Performance of 2V:1H Slopes with and without Soil-Nails Subjected to Seepage: Centrifuge Study

Rotte, Veerabhadra M.; Viswanadham, B. V. S.

doi:10.1061/9780784412121.067

Cited by 7 publications

(1 citation statement)

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“…The parameters defining a regular layout of nails were introduced by Ghalehnovi (2014). Although most studies evaluated the first and second categories (Milligan and Tei, 1998;Rotte and Viswanadham, 2012;Zhang et al, 2014;Shahraki Ghadimi et al, 2017), Ghalehnovi (2014) concluded that the third category also had a considerable effect on the performance of a soil-nailed wall. Milligan and Tei (1998) performed geotechnical centrifuge experiments on 24 models of vertically nailed walls that were 20 cm in height, prepared by dry Leighton-Bazard sand.…”

Section: Introductionmentioning

confidence: 99%

Studying the effect of geometrical nail layout on the performance of soil-nailed walls: Physical and numerical modeling

Sabermahani¹

2021

Acta Geodynamica Et Geomaterialia

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Soil nailing is a reliable method of stabilising earth and rock slopes, but the geometrical layout of soil nails has not been well studied. The current research examined the effect of the geometrical layout of soil nails using analytical and physical modelling. The results of limit equilibrium analysis for different nail layouts are presented. The target gravity level was 50 g for centrifuge models and all models had a safety factor of 1.35 at this level. The parameters studied were base nail length, angle of nail tail extension, horizontal spacing of nails, and nail density. The limit equilibrium results showed that, when longer nails were used, the nail density could be decreased. The results of centrifuge modelling confirmed that different layouts at a similar safety factor did not show similar levels of displacement. Also, nail density was the most influential parameter affecting soil-nailed wall performance. An empirical relationship was observed between displacements of the wall crest and nail density. An interesting similarity was observed between the predicted slip surface and the slip surface that formed during physical modelling.

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