Download or read book Mod lisation num rique des sols lastoplastiques non satur s written by Odile Ozanam and published by . This book was released on 1988 with total page 252 pages. Available in PDF, EPUB and Kindle. Book excerpt: Modélisation du comportement mécanique et hydraulique des milieux poreux non saturés. Approche par homogénéisation (milieux homogène équivalent). Modélisation par éléments finis d'un problème de conditions aux limites, avec éléments particuliers d'interface pour les surfaces potentielles de suintement. Etude complète d'un barrage en remblai (construction, remplissage, vidange), avec divers degrés de saturation initiale du noyau en argile

Download or read book Etude num rique de la mod lisation thermo elasto plastique des sols non satur s written by Bahar Jenab-Vossoughi and published by . This book was released on 2006 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Mod lisation num rique des sols lastoplastiques non satur s application aux barrages en remblais written by Odile Ozanam-Hautefeuille and published by . This book was released on 1988 with total page 252 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Contribution la r solution de probl mes lastoplastiques de m canique des sols et d coulements non satur s par la m thode des l ments finis written by Stephane Bonelli and published by . This book was released on 1993 with total page 506 pages. Available in PDF, EPUB and Kindle. Book excerpt: Cette étude s'est déroulée au sein de l'équipe "Modèles Numériques" de l'institut méditerranéen de technologie. Elle s'inscrit dans la motivation actuelle de la communauté scientifique, dont le CEMAGREF, a pouvoir bien simuler un ouvrage de type barrage en terre. Le choix d'un bon modèle de sol (difficulté majeure) n'est pas discute dans ce travail. L'effort est essentiellement porté sur les outils numériques permettant de dégager plus de temps sur la pré- ou post-étude (le vrai problème d'ingénierie), en réalisant des simulations fortement non linéaires avec un confort appréciable et une précision satisfaisante. L'écriture des lois de bilan d'un milieu poreux déformable polyphasique permet de lister les hypothèses sous-jacentes des modeles usuels, d'introduire les outils de travail heuristiques (principe de Terzaghi, loi de Darcy), et de mettre en évidence les lacunes actuelles de compréhension, de modélisation et d'identification. On tente une approche unifiée des outils classiques utilises en élastoplasticité pour décrire le comportement mécanique des sols satures parfaitement draines. Le modèle CJS (Cambou/Jafari/Sidoroff) pour les sols non cohérents est expose. L'étude formelle des lois élastoplastiques multimécanismes non standard est réalisée: après une rapide analyse de l'existence et de l'unicité en vitesse de variables internes pour une vitesse de déformation donnée, on met le problème sous la forme connue d'une équation différentielle ordinaire ou algébrique. La résolution numérique de problèmes aux limites de type élastoplastique ou écoulement non sature est exposée; elle est mise en oeuvre dans le code aux éléments finis SIC.2 developpé a l'université de technologie de Compiègne. On propose plusieurs méthodes originales, que l'on compare a d'autres codes de calcul, a des résultats expérimentaux ou a des relevés in situ.

Download or read book Proceedings of the 16th International Conference on Soil Mechanics and Geotechnical Engineering written by The Organizing Committee of the 16th ICSMGE and published by IOS Press. This book was released on 2005-09-12 with total page 3742 pages. Available in PDF, EPUB and Kindle. Book excerpt: The 16th ICSMGE responds to the needs of the engineering and construction community, promoting dialog and exchange between academia and practice in various aspects of soil mechanics and geotechnical engineering. This is reflected in the central theme of the conference 'Geotechnology in Harmony with the Global Environment'. The proceedings of the conference are of great interest for geo-engineers and researchers in soil mechanics and geotechnical engineering. Volume 1 contains 5 plenary session lectures, the Terzaghi Oration, Heritage Lecture, and 3 papers presented in the major project session. Volumes 2, 3, and 4 contain papers with the following topics: Soil mechanics in general; Infrastructure and mobility; Environmental issues of geotechnical engineering; Enhancing natural disaster reduction systems; Professional practice and education. Volume 5 contains the report of practitioner/academic forum, 20 general reports, a summary of the sessions and workshops held during the conference.

Download or read book Contribution la mod lisation du comportement plastique des sols partiellement satur s pour le calcul num rique des charges limites written by Mehrez Jamei and published by . This book was released on 1993 with total page 136 pages. Available in PDF, EPUB and Kindle. Book excerpt: LE COUPLAGE DES SOLLICITATIONS MECANIQUES ET HYDRIQUES A FAIT DANS CETTE DERNIERE DECENNIE L'OBJET DE PLUSIEURS TRAVAUX. LA MODELISATION DE CE PROBLEME COMPLEXE RESTE LIMITEE PAR PLUSIEURS HYPOTHESES RESTRICTIVES. EN SE BASANT SUR LES RESULTATS EXPERIMENTAUX DE LA LITTERATURE CONCERNANT LE COMPORTEMENT DES SOLS PARTIELLEMENT SATURES, NOUS PROPOSONS UNE MODELISATION EN PLASTICITE, QUE NOUS METTONS EN UVRE EN APPLIQUANT LA METHODE CINEMATIQUE DE L'ANALYSE LIMITE. LA MODELISATION PROPOSEE RETIENT LE PRINCIPE DES CONTRAINTES EFFECTIVES DANS UN DOMAINE DE SUCCIONS ETENDU DEFINI COMME L'UNION DU DOMAINE TOTALEMENT SATURE ET D'UN DOMAINE QUASI SATURE CARACTERISE PAR SA BORNE SUPERIEURE QUI EST UNE SUCCION CRITIQUE. DANS LE DOMAINE OU LA SUCCION S EST SUPERIEURE A LA SUCCION CRITIQUE, NOUS NOUS BASONS SUR LE PRINCIPE DES VARIABLES INDEPENDANTES (INDEPENDANCE DE LA CONTRAINTE TOTALE, DE LA PRESSION DE LA PHASE GAZEUSE ET DE LA PHASE LIQUIDE) POUR PROPOSER UNE GENERALISATION DU CRITERE DE COULOMB (L'ANGLE DE FROTTEMENT ET LA COHESION DEVIENNENT FONCTION DE LA SUCCION) D'UNE PART, ET LA DEFINITION D'UN CRITERE DE PLASTICITE ISSU DE LA GENERALISATION DU CONCEPT DE L'ETAT CRITIQUE (CRITERE DE TYPE DRUCKER-PRAGUER) D'AUTRE PART. LE COUPLAGE HYDRO-MECANIQUE S'EFFECTUE DONC PAR LE BIAIS DU CRITERE DE PLASTICITE. LA MISE EN UVRE NUMERIQUE DE CETTE MODELISATION COMPORTE DEUX PARTIES: LA PREMIERE CONCERNE LA DETERMINATION DU CHAMP DE SUCCION (RESOLUTION DE L'EQUATION DE RICHARDS PAR UNE METHODE D'ELEMENTS FINIS OU D'ELEMENTS FRONTIERE DANS DES CAS PARTICULIERS); LA SECONDE, LA DETERMINATION DES CHARGES LIMITES (RESOLUTION D'UN PROBLEME D'OPTIMISATION NON LINEAIRE). CETTE MISE EN UVRE EST SUIVIE D'UNE ETUDE SUR LA PRECISION, LA CONVERGENCE DES DIFFERENTS ALGORITHMES UTILISES, QUI MET EN EVIDENCE L'INFLUENCE DE LA SINGULARITE DES CONTRAINTES MATHEMATIQUES ET CELLE DE LA DILATANCE EXCESSIVE INDUITE PAR L'HYPOTHESE DE LA REGLE D'ECOULEMENT NORMALE. LES RESULTATS NUMERIQUES OBTENUS AVEC LE CRITERE DE COULOMB GENERALISE, POUR UN ESSAI DE COMPRESSION SIMPLE, SONT EN BON ACCORD AVEC DES RESULTATS EXPERIMENTAUX (ESSAIS TRIAXIAUX REALISES PAR Y. CUI ET DELAGE AVEC UN SOL FIN). EN REVANCHE, UNE COMPARAISON ANALOGUE INFIRME LA VALIDITE DU CRITERE DE TYPE DRUCKER-PRAGUER POUR LE MATERIAU CONSIDERE. UN CALCUL TRANSITOIRE EFFECTUE AVEC DEUX FONCTIONS PERMEABILITE RELATIVE DIFFERENTES, MONTRE L'INFLUENCE DU CHOIX DU TENSEUR DE PERMEABILITE. LES POTENTIALITES DU CODE DE CALCUL DEVELOPPE SONT ILLUSTREES PAR DES APPLICATIONS A DES PROBLEMES DE MECANIQUE DES SOLS DIVERS (ENFONCEMENT D'UN OBJET DANS UN SOL SOUS-MARIN, STABILITE DE TALUS RENFORCES, FORCE PORTANTE D'UN SOL SOUMIS A DES SOLLICITATIONS SISMIQUES). LES RESULTATS OBTENUS SONT EN GENERAL SATISFAISANTS

Download or read book Continuum Mechanics and Applications in Geophysics and the Environment written by Brian Straughan and published by Springer Science & Business Media. This book was released on 2001-03-13 with total page 418 pages. Available in PDF, EPUB and Kindle. Book excerpt: The topics covered include soil mechanics and porous media, glacier and ice dynamics, climatology and lake physics, climate change as well as numerical algorithms. The book, written by well-known experts, addresses researchers and students interested in physical aspects of our environment.

Download or read book Landslides Theory Practice and Modelling written by S.P. Pradhan and published by Springer. This book was released on 2018-06-28 with total page 322 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book, with contributions from international landslide experts, presents in-depth knowledge of theories, practices, and modern numerical techniques for landslide analysis. Landslides are a reoccurring problem across the world and need to be properly studied for their mitigation and control. Due to increased natural and anthropogenic activities, chances of landslide occurrence and associated hazards have increased. The book focuses on landslide dynamics, mechanisms and processes along with hazard mitigation using geo-engineering, structural, geophysical and numerical tools. The book contains a wealth of the latest information on all aspects of theory, practices and modelling tools and techniques involved in prediction, prevention, monitoring, mitigation and risk analysis of landslide hazards. This book will bring the reader up to date on the latest trends in landslide studies and will help planners, engineers, scientists and researchers working on landslide engineering.

Download or read book Terra 2008 written by Leslie Rainer and published by Getty Publications. This book was released on 2011-06-14 with total page 438 pages. Available in PDF, EPUB and Kindle. Book excerpt: Earthen architecture constitutes one of the most diverse forms of cultural heritage and one of the most challenging to preserve. It dates from all periods and is found on all continents but is particularly prevalent in Africa, where it has been a building tradition for centuries. Sites range from ancestral cities in Mali to the palaces of Abomey in Benin, from monuments and mosques in Iran and Buddhist temples on the Silk Road to Spanish missions in California. This volume's sixty-four papers address such themes as earthen architecture in Mali, the conservation of living sites, local knowledge systems and intangible aspects, seismic and other natural forces, the conservation and management of archaeological sites, research advances, and training.

Download or read book Comptes rendus de l Acad mie des sciences written by and published by . This book was released on 1995 with total page 588 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Beyond 2000 in Computational Geotechnics written by Ronald B.J. Brinkgreve and published by Routledge. This book was released on 2019-01-22 with total page 336 pages. Available in PDF, EPUB and Kindle. Book excerpt: This volume contains papers presented during the first international PLAXIS symposium. Topics covered include: general geo-technical aspects; tunnels and deep excavations, and education and research. This pack is meant for the user of the PLAXIS program, as well as engineers and researchers.

Download or read book Landslide Risk Management written by Oldrich Hungr and published by CRC Press. This book was released on 2005-06-30 with total page 776 pages. Available in PDF, EPUB and Kindle. Book excerpt: Landslide Risk Management comprises the proceedings of the International Conference on Landslide Risk Management, held in Vancouver, Canada, from May 31 to June 3, 2005. The first part of the book contains state-of-the-art and invited lectures, prepared by teams of authors selected for their experience in specific topics assigned to them by the JTC

Download or read book Mechanics of Porous Media written by Philippe Charlez and published by CRC Press. This book was released on 1995-01-01 with total page 320 pages. Available in PDF, EPUB and Kindle. Book excerpt: This work presents the lecture notes of the 1994 Mechanics of Porous Media Summer School. Chapters cover theoretical basics, methods for measuring poroelastic coefficients, numerical implementation and applications.

Download or read book Underground Disposal of Radioactive Wastes written by International Atomic Energy Agency and published by . This book was released on 1981 with total page 68 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Behavior of Deep Foundations written by Raymond Lundgren and published by ASTM International. This book was released on 1979 with total page 621 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Mountain Risks From Prediction to Management and Governance written by Theo Van Asch and published by Springer Science & Business Media. This book was released on 2013-09-30 with total page 414 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book offers a cross disciplinary treatment of the rapidly growing field of integrated approaches in risk assessment in mountainous areas. All major aspects related to hazard and risk assessment, risk management, and governance are illustrated with a wide range of case studies. The first part of the book focuses on new techniques for assessing the natural hazards of different types of mass movements. State-of-the-art techniques for morphological characterization and monitoring of displacements are described. Computational advances are covered to explain the process systems and to quantify the hazards of fast and slow-moving landslides. In the second part of the book methodologies are included for assessing the impact of these natural hazards on the society in terms of risks. In this part, methodologies for defining the vulnerability of the elements at risk are shown and the use of run-out models for risk assessment of the dangerous rapid mass movements are evaluated. The third part of the book focuses on the response of society towards the problems of hazard and risk. It highlights the role of spatial planning, early warning systems and evacuation plans for risk management. It establishes practical thresholds for acceptable and tolerable risks and emphasizes the importance of education and communication to society. Audience The book is of interest to a wide range of experts from related disciplines, practitioners and stakeholders to demonstrate the importance of an integrated approach for all aspects of risks in mountainous areas.

Download or read book A Guide To Soil Mechanics written by Malcolm D Bolton and published by Universities Press. This book was released on 2013 with total page 464 pages. Available in PDF, EPUB and Kindle. Book excerpt: Covers all the soil mechanics and foundation engineering topics that are commonly included in civil engineering degree courses, and provides a number of springboards into related advanced topics. Although it is intended principally to satisfy the needs of student civil engineers, this guide should also prove useful to those practicing engineers who are unaware of the powerful and elegant reconstruction of the subject which has been made possible by the recent concepts of plasticity, dilatancy and critical states.