tube–Reinforced Embankments under Scouring

Cited by 27 publications

References 8 publications

Horizontal seepage failure model and experimental study of damaged sidewalls of seams between geotube dam tubes

Horizontal seepage failure model and experimental study of damaged sidewalls of seams between geotube dam tubes

Application of Jute Fiber in Soil Stabilization

Experimental Studies on Interfacial Shear Characteristics between Polypropylene Woven Fabrics

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