Effects of overconsolidation ratios on the shear strength of remoulded slip surface soils in ring shear
Identifieur interne : 000318 ( Main/Exploration ); précédent : 000317; suivant : 000319Effects of overconsolidation ratios on the shear strength of remoulded slip surface soils in ring shear
Auteurs : Shriwantha Buddhi Vithana [Japon] ; Shinya Nakamura [Japon] ; Sho Kimura [Japon] ; Seiichi Gibo [Japon]Source :
- Engineering geology [ 0013-7952 ] ; 2012.
Descripteurs français
- Pascal (Inist)
- Wicri :
- topic : Minéralogie.
English descriptors
- KwdEn :
Abstract
The drained shear strength of clay soils is independent of stress history, though there have been instances in the geotechnical literature of studies that have suggested some dependence of stress history on the drained shear strength. Accordingly, the effect of artificial overconsolidation ratios (OCR) on the drained shear behaviour and shear strength of a high plasticity clay soil and a loess soil has been discussed from an experimental point of view. The slip surface materials of two landslides were remoulded and consolidated from slurry and were subjected to drained shear tests. Four overconsolidation ratios (OCR 1, OCR 2, OCR 4 and OCR 6) were tested under constant effective normal stress in a ring shear apparatus. The overconsolidated specimens achieved peak friction coefficients at relatively lesser shear displacements in contrast to the normally consolidated specimens in the Kamenose soil. The fully softened friction coefficient and the residual friction coefficient showed stress dependency in the OCR 1 bloc of both soils. However, between the two soils, although dissimilar patterns of variation of these two shear strength parameters in the overconsolidated state compared to the normally consolidated state was evident, significant differences in the residual friction coefficient attributable to overconsolidation were not found.
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903-0213</s2><s3>JPN</s3><sZ>2 aut.</sZ><sZ>3 aut.</sZ></inist:fA14><country>Japon</country><wicri:noRegion>Nishihara-cho, Okinawa 903-0213</wicri:noRegion></affiliation></author><author><name sortKey="Kimura, Sho" sort="Kimura, Sho" uniqKey="Kimura S" first="Sho" last="Kimura">Sho Kimura</name><affiliation wicri:level="1"><inist:fA14 i1="02"><s1>University of the Ryukyus, Senbaru-1</s1><s2>Nishihara-cho, Okinawa 903-0213</s2><s3>JPN</s3><sZ>2 aut.</sZ><sZ>3 aut.</sZ></inist:fA14><country>Japon</country><wicri:noRegion>Nishihara-cho, Okinawa 903-0213</wicri:noRegion></affiliation></author><author><name sortKey="Gibo, Seiichi" sort="Gibo, Seiichi" uniqKey="Gibo S" first="Seiichi" last="Gibo">Seiichi Gibo</name><affiliation wicri:level="1"><inist:fA14 i1="03"><s1>Okinawa Study Centre, The Open University of Japan, Senbaru-1</s1><s2>Nishihara-cho, Okinawa 903-0213</s2><s3>JPN</s3><sZ>4 aut.</sZ></inist:fA14><country>Japon</country><wicri:noRegion>Nishihara-cho, Okinawa 903-0213</wicri:noRegion></affiliation></author></titleStmt><publicationStmt><idno type="wicri:source">INIST</idno><idno type="inist">12-0379999</idno><date when="2012">2012</date><idno type="stanalyst">PASCAL 12-0379999 INIST</idno><idno type="RBID">Pascal:12-0379999</idno><idno type="wicri:Area/PascalFrancis/Corpus">000080</idno><idno type="wicri:Area/PascalFrancis/Curation">000692</idno><idno type="wicri:Area/PascalFrancis/Checkpoint">000080</idno><idno type="wicri:doubleKey">0013-7952:2012:Buddhi Vithana S:effects:of:overconsolidation</idno><idno type="wicri:Area/Main/Merge">000321</idno><idno type="wicri:Area/Main/Curation">000318</idno><idno type="wicri:Area/Main/Exploration">000318</idno></publicationStmt><sourceDesc><biblStruct><analytic><title xml:lang="en" level="a">Effects of overconsolidation ratios on the shear strength of remoulded slip surface soils in ring shear</title><author><name sortKey="Buddhi Vithana, Shriwantha" sort="Buddhi Vithana, Shriwantha" uniqKey="Buddhi Vithana S" first="Shriwantha" last="Buddhi Vithana">Shriwantha Buddhi Vithana</name><affiliation wicri:level="1"><inist:fA14 i1="01"><s1>The United Graduate School of Agricultural Sciences, Kagoshima University, University of the Ryukyus, Senbaru-1</s1><s2>Nishihara-cho, Okinawa 903-0213</s2><s3>JPN</s3><sZ>1 aut.</sZ></inist:fA14><country>Japon</country><wicri:noRegion>Nishihara-cho, Okinawa 903-0213</wicri:noRegion></affiliation></author><author><name sortKey="Nakamura, Shinya" sort="Nakamura, Shinya" uniqKey="Nakamura S" first="Shinya" last="Nakamura">Shinya Nakamura</name><affiliation wicri:level="1"><inist:fA14 i1="02"><s1>University of the Ryukyus, Senbaru-1</s1><s2>Nishihara-cho, Okinawa 903-0213</s2><s3>JPN</s3><sZ>2 aut.</sZ><sZ>3 aut.</sZ></inist:fA14><country>Japon</country><wicri:noRegion>Nishihara-cho, Okinawa 903-0213</wicri:noRegion></affiliation></author><author><name sortKey="Kimura, Sho" sort="Kimura, Sho" uniqKey="Kimura S" first="Sho" last="Kimura">Sho Kimura</name><affiliation wicri:level="1"><inist:fA14 i1="02"><s1>University of the Ryukyus, Senbaru-1</s1><s2>Nishihara-cho, Okinawa 903-0213</s2><s3>JPN</s3><sZ>2 aut.</sZ><sZ>3 aut.</sZ></inist:fA14><country>Japon</country><wicri:noRegion>Nishihara-cho, Okinawa 903-0213</wicri:noRegion></affiliation></author><author><name sortKey="Gibo, Seiichi" sort="Gibo, Seiichi" uniqKey="Gibo S" first="Seiichi" last="Gibo">Seiichi Gibo</name><affiliation wicri:level="1"><inist:fA14 i1="03"><s1>Okinawa Study Centre, The Open University of Japan, Senbaru-1</s1><s2>Nishihara-cho, Okinawa 903-0213</s2><s3>JPN</s3><sZ>4 aut.</sZ></inist:fA14><country>Japon</country><wicri:noRegion>Nishihara-cho, Okinawa 903-0213</wicri:noRegion></affiliation></author></analytic><series><title level="j" type="main">Engineering geology</title><title level="j" type="abbreviated">Eng. geol.</title><idno type="ISSN">0013-7952</idno><imprint><date when="2012">2012</date></imprint></series></biblStruct></sourceDesc><seriesStmt><title level="j" type="main">Engineering geology</title><title level="j" type="abbreviated">Eng. geol.</title><idno type="ISSN">0013-7952</idno></seriesStmt></fileDesc><profileDesc><textClass><keywords scheme="KwdEn" xml:lang="en"><term>Displacement</term><term>Friction coefficient</term><term>Grain size distribution</term><term>Mineralogy</term><term>Overconsolidated soil</term><term>Residual stress</term><term>Shear strength</term><term>Slip surface</term><term>Soil test</term><term>Texture</term></keywords><keywords scheme="Pascal" xml:lang="fr"><term>Essai sol</term><term>Résistance cisaillement</term><term>Sol surconsolidé</term><term>Surface glissement</term><term>Contrainte résiduelle</term><term>Minéralogie</term><term>Texture</term><term>Granularité</term><term>Coefficient frottement</term><term>Déplacement</term></keywords><keywords scheme="Wicri" type="topic" xml:lang="fr"><term>Minéralogie</term></keywords></textClass></profileDesc></teiHeader><front><div type="abstract" xml:lang="en">The drained shear strength of clay soils is independent of stress history, though there have been instances in the geotechnical literature of studies that have suggested some dependence of stress history on the drained shear strength. Accordingly, the effect of artificial overconsolidation ratios (OCR) on the drained shear behaviour and shear strength of a high plasticity clay soil and a loess soil has been discussed from an experimental point of view. The slip surface materials of two landslides were remoulded and consolidated from slurry and were subjected to drained shear tests. Four overconsolidation ratios (OCR 1, OCR 2, OCR 4 and OCR 6) were tested under constant effective normal stress in a ring shear apparatus. The overconsolidated specimens achieved peak friction coefficients at relatively lesser shear displacements in contrast to the normally consolidated specimens in the Kamenose soil. The fully softened friction coefficient and the residual friction coefficient showed stress dependency in the OCR 1 bloc of both soils. However, between the two soils, although dissimilar patterns of variation of these two shear strength parameters in the overconsolidated state compared to the normally consolidated state was evident, significant differences in the residual friction coefficient attributable to overconsolidation were not found.</div></front></TEI><affiliations><list><country><li>Japon</li></country></list><tree><country name="Japon"><noRegion><name sortKey="Buddhi Vithana, Shriwantha" sort="Buddhi Vithana, Shriwantha" uniqKey="Buddhi Vithana S" first="Shriwantha" last="Buddhi Vithana">Shriwantha Buddhi Vithana</name></noRegion><name sortKey="Gibo, Seiichi" sort="Gibo, Seiichi" uniqKey="Gibo S" first="Seiichi" last="Gibo">Seiichi Gibo</name><name sortKey="Kimura, Sho" sort="Kimura, Sho" uniqKey="Kimura S" first="Sho" last="Kimura">Sho Kimura</name><name sortKey="Nakamura, Shinya" sort="Nakamura, Shinya" uniqKey="Nakamura S" first="Shinya" last="Nakamura">Shinya Nakamura</name></country></tree></affiliations></record>Pour manipuler ce document sous Unix (Dilib)
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