Pullout test model for extensible reinforcement

Gurung, N.; Iwao, Yushiro; Madhav, Madhira R.

doi:10.1002/(sici)1096-9853(199910)23:12<1337::aid-nag35>3.0.co;2-h

Cited by 9 publications

(4 citation statements)

References 11 publications

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“…Based on the experimental results, they propose methods to predict the state of each zone of the reinforcement at the time of the head tensile-load application. - Gurung et al (1999) express the results of tensile-loaddisplacement along an extensible reinforcement subjected to the pull-out, in the form of a differential equation of a nonlinear hyperbolic behaviour. The modelling results are rather close to the laboratory test results carried out by Sobhi and Wu (1996) and Abramento and Whittle (1995).…”

Section: Introductionmentioning

confidence: 99%

Physical and analytical modelling of geosynthetic strip pull-out behaviour

Abdelouhab

Dias

Freitag³

2010

Geotextiles and Geomembranes

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Section: Introductionmentioning

confidence: 99%

Physical and analytical modelling of geosynthetic strip pull-out behaviour

Abdelouhab

Dias

Freitag³

2010

Geotextiles and Geomembranes

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“…Sobhi et al [ 9 ] proposed an elastic–plastic shear stress–displacement pull-out interface model based on extensible reinforcement; Konami et al [ 10 ] proposed a polymer strip elastic model based on the in-situ geosynthetic pull-out test; and Long et al [ 11 ] used the parabola fitting curve to describe the non-uniform shear distribution of the reinforcement-soil interface. Gurung et al [ 12 ] proposed a finite-difference-based expression to predict the pull-out resistance and reinforcement deformation in the pull-out test of geosynthetics and obtained prediction results that were consistent with the test results. Based on the linear elastic theory and under the same normal pressure, Yuan [ 13 ] proposed that the tensile force was a function of the reinforcement stiffness, the shear stiffness of the reinforcement–soil interface, the embedded length of reinforcement, and the pull-out displacement.…”

Section: Introductionmentioning

confidence: 76%

Analysis of interface mechanical properties between geotextiles and tailings during pull-out tests

Li²,

Fu³

et al. 2022

PLoS ONE

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Considering the strain-softening characteristics of the pull-out interface between geotextiles and tailings; to determine the interface interaction characteristics, this paper proposes a trilinear shear stress displacement softening model of geotextile-reinforced tailings. The obtained nonlinear governing equations were dimensionless, which were expressed in finite difference form. The results indicated that an accurate numerical solution could be obtained within a reasonable calculation time by discretizing the reinforcement length into 300 units. Three new dimensionless interaction terms, namely, the relative stiffness α, relative displacement β, and relative interface shear stiffness η of the reinforcement-tailings interaction, were introduced. In addition, an estimation method based on the approximate value of the relative stiffness α of the reinforcement-soil interface in the low-tensile-force displacement range was proposed. The interface shear stress range according to parameters α, β, and η was parameterized, and the normalization relationship between the tensile force and pull-out end displacement was determined. The numerical values calculated by the model were compared with the pull-out test results, demonstrating that the proposed model can accurately predict the pull-out behavior of the extensible reinforcement.

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“…Long et al [12] used a parabolic fitting curve to describe the nonuniform shear distribution of the interface between the reinforcement and soil. Gurung et al [13] and Misra et al [14] used a hyperbolic model to analyse the relationship between the shear stress and displacement. Gurung [15] simplified the boundary conditions of the anchorage section on the basis of previous studies and obtained the stress and displacement solutions of the anchorage section by fitting the hyperbolic model.…”

Section: Introductionmentioning

confidence: 99%

Analysis of the Elastic-Plastic Theoretical Model of the Pull-Out Interface between Geosynthetics and Tailings

2020

Advances in Civil Engineering

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Aiming at the strain-hardening and strain-softening phenomena between geosynthetics and tailings during pull-out tests, bilinear and trilinear shear stress-displacement softening models were proposed. The pull-out process of the hardening reinforcement was divided into the elastic stage, elastic-hardening transition stage, and pure hardening stage. The pull-out process of the softened reinforcement was divided into the elastic stage, elastic-softening transition stage, pure softening stage, softening-residual transition stage, and pure residual stage. The expressions of the interface tension, shear stress, and displacement at the different stages under a pull-out load were derived through the interface basic control equation. At the same time, the evolution law of the interface shear stress at different pull-out stages was analysed, and the predicted results of the two elastic-plastic models were compared with the experimental results. The results show that the predicted results are in good agreement with the experimental data, which verifies the validity of the proposed two elastic-plastic models for the progressive failure analysis of reinforcement at the pull-out interface. During the process of pull-out, the transition stage is not obvious. When the reinforcement is in the elastic stage, the nonlinearity and maximum value of the interface shear stress increase with an increase in the elastic shear stiffness, while the tensile stiffness shows the opposite trend. When the reinforcement is in the hardening or softening stage, the larger the hardening (softening) shear stiffness is, the larger the change range of shear stress is and the more obvious the hardening (softening) characteristics of the reinforcement are. The results comprehensively reflect the progressive failure of reinforcement-tailing interfaces with different strain types and provide theoretical support for the study of the interface characteristics of geosynthetic-reinforced tailings.

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Pullout test model for extensible reinforcement

Cited by 9 publications

References 11 publications

Physical and analytical modelling of geosynthetic strip pull-out behaviour

Physical and analytical modelling of geosynthetic strip pull-out behaviour

Analysis of interface mechanical properties between geotextiles and tailings during pull-out tests

Analysis of the Elastic-Plastic Theoretical Model of the Pull-Out Interface between Geosynthetics and Tailings

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