Large Model Spread Footing Load Tests on Geosynthetic Reinforced Soil Foundations

Adams, Michael T.; Collin, James G.

doi:10.1061/(asce)1090-0241(1997)123:1(66)

Cited by 341 publications

(104 citation statements)

References 3 publications

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“…However, the results are in contrast with reports of other researches [7,12,13] , which, most likely is due to difference in material properties and the geometric dimensions of the foundation and reinforcement. Hence, it may be concluded that; reporting a single value of u/B for optimum bearing capacity of geogrid reinforced soil is flawed as reported by other researchers such as; Adams and Colin [2] , Yetimuglu et al [4] , and Guido et al [8] . …”

Section: Placement Of Reinforcementmentioning

confidence: 99%

“…Detailed investigations have been performed using small scale laboratory test models and a (limited) number of in-situ tests [1,2,3,4,5,6,7,8 ] These studies (among others) have demonstrated that; a geosynthetic reinforcement placed below a foundation can increase both, the ultimate bearing capacity, and allowable bearing stress at a given settlement. However, due to the numerous parameters effecting the bearing capacity of shallow foundations and, limited literary records that predict the global effects of the physical and strength specifications of reinforced sand embankments, strength parameters of geogrid reinforcement, consider found action conditions and lack of research into geogrid reinforced circular foundations, more research is required to understand this emerging technology.…”

Section: Introductionmentioning

confidence: 99%

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Numerical Investigation Into the Behavior of Circular Pad Shallow Foundations Supported by Geogrid Reinforced Sand

Bagheripour¹,

Rahgozar²

2008

American J. of Applied Sciences

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This study seeks to widen the pool of knowledge on the use and characteristics of geosynthetics, specifically in the area of circular foundations supported by geosynthetic reinforced sand. The main objective of the work was to increase the awareness of circular foundation systems and thus increase the accuracy of current laboratory methods. Also, compare the results with that of previous papers on the subject and to provide new model curves to estimate the bearing capacity of circular foundations. In this respect, the foundation and the soil underneath was modeled using four nots isoparameters finite element aid, while, for geogrid reinforcement, the four nots one-dimentional finite element model was used. The sand behavior was based on demolition elasto-plastic druckerprager criteria and for the reinforcement the linear criteria was used. The paper investigates the effects of the reinforcement placing properties, soil properties, reinforcement properties, and the geometric properties of circular foundations. The results showed that; the bearing capacity ratio at a settlement level for geogrid reinforced sand is effected considerably by parameters such as: reinforcement placement, reinforcement layers, reinforcement strength, geometric properties of circular foundations, and effects of using granular soils. Based on the results achieved, a number of design curves have been developed to assist with the estimation (design) of field bearing capacity of shallow foundations supported by geogrid reinforced soil. Keeping in mind the settlement limitations in real space, the curves have been developed for normal settlement levels up to a settlement ratio of 2.5%.

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Section: Placement Of Reinforcementmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Numerical Investigation Into the Behavior of Circular Pad Shallow Foundations Supported by Geogrid Reinforced Sand

Bagheripour¹,

Rahgozar²

2008

American J. of Applied Sciences

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“…5 is about 0.25 to 0.5. An analysis of the test results of Schlosser et al [17] yields a value of (u/B)cr § /DUJH-scale model tests of Adams and Collin [18] showed that (u/B)cr is approximately 0.25. Miyazaki and Hirokawa [19] also observed a similar value of (u/B)cr for the case of N = 1 (that is, single layer of geogrid reinforcement).…”

Section: Laboratory Experiments On Geogrid Reinforced Soilmentioning

confidence: 99%

Numerical analysis of shallow foundations on geogrid reinforced soil

2017

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Abstract.Geogrids have been increasingly used as soil improvement technique over the past decade. This increasing trend is attributed to its ease of application and low cost compared to other improvement techniques. This paper provides a review of the published results related to the ultimate and allowable bearing capacities of shallow foundations on geo-grid-reinforced homogeneous sand soil. A numerical analysis is also conducted to investigate soil-geogrid interaction considering several critical parameters that affect the overall behavior of geogrid-reinforced soil. The critical parameters such as the width and length of geogrid layers, spacing between the reinforcement layers, and the depth of reinforcement and geosynthetic stiffness have been investigated.

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“…Since there were no obvious changes in loadsettlement curves of biaxial geogrid reinforcement, the ultimate bearing capacities were estimated by using tangent intersection technique 2) . These values from the subsequent monotonic loading tests were 193.31 kPa, 215.64 kPa and 212.39 kPa for 0, 45 and 90-degree footing orientations respectively.…”

Section: Bearing Capacity Behavior After Cyclic Loadingmentioning

confidence: 99%

“…Although different studies had been conducted by many researchers, such as Yetimoglu et al 1) , Adams & Collin 2) , Murad et al 3) , Ashmawy & Bourdeau 4) and Shin & Das 5) , behavior of geogrid-reinforced soil is still necessary to understand because of its complex reinforcement mechanisms. A. K. Ashmawy and P.L.…”

Section: Introductionmentioning

confidence: 99%

Directional Confinement Effect of Geogrid on Deformation and Bearing Capacity of Reinforced Sand under Cyclic and Monotonic Loadings

Soe

Kuwano

Tachibana

et al. 2016

Geosynthetics Engineering Journal

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Deformation behavior and bearing capacity of geogrid-reinforced sand were investigated through experimental study. Series of cyclic and monotonic loading tests were performed by using a large container, a rectangular footing and two geogrid types: triangular and biaxial. Footing orientation was considered as a parameter to examine the directional confinement effect of the geogrid. Test results showed that this effect was obvious on the development of permanent deformation and on the ultimate bearing capacity of reinforced sand. However, this influence became smaller on the ultimate bearing capacity if a stiffer geogrid was used for reinforcement. Significant reduction in permanent deformation and beneficial improvement in bearing capacity were observed in all geogrid-reinforced tests.

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Large Model Spread Footing Load Tests on Geosynthetic Reinforced Soil Foundations

Cited by 341 publications

References 3 publications

Numerical Investigation Into the Behavior of Circular Pad Shallow Foundations Supported by Geogrid Reinforced Sand

Numerical Investigation Into the Behavior of Circular Pad Shallow Foundations Supported by Geogrid Reinforced Sand

Numerical analysis of shallow foundations on geogrid reinforced soil

Directional Confinement Effect of Geogrid on Deformation and Bearing Capacity of Reinforced Sand under Cyclic and Monotonic Loadings

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