Objective Oriented Multistage Ring Shear Test for Shear Strength of Landslide Soil
Publication: Journal of Geotechnical and Geoenvironmental Engineering
Volume 130, Issue 2
Abstract
Ring shear tests were conducted on five samples of different nature with a modified Imperial College type ring shear machine. The three different testing methods used, (1) individual sample testing for each normal stress, (2) increasing load multistage ring shear test, and (3) reducing load multistage ring shear test, all showed similar effective residual internal friction angle for the samples, irrespective of testing method. However, effective residual shear intercept was different according to the testing methodology. The internal friction angle did not vary, particularly after the first minimum point in the stress displacement curve, although the residual shear intercept decreased with increase in the displacement. The thickness of the shearing zone increased along with the displacement. The remolded peak shear strength for saturated conditions at field dry density varied with the consolidation history. Measurement of remolded peak shear strength was possible in a single sample using the increasing load multistage ring shear test at normal consolidation. The equilibrium water content of the sample after the ring shear test was nearly equal to the plastic limit.
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References
Bishop, A. W., Green, G. E., Garga, V. K., Andresen, A., and Brown, J. D.(1971). “A new ring shear apparatus and its application to the measurement of the residual strength.” Geotechnique, 21(4), 273–328.
Bromhead, E. N. (1991). “The recent history and geotechnics of landslides at Gore cliff, Isle of Wight.” Slope stability engineering—Application and developments, Thomas Telford, London, 171–178.
Bromhead, E. N. (1992). Stability of slopes, 2nd Ed., Surrey University Press, London.
Harris, A. J., and Watson, P. D. J.(1997). “Optimal procedure for the ring shear test.” Ground Eng., 30, 26–28.
Lupini, J. F., Skinner, A. E., and Vaughan, P. R.(1981). “The drained residual strength of the cohesive soils.” Geotechnique, 31(2), 181–213.
Maksimovic, M.(1989). “On the residual shearing strength of clays.” Geotechnique, 39(2), 347–351.
Sassa, K. (1996). “Prediction of earthquake induced landslides.” Proc., 7th Int. Symp. on Landslides, Balkema, Rotterdam, The Netherlands, 1, 115–132.
Skempton, A. W.(1985). “Residual strength of clays in landslides, folded strata and the laboratory.” Geotechnique, 35(1), 3–18.
Stark, T. D., and Eid, H. T.(1994). “Drained residual strength of cohesive soils.” J. Geotech. Eng., 120(5), 856–871.
Tika, T. E., Lamos, J., and Vaughan, P. R.(1996). “Fast shearing of pre-existing shear zones in soil.” Geotechnique, 46(2), 197–234.
Tiwari, B., and Marui, H. (2000). “A reliable way to assign shear strength parameters during landslide analysis.” Proc., Int. Conf. on Geotechnical and Geological Engineering (GeoEngg2000), CD-ROM, Melbourne, Australia, 3 (SNES1089), 1–6.
Tiwari, B., and Marui, H. (2001). “Shearing behavior of landslide sliding surface and main scarp soil during drained ring shear test.” Proc., XVth Int. Conf. of Int. Society of Soil Mechanics and Geotechnical Engineering, ISSMGE, Istanbul, Turkey, 1, 1–6.
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Published In
Journal of Geotechnical and Geoenvironmental Engineering
Volume 130 • Issue 2 • February 2004
Pages: 217 - 222
Copyright
Copyright © 2004 American Society of Civil Engineers.
History
Received: Jan 15, 2002
Accepted: May 27, 2003
Published online: Jan 16, 2004
Published in print: Feb 2004
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