Geosynthetics Supporting Embankments Over Voids

Kinney, Thomas C.; Connor, Billy

doi:10.1061/(asce)0887-381x(1987)1:4(158)

Cited by 27 publications

(7 citation statements)

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“…In such an structure where subsoil may have voids or sinkholes, membrane effect often occurs along with soil arching (e.g., Giroud 1981;Kinney and Connor 1987;Giroud et al 1990;Wang et al 1996;Han and Gabr 2002;Rogbeck et al 2003;Briançon and Villard 2008;Abusharar et al 2009;Lu and Miao 2015;Feng and Lu 2015;Huckert et al 2016;King et al 2017). During a subsiding process, geosynthetic interacts with overlying soil: subsided soil deflects geosynthetic and is also prevented from sinking by the deflected geosynthetic at the same time.…”

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confidence: 99%

“…But at this point, the slippage between soil and geosynthetic has not been taken into account. Additionally, Kinney and Connor (1987) firstly divided the deflected geosynthetic into two parts (i.e., subsided and anchorage areas) to consider the deformation coordination. Later, Villard and Briançon (2008) analyzed the relative slippage between soil and geosynthetic in anchorage area based on Coulomb friction law.…”

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Membrane effect of geosynthetic reinforcement subjected to localized sinkholes

Feng

Chen

2018

Can. Geotech. J.

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A membrane effect often occurs in geosynthetic-reinforced structures, where subsoil may have voids or sinkholes. An analytical model is proposed to estimate membrane effect of a geosynthetic reinforcement subjected to localized sinkholes. The upper interface friction in the subsided area and vertical deformation of supporting soil in the anchorage area are considered simultaneously. The maximum geosynthetic strain and maximum surface settlement, serving as key design points, can be determined. Based on the proposed method verified using a full-scale experiment, a parametric study is conducted. The results show that ignoring upper interface friction results in significant undervaluation of maximum geosynthetic strain, and ignoring vertical deformation of supporting soil leads to obvious undervaluation of maximum surface settlement. A practical design framework is also proposed and it is an applicable tool for preliminary design of geosynthetic-reinforced structures, especially for cases with soft ground.

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confidence: 99%

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confidence: 99%

Membrane effect of geosynthetic reinforcement subjected to localized sinkholes

Feng

Chen

2018

Can. Geotech. J.

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“…Such incidences are relevant to many completed studies on using geosynthetics to support soil mass over cavities or local soft zones, for example, the studies by Bonaparte and Berg (1987), Kinney and Connor (1987), Giroud et al (1990), Chew et al (2004), Han et al (2008), Villard and Briancon (2008), Wang et al (2009), Bhandari (2010), and van Eekelen et al (2015). The outlined principle from these studies is the load transfer induced by soil arching and tensioned membrane (Marston, 1929;Terzaghi, 1936Terzaghi, , 1943Hewllet and Randolph, 1988;Delmas, 1979;Giroud et al, 1990).…”

Section: Introductionmentioning

confidence: 95%

Experimental and numerical study of geosynthetic reinforced soil over a channel

Huang

Papagiannakis

2015

Geotextiles and Geomembranes

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“…Kinney and Connor (1987) proposed a mathematical model to analyze the geosynthetic over a void and late on conducted a field test to verify the model. Chew et al (2004) conducted a large-scale test to investigate the soil arching and geosynthetic performance in which the geosynthetic was used in conjunction with piles to support soil mass over a large cavity.…”

Section: Introductionmentioning

confidence: 99%

Model Tests of Subsidence of the Reinforced Soil over Voids

Huang²,

Papagiannakis³

2014

Ground Improvement and Geosynthetics

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Geosynthetics have been used as reinforcement layers to bridge over underground voids or sinkholes to support upper soil mass. In such applications, the geosynthetics, acting as tensioned membranes, together with the soil arching, sustain the stability and mitigate the subsidence of the soil mass. An experimental study was conducted to investigate the subsidence of the soil mass induced by the permissible deformation of the geosynthetic reinforcement. The study was conducted in a container with dimensions of 875×625×50 mm 3 (L×H×W) with 7 trapdoors at the bottom. The one of the trapdoors at the bottom of the contained can be lowered to induce differential settlements. The soil was simulated by aluminum bars that have various diameters but uniform length of approximately 50 mm. The aluminum bars were intentionally used as the substitutes of soil particles to simulate the twodimensional (2D) situations. A layer of geotextile was place underneath the "soil fill" to serve as the reinforcement. During the tests, the trapdoor was lowered and the induced movements of the "soil particles" and the deformation of the geosynthetic layer were recorded and quantified by the photogrammetry methods. The subsidence profiles at different elevations were developed. It was found that subsidence was decreased hyperbolically in the vertical direction and the lateral influence range appeared to be bounded by the active soil zone, i.e., within the two planes of 45+/2.

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Geosynthetics Supporting Embankments Over Voids

Cited by 27 publications

References 1 publication

Membrane effect of geosynthetic reinforcement subjected to localized sinkholes

Membrane effect of geosynthetic reinforcement subjected to localized sinkholes

Experimental and numerical study of geosynthetic reinforced soil over a channel

Model Tests of Subsidence of the Reinforced Soil over Voids

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