Laboratory investigation of bearing capacity behaviour of strip footing on reinforced flyash slope

Choudhary, Anil K.; Jha, J. N.; Gill, K. S.

doi:10.1016/j.geotexmem.2009.09.007

Cited by 83 publications

(27 citation statements)

References 27 publications

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“…Use of a small scale model to investigate the behaviour of a full scale foundation is a widely used technique [23] but due to scale effects especially in granular soils it may not play the same role in the laboratory models as in the prototype. The differences occur primarily because of the differences in stress level between the model tests and the field tests and due to the influence of the ratio of footing width to the particle size.…”

Section: Limitationsmentioning

confidence: 99%

Bearing Capacity and Settlement Characteristics of Sand Subgrades with Vertical Reinforcement Supporting a Square Footing

Jha

Shukla

2015

Int. J. of Geosynth. and Ground Eng.

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The restraining effects in the sand subgrade under the footing can be provided by inserting the vertical reinforcing bars beyond the footing base without disturbing the subgrade below the footing. This technique of soil reinforcement can be quite beneficial for the footings where improvement is necessary. This paper presents the results of model square footing tests with vertical reinforcements inserted into the sand subgrade beyond the footing base only. The variables selected for the investigation were spacing of vertical reinforcement, extent of reinforcement from the edge of footing, length of reinforcement, diameter of reinforcement, width of footing and surface characteristics of the reinforcement. The values of theoretical bearing capacity of reinforced sand subgrade were determined using the method of slices and compared with experimental results. It was found that results were comparable particularly when the length of reinforcement and extent of reinforcement were two times the footing width.

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Section: Limitationsmentioning

confidence: 99%

Bearing Capacity and Settlement Characteristics of Sand Subgrades with Vertical Reinforcement Supporting a Square Footing

Jha

Shukla

2015

Int. J. of Geosynth. and Ground Eng.

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“…At any given position, the location of the reinforcement was such that it extended up to the face of the slope. The experimental set up and test procedure has been reported in detail by Choudhary et al (2010). The geometry of the test configuration is shown in Figure 1.…”

Section: Preparation Of Slopementioning

confidence: 99%

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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“…It has been well known that factors such as number and length of layers, depth of first layer and spacing between layers influence the load-bearing capacity of reinforced compacted fills (Samtani and Sonpal 1989;Tsukada et al 1993;Yoo 2001;El Sawwaf 2007 andChoudhary et al 2010). For instance, Choudhary et al (2010) reported significant increase in the bearing capacity of a reinforced fly ash slope after inserting layers of geogrid in a laboratory scaled model slope. He also reported that increasing the edge distance (distance of footing from crest of slope) or reducing the slope angle increases the bearing capacity of the footing.…”

Section: Introductionmentioning

confidence: 99%

Behavior of Strip Footing on Fiber-Reinforced Model Slopes

Inibong¹,

Mohamed²,

Miraftab³

2014

Ground Improvement and Geosynthetics

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Laboratory scaled model slopes reinforced with waste carpet fibers were made in a rigid tank with dimensions of 800 mm x 300 mm x 500 mm. Bearing capacities of the strip footing rested on non-reinforced and fiber reinforced model slopes with 1 %, 3 % and 5 % fiber content were compared at 20 % footing displacement ratio. The influence of location of footing on the bearing capacity was studied with placing the footing at different edge distances from crest of the footing (i.e., 150 mm, 100 mm and zero). Suction probe sensors were installed at appropriate locations on the rear side of the model slope to measure the pore-water pressure generated due to the footing pressure. Results showed that fiber reinforcement increased the bearing resistance of the model slopes significantly. Inclusion of 5 % fiber increased the bearing resistance by 271 % compared to that of non-reinforced model slope at the footing edge distance ratio of three. The location of footing was found to affect the load carrying capacity of the fiber reinforced model slope. The increase in the edge distance ratio of the footing increased the load carrying capacity of the model slope.

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Laboratory investigation of bearing capacity behaviour of strip footing on reinforced flyash slope

Cited by 83 publications

References 27 publications

Bearing Capacity and Settlement Characteristics of Sand Subgrades with Vertical Reinforcement Supporting a Square Footing

Bearing Capacity and Settlement Characteristics of Sand Subgrades with Vertical Reinforcement Supporting a Square Footing

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

Behavior of Strip Footing on Fiber-Reinforced Model Slopes

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