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Grain and model size effects in centrifuge models of granular slope instability
Data are presented of sixty-five centrifuge models of slope instability tested to assess side boundary and grain effects on model slope behavior. Three granular soils were used in which cohesion was created artificially by vacuum. In models with slopes 2.54 mm in height, where ratios of W/H were varied, models with W/H = 2.15 were the least stable; narrower and wider models were more stable, although W/H = 2.15 may not represent the minimum. In models with W/H = 3.0 and where slope heights were varied, models with slopes less than 250 grain diameter in height became progressively less stable as the slopes became smaller. It is speculated that this is due to incomplete development of shear bands. In models with slopes higher than 250 grain diameters, stability decreased, seeming to approach an asymptote at about 500 grain diameters.
Grain and model size effects in centrifuge models of granular slope instability
Data are presented of sixty-five centrifuge models of slope instability tested to assess side boundary and grain effects on model slope behavior. Three granular soils were used in which cohesion was created artificially by vacuum. In models with slopes 2.54 mm in height, where ratios of W/H were varied, models with W/H = 2.15 were the least stable; narrower and wider models were more stable, although W/H = 2.15 may not represent the minimum. In models with W/H = 3.0 and where slope heights were varied, models with slopes less than 250 grain diameter in height became progressively less stable as the slopes became smaller. It is speculated that this is due to incomplete development of shear bands. In models with slopes higher than 250 grain diameters, stability decreased, seeming to approach an asymptote at about 500 grain diameters.
Grain and model size effects in centrifuge models of granular slope instability
Einfluß von Körnung und Modellgröße bei Modelluntersuchungen mit Zentrifuge auf die Instabilität von körnigen Aufschüttungen
Goodings, D.J. (author) / Gillette, D.R. (author)
1991
8 Seiten, 9 Bilder, 20 Quellen
Conference paper
English
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