Centrifuge Tests of Geocell-Reinforced Retaining Walls at Limit Equilibrium

Song, Fei; Liu, Huitao; Hu, Hongbing; Xie, Yingchao

doi:10.1061/(asce)gt.1943-5606.0001849

Cited by 35 publications

(5 citation statements)

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“…Geosynthetic reinforced walls have been widely used in the past few decades given their good performance in terms of the ductility of structures (EI-Emam and Bathurst 2007;Murali Krishna and Madhavi Latha 2007;Panah et al, 2015;Yazdandoust 2017;Song et al, 2018;Huang 2019;Fan et al, 2020;Xu et al, 2020). To examine the influence of reinforcement parameters (i.e., the length, stiffness, and vertical spacing) on wall design, El-Emam and Bathurst (2007) performed model tests with rigid facing slabs.…”

Section: Introductionmentioning

confidence: 99%

Shaking table tests on gravel slopes reinforced by concrete canvas

Ding

Zhou

Wang

et al. 2020

Geotextiles and Geomembranes

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Section: Introductionmentioning

confidence: 99%

Shaking table tests on gravel slopes reinforced by concrete canvas

Ding

Zhou

Wang

et al. 2020

Geotextiles and Geomembranes

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“…An analytical approach for predicting the stress-strain relationship of the geocell-soil composite was developed by Song et al (2020Song et al ( , 2022 [15,16] and its effectiveness and reliability were validated via triaxial compression tests of geocell-reinforced soil. Laboratory-scale model tests, centrifuge model tests, limit equilibrium analysis, numerical simulation, and field monitoring were conducted by Chen and Chiu (2008) [17], Xie and Yang (2009) [18], Chen et al (2013b) [19], and Song et al (2014Song et al ( , 2017Song et al ( , 2018aSong et al ( , 2018bSong et al ( and 2019b [20][21][22][23][24] to investigate the deformation characteristic, the failure mechanism of geocell-reinforced retaining walls, and the influencing factors. Geocells were used as a buffer system behind the conventional rigid retaining wall by Kurihashi et al (2020) [25] to reduce the impact of rockfall, and they discovered that it performed better than sand in this capacity.…”

Section: Introductionmentioning

confidence: 99%

Stability Analysis of Retaining Walls with Geocell-Reinforced Road Milling Materials

Zhang

Song

2023

Sustainability

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A series of triaxial compression tests with different confining pressures were conducted for gravels, road surface milling materials, and surface–base milling mixtures to investigate the stress–strain relationships of these three kinds of materials. On the basis of the analysis of the test results, the strength and the deformation of the geocell-reinforced surface milling materials and the geocell-encased surface–base milling mixtures were predicted and compared with those of the gravels via the constitutive model of geocell–soil composites. The effects of the geocell pocket size, tensile stiffness, and the peak internal frictional angle on the stress–strain responses of the geocell-reinforced surface–base milling mixtures were examined. Moreover, by employing the finite element strength reduction technique, stability analysis was conducted on the geocell-reinforced retaining wall with the surface–base milling mixtures to investigate the factor of safety and the failure mechanism of the structure. The study results indicated that the surface milling materials exhibited strain hardening, while the gravels and the surface–base milling mixtures exhibited strain softening. The surface milling materials displayed evident shear contraction characteristics, whereas the gravels and surface–base milling mixtures first displayed shear contraction and later dilatancy features. In addition, the strength of the geocell-reinforced surface milling materials is smaller than that of the gravels, but the strength of the geocell-encased surface–base milling mixtures is larger than that of the gravels. Thus, the geocell-reinforced surface–base milling mixtures can be used to replace the gravels in engineering practices. Additionally, the size of the sliding wedge and the factor of safety of the retaining walls increase significantly with reductions in the geocell pocket size.

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“…Many researchers in the past have evaluated the performance of geocell by considering various aspects such as different infill materials, aspect ratio, material fabrics, surface deformation, load-carrying capacity, etc. (Biswas et al, 2013;Biswas et al, 2016;Dash et al, 2001Dash et al, , 2003Dash et al, , 2007Mandal and Gupta, 1994, Song et al, 2018, Venkateswarlu and Hegde, 2019, Gedela and Rajagopal, 2021. Hegde and Sitharam, (2014) developed the analytical model using the thin-walled cylinder theory to predict the strain induced in the geocell by different infill materials and found an overestimation of the experimental results of instrumented geocells.…”

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confidence: 99%

Geocell Reinforced Flexible Pavement: Analysis of Strain Induced in Geocell vis-a-vis Thin and Thick-walled Cylinder Theory

Shrirao,

Kulkarni,

Bhosale

2023

IJSCET

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Vertical pressure from vehicles on pavement reinforced with geocell develops radial and hoop stresses on geocell walls. Thin-walled cylinder theory is used to estimate the strain induced in geocell by some researchers. It is observed that thin-walled cylinder theory significantly overestimates induced strain when compared with experimental values. This paper presents non-accounted effect of lateral resistance mobilized due to geocell infill soil in computing strain by thin-walled cylinder theory. It is observed that computed strain values using thin-walled cylinder theory accounting lateral resistance match well with experimental results reported in literature. Equivalent thickness (teq) of geocell is then back-calculated by matching the experimental strain values with computed strain values using thin-walled cylinder theory accounting lateral resistance. As the thickness of geocell increases in the form of teq,thick-walled cylinder theory is also studied to analyze the strain induced in the geocell. Combined analysis is then carried out by modifying thick-walled cylinder theory equations using teqderived from thin-walled cylinder theory, and new factor named merging factor (M.F.) is introduced. Results of thick-walled cylinder theory with M.F. match well with experimental strain values reported in literature. Strain computed using modified thin-walled cylinder theory is validated with laboratory results of other researchers.

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Centrifuge Tests of Geocell-Reinforced Retaining Walls at Limit Equilibrium

Cited by 35 publications

References 50 publications

Shaking table tests on gravel slopes reinforced by concrete canvas

Shaking table tests on gravel slopes reinforced by concrete canvas

Stability Analysis of Retaining Walls with Geocell-Reinforced Road Milling Materials

Geocell Reinforced Flexible Pavement: Analysis of Strain Induced in Geocell vis-a-vis Thin and Thick-walled Cylinder Theory

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