Author: Mašín, David

Source: Canadian Geotechnical Journal, Volume 44, Number 3, March 2007 , pp. 363-375(13)

Publisher: NRC Research Press

Abstract:

A new hypoplastic model for clays with meta-stable structure is presented in this paper. A new method for incorporation of structure effects into hypoplastic models based on the modification of barotropy and pyknotropy factors is proposed and applied to an existing hypoplastic model for reconstituted clays. The new model is characterized by a simple calibration procedure and a small number of parameters. This makes the model particularly suitable for practical applications. The model is evaluated using experimental data for two natural soft clays. Thanks to the incrementally nonlinear character of the hypoplastic equation, the proposed model predicts behaviour of overconsolidated clays comparably to advanced kinematic hardening elastoplastic models.Key words: constitutive relations, hypoplasticity, clays, structure of soils.

On présente dans cet article un nouveau modèle hypoplastique pour des argiles avec une métastructure. On propose une nouvelle méthode pour l'incorporation des effets de structure dans les modèles hypoplastiques basés sur la modification des facteurs de barotropie et de pyknotropie et on la met en application dans un modèle hypoplastique existant pour les argiles reconstituées. Le nouveau modèle est caractérisé par une simple procédure de calibrage et un petit nombre de paramètres. Ceci rend le modèle particulièrement approprié pour les applications pratiques. Le modèle est évalué au moyen de données expérimentales obtenues sur deux argiles molles naturelles. Grâce au caractère incrémentiel non-linéaire de l'équation hypoplastique, le modèle proposé prédit le comportement des argiles surconsolidées comparable à celui des modèles avancés élastoplastiques d'écrouissage cinématique.Mots clés : relations constitutives, hypoplasticité, argiles, structure des sols.

Document Type: Research article

Publication date: 2007-03-01

More about this publication?

• Published since 1963, this monthly journal features articles, notes, and discussions related to new developments in geotechnical and geoenvironmental engineering, and applied sciences. The topics of papers written by researchers, theoreticians, and engineers/scientists active in industry include soil and rock mechanics, material properties and fundamental behaviour, site characterization, foundations, excavations, tunnels, dams and embankments, slopes, landslides, geological and rock engineering, ground improvement, hydrogeology and contaminant hydrogeology, geochemistry, waste management, geosynthetics, offshore engineering, ice, frozen ground and northern engineering, risk and reliability applications, and physical and numerical modelling. Papers on actual case records from practice are encouraged and frequently featured.
• Information for Authors
• Submit a Paper
• Subscribe to this Title
• Terms & Conditions
• Sample Issue
• Reprints & Permissions
• ingentaconnect is not responsible for the content or availability of external websites

Related content

• In this: publication
• By this: publisher
• In this Subject: Geology ,  General & Civil Engineering
• By this author: Mašín, David

Website © Publishing Technology. Article copyright remains with the publisher, society or author(s) as specified within the article.

• Terms and conditions
• Privacy policy
• Information for advertisers