Field behaviour geotextile reinforced sand column

Tandel, Yogendra; Solanki, C. H.; Desai, Atul K.

doi:10.12989/gae.2014.6.2.195

Cited by 13 publications

(3 citation statements)

References 26 publications

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“…The hoop stress in geosynthetic increases, it leads to increasing in confining pressures in the column as described by Murugesan and Rajagopal 2006 12 . Hence, the column with higher tensile stiffness will induce larger confining pressures, leading to a stiffer and stronger response of the column 5 .…”

Section: Effect Of Tensile Stiffness Of Geosyntheticmentioning

confidence: 99%

Deformation behaviour of granular column reinforced by geosynthetic encasement

Quân

Nhật

Kỳ

et al. 2021

Sci. Tech. Dev. J.- Eng. Tech.

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In Vietnam, the overpopulation and strong economic development require the synchronous development of infrastructure such as roads, urban areas, industrial parks, export processing zones, etc. With such requirements, the development of land fund for infrastructure construction is an indispensable need. Meanwhile, the appropriate land fund is very limited. Therefore, the land fund must be developed for areas with little value for agriculture, such as swamps, estuaries, and coastal areas, etc. These areas often have weak geological conditions; hence, to meet the requirements of infrastructure construction on the soft ground, it is necessary to carry out soil improvement to ensure load bearing capacity, total settlement, and consolidation settlement but still ensuring economic effectiveness. Beside several conventional methods widely used for soft soil improvement in order to increase bearing capacity and accelerate consolidation settlement of the ground, geosynthetic reinforced granular column is one of the new methods that has been applied to improving soft ground in designing practice in the recent years due to the many advantages of this method compared with other methods. In this paper, based on the unit cell model, the authors research on deformation behavior of granular column reinforced by geosynthetic encasement through the analytical analysis by varying external loadings corresponding to column diameter, stiffness of geosynthetic encasement. The settlements of a single geosynthetic encased granular column and load bearing capacity of the composite foundation are calculated on geological conditions of Ash Pond Area of Song Hau 1 Thermal Power Plant located in Hau Giang Province. The relationship between settlement and load bearing capacity with external loadings for different column diameters and geosynthetic stiffnesses are shown schematically. Other considerations related to factor of safety are also presented. The future researches are also proposed.

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Section: Effect Of Tensile Stiffness Of Geosyntheticmentioning

confidence: 99%

Deformation behaviour of granular column reinforced by geosynthetic encasement

Quân

Nhật

Kỳ

et al. 2021

Sci. Tech. Dev. J.- Eng. Tech.

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“…Also, stone columns were found to move along with the direction of soil movement without offering any resistance. This shows the limitation of stone columns without any confinement that resulted in distortion of gravel structure under shear loading Rajagopal, 2006, 2009;Tandel et al, 2014;Tandel et al, 2017;Rashma et al, 2020Rashma et al, , 2021. Additionally, the performance of stone column is dependent on the strength of surrounding soil properties.…”

Section: Introductionmentioning

confidence: 97%

Limit equilibrium slope stability analysis of column-supported embankment on weak ground

R.S.V.,

B.R.,

2023

WJE

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Purpose The study aims to analyse the stability of embankments over the improved ground with stone column (SC) and pervious concrete column (PCC) inclusions using limit equilibrium method. The short-term stability of PCC-supported embankment system is rarely addressed. Therefore, the factor of safety (FOS) of column-supported embankment system is calculated using individual column and equivalent area models. Design/methodology/approach The stability analysis of column-supported embankment system is conducted using PLAXIS LE 2D. The various geometrical and shear strength parameters influencing the FOS of these embankment systems such as diameter of columns, spacing between columns, embankment height, friction angle of column material, undrained cohesion of weak ground and cohesion of PCC are considered. Findings The critical failure envelope of PCC-supported embankment system is observed to be of toe failure, whereas the failure envelope of stone column-supported embankment system is generally of deep-seated nature. Originality/value It is found that for PCC embankment system, FOS and failure envelope are not influenced by the geometrical/shear strength parameters other than height of embankment. However, for stone column-supported embankment system, FOS and failure envelope are dependent on all the shear strength and geometrical parameters considered in this study.

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“…In recent years, there have been some studies on sand columns [ 29 , 30 , 31 ]. However, there is no research on the internal stress monitoring of sand-filled steel tube column structures under impact loadings.…”

Section: Introductionmentioning

confidence: 99%

Experimental Study on Stress Monitoring of Sand-Filled Steel Tube during Impact Using Piezoceramic Smart Aggregates

Zhang

et al. 2017

Sensors

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The filling of thin-walled steel tubes with quartz sand can help to prevent the premature buckling of the steel tube at a low cost. During an impact, the internal stress of the quartz sand-filled steel tube column is subjected to not only axial force but also lateral confining force, resulting in complicated internal stress. A suitable sensor for monitoring the internal stress of such a structure under an impact is important for structural health monitoring. In this paper, piezoceramic Smart Aggregates (SAs) are embedded into a quartz Sand-Filled Steel Tube Column (SFSTC) to monitor the internal structural stress during impacts. The piezoceramic smart aggregates are first calibrated by an impact hammer. Tests are conducted to study the feasibility of monitoring the internal stress of a structure. The results reflect that the calibration value of the piezoceramic smart aggregate sensitivity test is in good agreement with the theoretical value, and the output voltage value of the piezoceramic smart aggregate has a good linear relationship with external forces. Impact tests are conducted on the sand-filled steel tube with embedded piezoceramic smart aggregates. By analyzing the output signal of the piezoceramic smart aggregates, the internal stress state of the structure can be obtained. Experimental results demonstrated that, under the action of impact loads, the piezoceramic smart aggregates monitor the compressive stress at different locations in the steel tube, which verifies the feasibility of using piezoceramic smart aggregate to monitor the internal stress of a structure.

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Field behaviour geotextile reinforced sand column

Cited by 13 publications

References 26 publications

Deformation behaviour of granular column reinforced by geosynthetic encasement

Deformation behaviour of granular column reinforced by geosynthetic encasement

Limit equilibrium slope stability analysis of column-supported embankment on weak ground

Experimental Study on Stress Monitoring of Sand-Filled Steel Tube during Impact Using Piezoceramic Smart Aggregates

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