MODELISATION DES CONTACTS DANS LE CALCUL TRIDIMENSIONNEL DES OUVRAGES GEOTECHNIQUES PDF Download

Author: NABILA.. SELLALI HARAIGUE
Publisher:
ISBN:
Category :
Languages : fr
Pages : 297

View

Book Description
CE MEMOIRE EST CONSACRE A LA MODELISATION DES INTERFACES DANS LES CALCULS TRIDIMENSIONNELS EN ELEMENTS FINIS D'OUVRAGES GEOTECHNIQUES (OUVRAGES EN SOL RENFORCE, CONTACTS DE MATERIAUX DIFFERENTS, ETC.). IL S'APPUIE SUR DES TRAVAUX ANTERIEURS DU LABORATOIRE CENTRAL DES PONTS ET CHAUSSEES QUI AVAIENT PRODUIT DES MODULES DU LOGICIEL CESAR-LCPC CONSACRES AU CONTACT ENTRE SOLIDES ELASTIQUES (TACT) ET ENTRE SOLIDES ELASTOPLASTIQUES (TCNL). CETTE RECHERCHE A DEVELOPPE UNE AUTRE LOI DE COMPORTEMENT D'INTERFACE DE TYPE ELASTOPLASTIQUE QUI SE COMBINE HARMONIEUSEMENT AVEC LES LOIS DE COMPORTEMENT UTILISEES POUR LES SOLS ET LES STRUCTURES EN CONTACT. CETTE LOI D'INTERFACE A ETE PROGRAMMEE DANS UN NOUVEAU MODULE DE CALCUL (MCNL-C). L'ANALYSE TRIDIMENSIONNELLE EN ELEMENTS FINIS D'UN MUR EXPERIMENTAL EN TERRE ARMEE, EDIFIE A BOURRON-MARLOTTE, CONTRIBUE A VALIDER CES DEVELOPPEMENTS NUMERIQUES. LA COMPARAISON DE CE CALCUL A UNE ETUDE BIDIMENSIONNELLE DU MEME PROBLEME MONTRE, D'UNE MANIERE GENERALE, UNE MEILLEURE CONCORDANCE DE L'ANALYSE TRIDIMENSIONNELLE AVEC LES RESULTATS EXPERIMENTAUX, NOTAMMENT EN TERMES DE TRACTION DANS LES ARMATURES ET DE PLASTICITE DANS L'OUVRAGE. CES RESULTATS ILLUSTRENT L'APPORT D'UNE MODELISATION PLUS REALISTE DES INTERFACES AUTOUR DE L'ARMATURE LINEAIRE DANS LA MODELISATION TRIDIMENSIONNELLE DE CE TYPE D'OUVRAGES.

Author: Philippe Mestat
Publisher:
ISBN:
Category :
Languages : en
Pages : 358

View

Book Description
Les activités de recherche présentées portent sur différents aspects de la modélisation numérique appliquée au calcul des ouvrages de géotechnique. Les thèmes abordés concernent: le développement d'un module de calcul en comportement non linéaire au sein du logiciel par éléments finis CESAR-LCPC ; le développement de trois autres modules de calcul basés sur le précédent ; l'utilisation des lois de comportement non linéaire et la manière de déterminer les valeurs de leurs paramètres; l'élaboration d'un référentiel de tests pour la vérification du bon fonctionnement des logiciels de calcul; la validation des modèles numériques d'ouvrages par rapport à des mesures réalisées en vraie grandeur. Ces recherches, menées en partenariat ou non, ont abouti à six outils opérationnels mis à la disposition des chercheurs et des ingénieurs impliqués dans la modélisation en géotechnique: trois logiciels inclus dans CESAR-LCPC; un référentiel de tests; une méthodologie de détermination des valeurs des paramètres et la base de données MOMIS, recensant les modélisations d'ouvrages par éléments finis et leurs confrontations avec des mesures.

Author: Ronald B.J. Brinkgreve
Publisher: CRC Press
ISBN: 9789058090409
Category : Technology & Engineering
Languages : en
Pages : 336

View

Book Description
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.

Author: Christine Detournay
Publisher: CRC Press
ISBN: 1000100286
Category : Science
Languages : en
Pages : 529

View

Book Description
Sixty-five papers cover a wide range of topics from engineering applications to theoretical developments in the areas of embankment and slope stability, underground cavity design and mining; dynamic analysis, soil and structure interaction, and coupled processes and fluid flow.

Author: CIGB ICOLD
Publisher: CRC Press
ISBN: 0429877579
Category : Technology & Engineering
Languages : en
Pages : 4571

View

Book Description
The International Committee on Large Dams (ICOLD) held its 26th International Congress in Vienna, Austria (1-7 July 2018). The proceedings of the congress focus on four main questions: 1. Reservoir sedimentation and sustainable development; 2. Safety and risk analysis; 3. Geology and dams, and 4. Small dams and levees. The book thoroughly discusses these questions and is indispensable for academics, engineers and professionals involved or interested in engineering, hydraulic engineering and related disciplines.

Author: Pietro Lunardi
Publisher: Springer Science & Business Media
ISBN: 3540738754
Category : Science
Languages : en
Pages : 580

View

Book Description
This work illustrates how the Analysis of Controlled Deformation in Rocks and Soils (ADECO-RS) is used in the design and the construction of tunnels. This is a very new and effective way of tunnel construction. The ADECO-RS approach makes a clear distinction between the design and the construction stages and allows reliable forecasts of construction times and costs to be made. It uses the advance core (the core of ground ahead of the face) as a structural tool for the long and short term stabilisation of tunnels, after its rigidity has first been regulated using conservation techniques.

Author: Vittorio Guglielmetti
Publisher: CRC Press
ISBN: 1134110561
Category : Technology & Engineering
Languages : en
Pages : 529

View

Book Description
Internationally, the mechanized excavation of tunnels has intensified in the last two decades, as the number of tunnels being constructed for subways and railway underpasses increases. The subject of mechanized tunnelling in urban areas has not previously received the attention that it deserves, despite there being specific hazards associated with the construction of tunnels in metropolitan areas, including poor ground conditions, water tables higher than the level of tunnels, and subsidence leading to damage to the existing structures on the surface. The application of technologies for achieving the stability of the tunnel and for minimizing surface settlement is described in this book. Accurate characterization of the ground; rigorous assessment and management of risk from design to maintenance; the correct choice of a tunnel boring machine and a plan for the advancement of the tunnel; specific excavation procedures and real-time monitoring of excavation parameters are all discussed in this thorough work.

Author: W.S. Hall
Publisher: Springer Science & Business Media
ISBN: 0306483874
Category : Technology & Engineering
Languages : en
Pages : 429

View

Book Description
W S HALL School of Computing and Mathematics, University of Teesside, Middlesbrough, TS1 3BA UK G OLIVETO Division of Structural Engineering, Department of Civil and Environmental Engineering, University of Catania, Viale A. Doria 6, 95125 Catania, Italy Soil-Structure Interaction is a challenging multidisciplinary subject which covers several areas of Civil Engineering. Virtually every construction is connected to the ground and the interaction between the artefact and the foundation medium may affect considerably both the superstructure and the foundation soil. The Soil-Structure Interaction problem has become an important feature of Structural Engineering with the advent of massive constructions on soft soils such as nuclear power plants, concrete and earth dams. Buildings, bridges, tunnels and underground structures may also require particular attention to be given to the problems of Soil-Structure Interaction. Dynamic Soil-Structure Interaction is prominent in Earthquake Engineering problems. The complexity of the problem, due also to its multidisciplinary nature and to the fact of having to consider bounded and unbounded media of different mechanical characteristics, requires a numerical treatment for any application of engineering significance. The Boundary Element Method appears to be well suited to solve problems of Soil- Structure Interaction through its ability to discretize only the boundaries of complex and often unbounded geometries. Non-linear problems which often arise in Soil-Structure Interaction may also be treated advantageously by a judicious mix of Boundary and Finite Element discretizations.

Author: K. Iwashita
Publisher: CRC Press
ISBN: 1000150518
Category : Study Aids
Languages : en
Pages : 408

View

Book Description
This textbook compiles reports written by about 35 internationally recognized authorities, and covers a range of interests for geotechnical engineers. Topics include: fundamentals for mechanics of granular materials; continuum theory of granular materials; and discrete element approaches.

Author: Bernhard Maidl
Publisher: John Wiley & Sons
ISBN: 3433601496
Category : Technology & Engineering
Languages : en
Pages : 489

View

Book Description
Mechanised shield tunnelling has developed considerably since the publication of the first edition of this book. Challenging tunnel projects under difficult conditions demand innovative solutions, which has led to constant further development and innovation in process technology, constructions operations and the machines and materials used. The book collects the latest state of technology in mechanised shield tunnelling. It describes the basics of mechanised tunnelling technology and the various types of machines and gives calculation methods and constructural advice. Further chapters cover excavation tools, muck handling, tunnel support, surveying and steering as well as workplace safety. There is also detailled information about contractual aspects and process controlling.