Visco-hypoplasticity and observational method for soft ground
Identifieur interne : 001763 ( Main/Exploration ); précédent : 001762; suivant : 001764Visco-hypoplasticity and observational method for soft ground
Auteurs : G. Gudehus [Allemagne]Source :
Descripteurs français
- Pascal (Inist)
English descriptors
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Abstract
For soils with soft particles, in particular clays, a visco-hypoplastic relation is introduced by numerical element tests. With a single set of equations for effective stress rates depending on strain rates, the known behaviour is obtained for oedometric compression and creep, undrained and drained shearing. OCR = pe/p' with an equivalent pressure pc depending on e and stress ratio is decisive. Only five key parameters are needed and can easily be determined. The natural consolidation of a soft layer can thus be followed up, and its subsequent consolidation and creep under a fill, including spreading and localization. The method is also realistic for a braced excavation in soft clay. This enables an enhanced observational method
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<record><TEI><teiHeader><fileDesc><titleStmt><title xml:lang="en" level="a">Visco-hypoplasticity and observational method for soft ground</title><author><name sortKey="Gudehus, G" sort="Gudehus, G" uniqKey="Gudehus G" first="G." last="Gudehus">G. Gudehus</name><affiliation wicri:level="1"><inist:fA14 i1="01"><s1>Institute of Soil and Rock Mechanics, University of Karlsruhe</s1><s3>DEU</s3><sZ>1 aut.</sZ></inist:fA14><country>Allemagne</country><wicri:noRegion>University of Karlsruhe</wicri:noRegion><wicri:noRegion>Institute of Soil and Rock Mechanics, University of Karlsruhe</wicri:noRegion></affiliation></author></titleStmt><publicationStmt><idno type="wicri:source">INIST</idno><idno type="inist">03-0453820</idno><date when="2003">2003</date><idno type="stanalyst">PASCAL 03-0453820 BRGM</idno><idno type="RBID">Pascal:03-0453820</idno><idno type="wicri:Area/PascalFrancis/Corpus">000589</idno><idno type="wicri:Area/PascalFrancis/Curation">000202</idno><idno type="wicri:Area/PascalFrancis/Checkpoint">000527</idno><idno type="wicri:Area/Main/Merge">001841</idno><idno type="wicri:Area/Main/Curation">001763</idno><idno type="wicri:Area/Main/Exploration">001763</idno></publicationStmt><sourceDesc><biblStruct><analytic><title xml:lang="en" level="a">Visco-hypoplasticity and observational method for soft ground</title><author><name sortKey="Gudehus, G" sort="Gudehus, G" uniqKey="Gudehus G" first="G." last="Gudehus">G. Gudehus</name><affiliation wicri:level="1"><inist:fA14 i1="01"><s1>Institute of Soil and Rock Mechanics, University of Karlsruhe</s1><s3>DEU</s3><sZ>1 aut.</sZ></inist:fA14><country>Allemagne</country><wicri:noRegion>University of Karlsruhe</wicri:noRegion><wicri:noRegion>Institute of Soil and Rock Mechanics, University of Karlsruhe</wicri:noRegion></affiliation></author></analytic></biblStruct></sourceDesc></fileDesc><profileDesc><textClass><keywords scheme="KwdEn" xml:lang="en"><term>constitutive equation</term><term>displacements</term><term>engineering supports</term><term>excavations</term><term>soft clays</term><term>soft soils</term></keywords><keywords scheme="Pascal" xml:lang="fr"><term>Sol mou</term><term>Equation constitutive</term><term>Déplacement</term><term>Excavation</term><term>Argile molle</term><term>Soutènement</term><term>Hypoplasticité</term><term>Remplissage barrage</term></keywords></textClass></profileDesc></teiHeader><front><div type="abstract" xml:lang="en">For soils with soft particles, in particular clays, a visco-hypoplastic relation is introduced by numerical element tests. With a single set of equations for effective stress rates depending on strain rates, the known behaviour is obtained for oedometric compression and creep, undrained and drained shearing. OCR = p<sub>e</sub>/p' with an equivalent pressure p<sub>c</sub> depending on e and stress ratio is decisive. Only five key parameters are needed and can easily be determined. The natural consolidation of a soft layer can thus be followed up, and its subsequent consolidation and creep under a fill, including spreading and localization. The method is also realistic for a braced excavation in soft clay. This enables an enhanced observational method</div></front></TEI><affiliations><list><country><li>Allemagne</li></country></list><tree><country name="Allemagne"><noRegion><name sortKey="Gudehus, G" sort="Gudehus, G" uniqKey="Gudehus G" first="G." last="Gudehus">G. Gudehus</name></noRegion></country></tree></affiliations></record>Pour manipuler ce document sous Unix (Dilib)
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