Effect of reinforcement geometry on the performance of a reduced-scale strip footing model supported on geocell reinforced sand

Kargar, Mohsen; Hosseini, S. Majdeddin Mir Mohammad

doi:10.24200/sci.2017.2380

Cited by 16 publications

(10 citation statements)

References 20 publications

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“…The performance of geocell-reinforced structures improves with the decrease in the pocket size of geocells up to a certain optimum value and then stabilizes or declines thereafter. Furthermore, the decrease in the pocket size of geocells increases their surface area, which increases the active lateral pressure developed within the geocell wall, thereby enhancing the overall rigidity offered by the geocell reinforced soil composite [28,39]. However, beyond a certain value, the improvement in performance is negligible.…”

Section: Pocket Size or Aperture Opening Size (D)mentioning

confidence: 99%

Evolution of Geocells as Sustainable Support to Transportation Infrastructure

Krishna,

Latha

2023

Sustainability

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Geocells, which are polymeric interconnected cells filled with soil, provide excellent support to loads through all-round confinement and a beam effect; hence, they are extensively used in various geotechnical applications such as embankments, foundations, pavements, slopes, railways, and reinforced earth (RE) walls. Although the applications of geocells are studied extensively, their geometric and parametric evolution as a stable support to heavy loads receive less attention. The current versatile configuration of geocells has geometrically evolved after accounting for all the factors that give them optimum reinforcement efficiency. This paper presents a state-of-the-art review of the geometric evolution of geocells in the context of transportation geotechnical engineering. Effects of shape, size, stiffness, and surface roughness of geocells, and properties of infill and native soils on the performance of geocells are compiled from the literature to get important design insights. The application of geocells in pavements is discussed, concluding that geocells improve the cyclic load carrying capacity and resilient characteristics of pavement, reduce rut depths, and increase traffic benefit ratio (TBR). Hence, geocells can be a sustainable alternative to natural materials in transportation infrastructure, with the added advantages of reduced carbon footprint and maintenance costs.

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Section: Pocket Size or Aperture Opening Size (D)mentioning

confidence: 99%

Evolution of Geocells as Sustainable Support to Transportation Infrastructure

Krishna,

Latha

2023

Sustainability

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“…The findings indicate that increasing the height and the coverage ratio of cellular reinforcement corresponded to a higher value of failure surcharge pressure. (Kargar & Mir Mohammad Hosseini, 2017) studied the influences of geocell height, width, pocket size and number of geocell layers on the bearing pressure-settlement behavior by employing a small-scale physical model. The results demonstrated that the ultimate bearing capacity increased from 1.6 to 7.1 times the capacity without reinforcement when the ratio of the geocell height to the plate width increased from 0.25 to 1.5.…”

Section: Introductionmentioning

confidence: 99%

Experimental and numerical investigation on the behavior of strip footing on geocell reinforced sand

Ghoneim,

El sawwaf,

Nasr

2024

Delta University Scientific Journal

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Geosynthetic reinforcements have become increasingly popular in the last few years for usage in a variety of infrastructure projects because of their advantageous properties. One kind of geosynthetic that is produced as three-dimensional interconnected cells is called geocell. It can be used as a reinforcement to enhance base course behavior by offering lateral confinement, which increases the base course's stiffness and strength while lowering surface permanent deformation. Therefore, this research aims to study the behavior of strip footing rested on a geocell reinforced sand bed experimentally and numerically. In this research, a single geocell, filled with sand, was exposed to a vertical load until reaching failure. The testing process was modeled through the use of PLAXIS 3D numerical software. The effects of using a geocell as a reinforcement on load-bearing capacity and settlement at variable parameters, such as depth of placement, height, and length of reinforcement under axial compression load were studied. The results indicate that using geocell as soil reinforcement leads to a noticeable improvement in the bearing capacity and settlement response of the soil. The recommended geocell layer height, length, and placement depth that give the maximum bearing capacity improvement are presented and discussed. The effect of using geocell as soil reinforcement on the ultimate bearing capacity is estimated by bearing capacity ratio (BCR) and modulus of subgrade reaction (ks).

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“…In the recent past, several model-scale tests have been carried out to understand the behaviour of geocell-reinforced soils under static loads [1][2][3][4][5][6][7][8][9][10][11]. Previous scholars have also reported the use of geocell reinforcement as a cost-effective method for increasing the ultimate bearing capacity and reducing the settlement values of shallow footings.…”

Section: Introductionmentioning

confidence: 99%

Response of Square Footing on Geocell-Reinforced Sand Bed Under Static and Repeated Loads

Doley

Das

Shukla

2021

Int. J. of Geosynth. and Ground Eng.

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This paper describes the behaviour of a square model footing resting on a geocell-reinforced sand bed subjected to static and repeated loads. The static load tests were conducted to investigate the performance improvement of reinforced soil in terms of bearing capacity and settlement. The repeated load tests were carried out with varying initial static pressures to simulate the structures wherein the live loads change slowly and repeatedly such as oil or water storage tanks do. The ultimate bearing capacity, effect of initial static pressure as well as the number of load cycles without and with the use of geocell reinforcement were the main parameters to be investigated in this study. The results showed that with the provision of geocell reinforcement, the bearing capacity of reinforced soil increased by 2.4 times as compared to unreinforced soil, and the settlement decreased by 68% at the measured settlement level, s/B = 10% (s = settlement of footing, B = width of footing). It has also been observed that the total settlement reduces by 56% in case of geocell-reinforced sand after the application of 20 load cycles. Further, the results show that the total settlement increases at a gradually decreasing rate with an increase in initial static pressure and the number of load cycles.

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Effect of reinforcement geometry on the performance of a reduced-scale strip footing model supported on geocell reinforced sand

Cited by 16 publications

References 20 publications

Evolution of Geocells as Sustainable Support to Transportation Infrastructure

Evolution of Geocells as Sustainable Support to Transportation Infrastructure

Experimental and numerical investigation on the behavior of strip footing on geocell reinforced sand

Response of Square Footing on Geocell-Reinforced Sand Bed Under Static and Repeated Loads

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