Laboratory investigation of bearing capacity behavior of strip footing on geogrid-reinforced sand slope

Yoo, Chung-Sik

doi:10.1016/s0266-1144(01)00009-7

Cited by 147 publications

(44 citation statements)

References 13 publications

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“…loose and medium dense sand) materials can substantially be improved by introducing the reinforcing elements, like geogrids, geotextiles etc., within the significant zone of influence with a suitable layout arrangement and configuration. The beneficial effects of using tensile reinforcement to increase the bearing capacity of soil have been clearly demonstrated by several investigators (Binquet and Lee 1975a, b;Akinmusuru and Akinbolade 1981;Das and Larbi-Cherif 1983;Fragaszy and Lawton 1984;Guido et al 1986;Huang and Tatsuoka 1990;Dixit and Mandal 1993;Khing et al 1993;Murthy et al 1993;Omar et al 1993a, b;Yetimoglu et al 1994;Adams and Collin 1997;Yoo 2001;Kumar and Saran 2001;2003a, b, c;2004;Kumar et al 2005). For designing foundations subjected to earthquake forces, adopting appropriate values of horizontal and vertical seismic coefficients, equivalent seismic forces can be conveniently evaluated.…”

Section: Introductionmentioning

confidence: 93%

Analysis of square and rectangular footings subjected to eccentric-inclined load resting on reinforced sand

et al. 2006

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In the present paper, a method of analysis for calculating the pressure intensity corresponding to a given settlement for eccentrically and obliquely loaded square and rectangular footings resting on reinforced soil foundation has been presented. The process has been simplified by presenting non-dimensional charts for the various terms used in the analysis, which can be directly used by practicing engineers. An approximate method has been suggested to find out the ultimate bearing capacity of such footings on reinforced soil. The results have been validated with the model test results. The procedure has been made clear by giving an illustrative example.

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Section: Introductionmentioning

confidence: 93%

Analysis of square and rectangular footings subjected to eccentric-inclined load resting on reinforced sand

et al. 2006

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“…Different parameters used in the Figure 1 are D e -edge distance from slope crest, B -width of footing, z-embedment depth and L r -length of reinforcement respectively and their values used in model test is shown in Table 1. Yoo (2001) reported that for deriving maximum improvement in ultimate bearing capacity the optimum L r /B ratio (L r = length of reinforcement, B=Width of footing) should be in the range of 6.0-8.0. Michalowski (1997) reported that the length of reinforcement should be 0.65 times the slope height to prevent collapse of slope due to reinforcement rupture, pullout or direct sliding.…”

Section: Preparation Of Slopementioning

confidence: 99%

“…Therefore the length of reinforcement for the present investigation was also kept constant as 7.0B throughout the study. Yoo (2001), EI Sawwaf (2007), Alamshahi and Hataf (2009) reported that for deriving maximum improvement in load bearing capacity of reinforced slope, the vertical spacing between reinforcements should be in the range of 0.50B-0.75B. Thanapalasingam and Gnanendran (2008) advocated embedment depth for the first and second layer as 0.25B and 0.50B from the ground surface of sloped fill for multiple reinforcement layers (N = 4, where N is the number of reinforcement layers).…”

Section: Preparation Of Slopementioning

confidence: 99%

“…One of the possible solutions to improve the load bearing capacity would be reinforcing the sloped fill with the layers of geogrid. Limited studies on load bearing capacity behaviour of strip footings on reinforced slopes have been reported in the literature (Selvadurai and Gnanendran 1989, Huang et al 1994, Lee and Manjunath 2000, Yoo 2001, EI Sawwaf 2007, Alamshahi and Hataf 2009, Mittal et al 2009. A comprehensive overview of geosynthetic-reinforced slopes with some specific recommendations was also reported by Shukla et al (2011).…”

Section: Introductionmentioning

confidence: 99%

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Load Bearing Capacity of Footing Resting on the Fly Ash Slope with Multilayer Reinforcements

Gill¹,

Choudhary

Jha³

et al. 2012

GeoCongress 2012

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In several parts of the world, the disposal of waste materials like fly ash is a challenging task. The applications of fly ash as structural fills in foundations is one of the best solutions to disposal problems, because they can be used in large volumes in such application. There may be difficulty due to poor load-bearing capacity of fly ash, especially when footings rest on the top of the fly ash fill slope; but inclusion of polymeric reinforcements as horizontal sheets within the fill may be advantageous in improving the load-bearing capacity of reinforced fly ash slope. The aim of present investigation is to find out the efficacy of multi layer reinforcements in improving the load-bearing capacity when incorporated within the body of fly ash embankment. An increase in load bearing capacity due to the incorporation of reinforcement layers in the model slope was observed in the laboratory tests. The experimental results were compared with the numerical findings obtained from the finite element analysis using commercial software PLAXIS 2D version 9.0.

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“…Of course, different kinds of countermeasures, such as geosynthetics, including geogrids and geotextiles, had been widely performed to ensure the stability of these artificial slopes (Lee and Manjunath 2000;Yoo 2001;Blatz and Bathurst 2001). However, due to its complexity, these artificial slopes should be real-time monitored to ensure the stability, even after the welldesigned countermeasures had been carried out.…”

Section: Introductionmentioning

confidence: 99%

Test on application of distributed fiber optic sensing technique into soil slope monitoring

et al. 2008

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Brillouin optical time-domain reflectometer (BOTDR), a newly developed distributed fiber optic sensing technique, has been proved to be a very suitable and useful technique for monitoring and early warning of structural engineering by laboratory tests and practical projects due to its unique functions, such as distributing, long distance, anti-electromagnetic interference, waterproof, etc. However, its application to geotechnical engineering, especially soil-slope engineering, has been less carried out due to the complexity of the characteristics of geotechnical materials in the field. In this paper, BOTDR technique is applied to monitor the deformation of a laboratory soil-slope model in small scale in order to test the feasibility and early-warning characteristics of this technique with monitoring the deformation of soil slope. Different types of optical fibers are planted directly in the soil-slope model or bonded to geotextiles and geogrids that are planted in the fillings of the test model. Strain measurements of the model slope under various loads are obtained by BOTDR. By data processing and analysis, the abnormal strains can be obtained distributively, and the position of the abnormal strains can be located as well. The results show much valuable information for applications of BOTDR technique into soil-slope engineering. The test proves that the BOTDR technique can be used to ensure the stability of artificial soil slope and is useful for monitoring and early warning of the artificial soil-slope engineering.

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Laboratory investigation of bearing capacity behavior of strip footing on geogrid-reinforced sand slope

Cited by 147 publications

References 13 publications

Analysis of square and rectangular footings subjected to eccentric-inclined load resting on reinforced sand

Analysis of square and rectangular footings subjected to eccentric-inclined load resting on reinforced sand

Load Bearing Capacity of Footing Resting on the Fly Ash Slope with Multilayer Reinforcements

Test on application of distributed fiber optic sensing technique into soil slope monitoring

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