Studies on scaling and instrumentation of a geogrid

Viswanadham, B. V. S.; König, Diethard

doi:10.1016/s0266-1144(03)00045-1

Cited by 136 publications

(29 citation statements)

References 9 publications

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“…Table 3 presents the scaling factors for this study assuming a ¼ 0.5 for sand (Kokusho, 1980;Yu and Richart, 1984) and considering the prototype to model scale being N ¼ 5. All factors obtained for the reinforcements were consistent with those stated by Viswanadham and Konig (2004).…”

Section: Similitude Rulessupporting

confidence: 84%

Experimental study on seismic deformation modes of reinforced-soil walls

Sabermahani

Ghalandarzadeh

Fakher

2009

Geotextiles and Geomembranes

122

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Section: Similitude Rulessupporting

confidence: 84%

Experimental study on seismic deformation modes of reinforced-soil walls

Sabermahani

Ghalandarzadeh

Fakher

2009

Geotextiles and Geomembranes

122

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“…The MTD has been developed for testing at N ¼ 20. It should be noted that the geosynthetic stiffness J depends on the centrifuge acceleration N (Viswanadham and König 2004). The choice of the geosynthetic is discussed in section 3.1.2.…”

Section: Centrifuge Modellingmentioning

confidence: 99%

Geosynthetic reinforcement of a granular load transfer platform above rigid inclusions: comparison between centrifuge testing and analytical modelling

Blanc¹,

Thorel²,

Girout³

et al. 2014

Geosynthetics International

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The soil reinforcement method, which consists of placing a granular mattress above a set of rigid inclusions, is used to transfer part of the surface load to the piles through arching. The addition of an extensible geosynthetic layer at the base of the mattress increases load transfer. A small-scale centrifuge model, the mobile tray device, is used to simulate the foundation behaviour by modelling soft soil settlement between the inclusions. A parametric study was conducted to examine the influence of the mattress thickness and of the pile spacing. The different test configurations are compared with regard to the stress transmitted to soft soil, to differential settlement and to the efficiency of load transfer. With thicker mattresses and/or closer pile meshing, load transfer increases and surface settlements are reduced. Geosynthetic maximum experimental and analytical deflections are also examined. For the analytical study, conducted using the EBGEO German standard, three different distributions of the vertical stress applied to the geosynthetic layer are compared: uniform, triangular and inverse triangular. All three scenario results fall within the range of the experimental results. The inverse triangular distribution reveals some deflection values that were lower than the uniform one. The triangular distribution gives the highest deflection values.

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“…Scaling considerations given by Viswanadham and König (2004); Rajesh and Viswanadham (2009), Izawa and Kuwano (2010) and Rajesh and Viswanadham (2011) were used to achieve the modeling considerations for the reinforcement function. The frictional bond behavior along soilegeogrid interface was assumed to be achieved by ensuring identical percentage open area f between model and prototype geogrids.…”

Section: Soil Parametersmentioning

confidence: 99%