Performance of surface footing on geocell-reinforced soft clay beds

Thallak, Sitharam; Saride, Sireesh; Dash, Sujit Kumar

doi:10.1007/s10706-007-9125-8

Cited by 80 publications

(25 citation statements)

References 16 publications

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“…But settlement is very important in practical design of shallow foundations. The improvement in bearing capacity is estimated to be unreal in some studies [15,17,20] because of not considering the acceptable range of settlement. The footing settlement ( ) must not be more than 12% of the footing width ( ).…”

Section: Cellular Confinement Systemsmentioning

confidence: 99%

Comparison of Effects of Using Geosynthetics and Lime Stabilization to Increase Bearing Capacity of Unpaved Road Subgrade

Pancar

Akpınar

2016

Advances in Materials Science and Engineering

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So many soil improvement methods have been developed in order to increase bearing capacity of superstructure of the road to be constructed on the soft clayey road base soils, decrease settlements, and increase other strength specifications (CBR,k,MRvalues, etc.). In this paper, lime stabilization of clayey road base soil with high water content and its improvement with geosynthetics (geocell + geotextile) reinforcement and comparisons of these two different improvement methods were made. For this purpose, plate loading experimental comparisons of clayey soil, which had high water content by 10% increasing the optimum water content, were made after it was improved with lime at the rates of 3, 6, and 12%, geotextile reinforcement, geocell reinforcement, geosynthetics reinforcement, and geosynthetics reinforcement + lime stabilization at various rates. It was understood that these improvement methods will not yield sufficient results on clayey soils with high water content on their own, and method of improvement with lime and then reinforcement with geosynthetics yields better results on these types of soils. Only one improvement state among ten different states examined in this study gave the sufficient results for the soil to be used for unpaved roads.

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Section: Cellular Confinement Systemsmentioning

confidence: 99%

Comparison of Effects of Using Geosynthetics and Lime Stabilization to Increase Bearing Capacity of Unpaved Road Subgrade

Pancar

Akpınar

2016

Advances in Materials Science and Engineering

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“…Latha et al [23] studied the consequences of a reinforcement form on strength enhancement of geosynthetic reinforced sand through triaxial compression tests. Sitharam et al [24] develop an understanding to the behavior of geocell reinforced soft soil, natural silty soil, foundations under circular loading by conducting plate load tests on circular footing. Zhou and Wen [14] studied improvement in bearing capacity of soft soil from geosynthetic materials included in sand cushion to fabricate composite layers through large scale model tests designed according to similarity theory.…”

Section: Literature Reviewmentioning

confidence: 99%

“…Sides of this tank were braced properly with mild steel flat to prevent yielding of tank material while applying load on model footing. In this study model footing used was a 25mm thick mild steel plate of diameter 200 mm Base of this model footing was roughened by cementing a thin layer of sand with epoxy glue [19,20,24,25,28]. To apply load on model footing a manually operated hydraulic jack resting against the reaction frame was used.…”

Section: Materials Collectionmentioning

confidence: 99%

Performance of Circular Footing on Expansive Soil Bed Reinforced with Geocells of Chevron Pattern

2019

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Results from laboratory model tests performed on circular footing are presented in this paper to understand the performance of geocell reinforced expansive soil. Naturally occurring expansive soil was used in this study as subsoil. Geocells of chevron pattern fabricated from geotextile made up of polypropylene were used to reinforce the soil bed. The parameters studied in this testing program were the placement depth of the geocell mattress, pocket size of geocell and the height of geocell mattress. Contrary to other researchers; the improvement in the performance of reinforced bed is evaluated at a settlement level equal to the failure settlement of unreinforced soil bed. The performance of reinforced bed is evaluated through two non-dimensional factors viz. bearing capacity improvement factor (If) and settlement reduction factor (PRS%). Test results indicated that with the introduction of geocell as reinforcement, a substantial improvement in bearing capacity and decrease in footing settlement can be achieved. Bearing capacity of reinforced bed increases by more than 200% and 81% reduction in footing settlement was achieved by using geocell mattress of optimal dimensions and placing it just below the footing base.

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“…Using geosynthetics reinforcement could reduce settlement of foundation and enhance the bearing capacities foundation beds [4][5][6][7]. Several researchers have studied the behaviour, of pipes embedded beneath geogrid reinforced soil, under surface loading [8][9][10].…”

Section: Introductionmentioning

confidence: 99%

Experimental Investigation of the Effect of Geogrid Reinforced Backfill Compaction on Buried Pipelines Response

Alotaibi¹,

Omar²,

Arab³

et al. 2019

World Congress on Civil, Structural, and Environmental Engineering

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The increasing in development and population, have made using of shallow buried pipelines inevitable in highways, subways, and urban areas. In this paper the behavior and the response of shallow Polyvinyl chloride (PVC) pipes buried in geogrid reinforced sand under static loads was investigated. Three series of large-scale laboratory experiments were conducted under static loading. The first test program investigated the effect of compaction effort on the bearing capacity and surface settlement under static loading of strip footing with no buried pipe. In this testing program six levels of sand relative density were achieved (30%, 40%, 50%, 60%, 70% and 80%). The tests results have shown significant improvement on bearing capacity of soil with decrease in surface settlement. In the second series, a buried PVC pipe with a diameter of 200 mm at a depth of 300 mm was in introduced and loaded with strip loading. In this series of testing the backfill relative density was changed over the same range. The increase in relative density have showed noticeable decrease in surface settlement and load transferred to the pipe crown. Third test series conducted with geogrid-reinforced backfill varying compaction effort above and below the geogrid reinforcement. The highest results have shown the importance of the compaction effort on the installation of geogrid reinforcement. The backfill reinforced with geogrid at relative density of 70% has shown a 78 % reduction in surface settlement, while highest improvement of pipe crown deflection was 51% for 50% relative density. Also, optimum location of one layer of geogrid reinforcement has been investigated. The optimum depth to diameter ratio of the geogrid was found to be 0.11 regardless of the relative density.

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Performance of surface footing on geocell-reinforced soft clay beds

Cited by 80 publications

References 16 publications

Comparison of Effects of Using Geosynthetics and Lime Stabilization to Increase Bearing Capacity of Unpaved Road Subgrade

Comparison of Effects of Using Geosynthetics and Lime Stabilization to Increase Bearing Capacity of Unpaved Road Subgrade

Performance of Circular Footing on Expansive Soil Bed Reinforced with Geocells of Chevron Pattern

Experimental Investigation of the Effect of Geogrid Reinforced Backfill Compaction on Buried Pipelines Response

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