Nonlinear load–strain modeling of polypropylene geogrids during constant rate‐of‐strain loading

Ezzein, Fawzy M.; Bathurst, Richard J.; Kongkitkul, Warat

doi:10.1002/pen.23999

Cited by 31 publications

(8 citation statements)

References 35 publications

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“…The tensile strength of the reinforcement used in this study decreases with decreasing rate of loading (Shinoda and Bathurst 2004). However, the analyses in the current study were terminated at end of construction corresponding to predicted and measured tensile loads that were well below tensile strength values corresponding to very low strain rates (Ezzein et al 2015). Hence, the choice of tensile strength based on strain rate was not a concern.…”

Section: Geogrid Constitutive Model and Parameter Valuesmentioning

confidence: 90%

Physical and numerical modelling of a geogrid-reinforced incremental concrete panel retaining wall

Bathurst

Allen

et al. 2016

Can. Geotech. J.

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The paper presents the numerical modelling details using the finite difference method (FDM) to simulate the performance of a well-instrumented geogrid-reinforced incremental concrete panel soil retaining wall. Two different constitutive models were investigated for the backfill soil (linear elastic–plastic model and nonlinear elastic–plastic model). Both constant stiffness and strain-dependent secant stiffness models were used for the reinforcement elements. The paper provides valuable lessons to modellers to simulate the performance of this type of earth retaining structure. For example, parametric investigation of the effect of a constant Young’s modulus ranging from 40 to 120 MPa for the linear-elastic Mohr–Coulomb model had only minor influence on the wall facing displacements and reinforcement loads. However, the choice of magnitude of transient compaction pressure near the facing can result in large differences in facing displacements. The paper also demonstrates that the method of construction including the location, sequence, and stiffness of the temporary supports used to construct the wall plays an important role on measured and predicted wall performance. The physical measurements reported in this paper provide a benchmark for numerical modellers to verify other numerical models for walls of the type investigated here.

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Section: Geogrid Constitutive Model and Parameter Valuesmentioning

confidence: 90%

Physical and numerical modelling of a geogrid-reinforced incremental concrete panel retaining wall

Bathurst

Allen

et al. 2016

Can. Geotech. J.

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“…A regression analysis 46 was performed to quantify the relationship between the morphology parameters and the tensile performance parameters in order to determine the relationship between the geogrid morphology parameters and its maximum tensile strength, elongation at break and maximum modulus of elasticity.…”

Section: Regression Analysismentioning

confidence: 99%

Analysis of tensile properties of geogrids for different morphology parameters

Gao

Zhu

2023

Journal of Thermoplastic Composite Materials

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Following the emergence of new morphology geogrids, tensile tests on some of the new morphology geogrids were conducted in this paper for practical engineering options. The study focuses on the tensile testing of 3D printed geogrids to analyze the effects of morphology differences (material, planar structure, filling rate, rib width and rib height) on the tensile properties of geogrids. The test results show that the tensile properties of high density polyethylene geogrids are stronger than those of polylactic acid geogrids. Increasing the filling rate of geogrid can increase the tensile performance while decreasing the rate of tensile performance improvement. In contrast to the elongation at the break of the geogrid, the maximum tensile strength and the maximum tensile modulus increase in the order of bidirectional, triaxial and quadaxial geogrids. When the rib width and the rib height increase by the same amount, the rib height increases the maximum tensile strength of the geogrid more than that of the rib width.

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“…However, most laboratory tensile test results of geogrids show nonlinear tensile strength behavior, as shown in Figure 5. In addition, it should be noted that the tensile rates have great effects on the tensile behaviour of PP geogrids [41,42].…”

Section: Discrete Element Modeling Of Soilmentioning

confidence: 99%

Investigation progress of geogrid-soil interaction using DEM

Wang

Yang

et al. 2022

IOP Conf. Ser.: Mater. Sci. Eng.

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The discrete element modeling, which has particular advantages of capturing detailed insights into the geogrid–soil interaction, provides a new perspective to study the geogrid reinforcement mechanism especially at a microscopic scale. To summarize the current investigation achievements, discrete element modeling of geogrid and soil as well as their interaction under different testing conditions were reviewed in this paper. The DEM investigations provide not only qualitative visualization of the geogrid–soil interaction but also quantitative response of the geogrid and its surrounding soil. Such investigation achievements provide researchers helpful hints for the design of geogrid reinforced soil structures.

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Nonlinear load–strain modeling of polypropylene geogrids during constant rate‐of‐strain loading

Cited by 31 publications

References 35 publications

Physical and numerical modelling of a geogrid-reinforced incremental concrete panel retaining wall

Physical and numerical modelling of a geogrid-reinforced incremental concrete panel retaining wall

Analysis of tensile properties of geogrids for different morphology parameters

Investigation progress of geogrid-soil interaction using DEM

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