Abstract
Using a new ring-shear apparatus with a transparent shear-box and video image analysis system, drained speed-controlled test was conducted on coarse-grained silica sands to study the shear-zone formation process in granular materials. Velocity distribution profiles of grains under shear at various stages in the ring shear test were measured through processing the video image by Particle Image Velocimetry (PIV) program. In the initial stage of shearing, comparatively major part of the sample in the upper shear box showed a velocity distribution due to deformation and dilatancy behavior. Thereafter, velocity distribution profile changed into slide-like mode and thereafter showed almost no change. This study was conducted as a part of the International Programme on Landslides M101 “Areal prediction of earthquake and rain induced rapid and long-traveling flow phenomena (APERITIF)” of the International Consortium on Landslides (ICL). These results will contribute to understanding the mechanism of shear-zone development in granular materials as a basic knowledge for disaster risk mitigation of rapid long runout landslides.
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© 2005 Springer-Verlag Berlin Heidelberg
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Fukuoka, H., Sassa, K., Wang, G., Sasaki, R. (2005). Measurement of Velocity Distribution Profile in Ring-Shear Apparatus with a Transparent Shear Box. In: Sassa, K., Fukuoka, H., Wang, F., Wang, G. (eds) Landslides. Springer, Berlin, Heidelberg. https://doi.org/10.1007/3-540-28680-2_18
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DOI: https://doi.org/10.1007/3-540-28680-2_18
Publisher Name: Springer, Berlin, Heidelberg
Print ISBN: 978-3-540-28664-6
Online ISBN: 978-3-540-28680-6
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