Experimental study of behaviour of circular footing on geogrid-reinforced sand

Useche-Infante, Danny; Martínez, Gonzalo Aiassa; Arrúa, Pedro A.; Eberhardt, Marcelo

doi:10.1080/17486025.2019.1683621

Cited by 30 publications

(10 citation statements)

References 33 publications

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“…Similar results were found in [31], where there is no increase in soil carrying capacity that exceeded u/d>0.75. Hence, the optimal value of the depth ratio was obtained when the reinforcement was placed at u/d equal to 0.42 in both systems.…”

Section: A Effect Of Reinforcement's Top Spacingsupporting

confidence: 85%

“…An experimental study was conducted in [30] to assess the influence of the geogrid extension and embedment depth below strip footing rested on fine loose sand. In [31], a regression model was developed to determine the bearing capacity of a circular foundation supported on sand reinforced with geogrid. The results showed that the parameters studied had a significant influence on the performance of the footing in terms of bearing capacity.…”

Section: Introductionmentioning

confidence: 99%

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Behavior of a Circular Footing resting on Sand Reinforced with Geogrid and Grid Anchors

Helis

Mansouri

Abbèche

2023

Eng. Technol. Appl. Sci. Res.

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This study used finite element analysis to investigate the influence of using two reinforcing systems, the geogrid and the grid anchor, on the bearing capacity of a circular footing resting on sand. The parameters studied were the effect of the number of reinforcement layers (N), the depth ratio of the topmost layer of reinforcement (u/d), the vertical spacing ratio between consecutive layers (h/d), and the effect of reinforcement length (L). The results showed that the reinforcement layout had a very significant effect on the behavior of the reinforced sand foundation. The maximum bearing capacity for single-layer inclusion was obtained when reinforcement was placed at a depth of u/d=0.42. Bearing capacity was also found to improve when increasing the number of reinforcement layers from 1 to 3. Additionally, the analysis showed that the sand reinforced by grid anchors performed better than that reinforced by geogrid. Finally, an improvement in load capacity was obtained by increasing the length of the inclusions, and the optimal length of the reinforcements was determined at 5d for both inclusions.

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Section: A Effect Of Reinforcement's Top Spacingsupporting

confidence: 85%

Section: Introductionmentioning

confidence: 99%

Behavior of a Circular Footing resting on Sand Reinforced with Geogrid and Grid Anchors

Helis

Mansouri

Abbèche

2023

Eng. Technol. Appl. Sci. Res.

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“…Das and Omar [46] performed model tests on strip footing resting on the geogrid-reinforced sand bed and found that the BCR decreases with the increase of relative density. However, Useche-Infante et al [53] reported that the BCR increases with the increase of relative density based on the loading tests on circular footing. This is consistent with the finding by Durga-Prasad et al [62] based on the plate load tests on georgrid-reinforced foundation under square footing.…”

Section: Reduced Model Testsmentioning

confidence: 98%

“…The difference is attributed to the better interlocking between soil particles and geogrid. In addition, the biaxial geogrid is better than uniaxial geogrid to enhance the performance of soil foundation [42,53].…”

Section: Reduced Model Testsmentioning

confidence: 99%

“…The relative density of sand can also significantly affect the performance of soil foundation. The bearing capacity increases with increasing of soil's density [5,46,53]. Das and Omar [46] performed model tests on strip footing resting on the geogrid-reinforced sand bed and found that the BCR decreases with the increase of relative density.…”

Section: Reduced Model Testsmentioning

confidence: 99%

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Planar geosynthetic-reinforced soil foundations: a review

2020

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Geosynthetics-reinforced soil (GRS) foundation can improve the bearing capacity of the foundation and reduce the settlement of the footing, which has been widely applied to the treatment and improvement of soft soil foundation. In recent years, scholars have carried out a large number of studies to reveal the influence of different factors on the load and settlement behaviors of GRS foundations. In this study, the reinforcing mechanisms of reinforced materials are first summarized, and then the literature review of planar geosynthetic-reinforced foundations from the aspects of experimental studies, numerical simulations and theoretical analyses are presented. Finally, the current research trend of reinforced foundation and the prospects in the future study are discussed. Although the researches on the performance of GRS foundations are conducted extensively, there is no unified understanding on the failure mode and reinforcing mechanism of reinforced foundation. It is necessary to propose the accurate and simple calculation method to evaluate the ultimate bearing capacity of reinforced foundations based on the reinforcing mechanism and failure mode. In addition, the dynamic response of GRS foundations under cyclic loading and earthquake needs to be studied intensively. The paper summarizes the past and present developments of the GRS foundations and provide the views for the further researches.

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