Etude exp rimentale et num rique des transferts de charge dans un massif renforc par inclusions rigides

Titre : Etude exp rimentale et num rique des transferts de charge dans un massif renforc par inclusions rigides
Auteur : Umur Salih Okyay
Éditeur :
ISBN-13 : OCLC:800823245
Libération : 2010

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La technique de renforcement par inclusions rigides constitue une réponse pertinente aux problèmes de sols compressibles. Elle consiste à transférer les charges de l'ouvrage renforcé vers une couche de sol résistante et peu compressible. Le transfert des charges se fait par la combinaison d'inclusions rigides traversant le sol compressible et d'un matelas intercalé entre le réseau d'inclusions rigides et l'ouvrage. La technique de renforcement par inclusions rig ides est adaptée pour des ouvrages de types remblais, dallages, zones industrielles, stations d'épuration. Ce travail de thèse vise à améliorer la compréhension des phénomènes des transferts de charge dans les massifs renforcés par inclusions rigides. Le comportement mécanique des sols pulvérulents et cohérents qui constituent le matelas de répartition a été caractérisé à l'aide d'essais en laboratoire. Des essais en centrifugeuse ont ensuite été réalisés afin de comprendre l'influence des caractéristiques mécaniques du matelas et la configuration géométrique d'un réseau d'inclusions rigides sur les mécanismes de transfert. Des approches numériques s'appuyant sur des calculs par éléments finis et par différences finies sont présentées. La modélisation numérique des essais en centrifugeuse fournit des informations sur le fonctionnement des inclusions rigides dans le cas du remblai et du dallage et permet de comprendre les mécanismes de transfert des charges avec des matelas de répartition constitués de matériaux pulvérulents et cohérents. Les paramètres géométriques des inclusions rigides ainsi que les caractéristiques mécaniques du matelas de répartition sont étudiés. Le comportement dynamique des inclusions rigides est étudié. L'impédance verticale et horizontale d'un réseau d'inclusion rigide est analysée avec une étude paramétrique. Une analyse dynamique d'un réseau d'inclusions est présentée afin d'étudier l'influence des conditions d'ancrage en pied et liaison en tête sur le comportement dynamique.

Studia Geotechnica Et Mechanica

Titre : Studia Geotechnica Et Mechanica
Auteur :
Éditeur :
ISBN-13 : CORNELL:31924090516851
Libération : 2006

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A été écrit sous une forme ou une autre pendant la plus grande partie de sa vie. Vous pouvez trouver autant d'inspiration de Studia Geotechnica Et Mechanica Aussi informatif et amusant. Cliquez sur le bouton TÉLÉCHARGER ou Lire en ligne pour obtenir gratuitement le livre de titre $ gratuitement.

Bulletin signal tique

Titre : Bulletin signal tique
Auteur :
Éditeur :
ISBN-13 : UOM:39015085498130
Libération : 1971

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A été écrit sous une forme ou une autre pendant la plus grande partie de sa vie. Vous pouvez trouver autant d'inspiration de Bulletin signal tique Aussi informatif et amusant. Cliquez sur le bouton TÉLÉCHARGER ou Lire en ligne pour obtenir gratuitement le livre de titre $ gratuitement.

Deformation Characteristics of Geomaterials

Titre : Deformation Characteristics of Geomaterials
Auteur : V.A. Rinaldi
Éditeur : IOS Press
ISBN-13 : 9781614996019
Libération : 2015-12-11

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In November 2015, Buenos Aires, Argentina became the location of several important events for geo-professionals, with the simultaneous holding of the 6th International Symposium on Deformation Characteristics of Geomaterials, the 15th Pan-American Conference on Soil Mechanics and Geotechnical Engineering (XV PCSMGE), the 8th South American Congress on Rock Mechanics (SCRM), as well as the 22nd Argentinean Congress of Geotechnical Engineering (CAMSIGXXII). This synergy provided a unique opportunity to exchange ideas and discuss current and future practices in the areas of soil mechanics and rock mechanics, and their applications in civil, energy, environmental, and mining engineering. This book presents the proceedings of the 6th International Symposium on Deformation Characteristics of Geomaterials. As well as 118 articles selected for publication after peer review, it includes 7 lectures delivered by invited keynote speakers and the Third Bishop Lecture, delivered by Professor Herve Di Benedetto of the University of Lyon, France, who presented a reference work on the advanced testing and modeling of bituminous bounded and unbounded granular materials. The conference brought together practitioners, researchers and educators from around the world engaged in the understanding of the deformation properties of geo-materials before failure, and the small strain parameters as fundamental characteristics of geo-materials. The main topics covered by the symposium include experimental investigations from very small strains to beyond failure, including multi-physical approach; HTC M coupling behavior, characterization and modeling of various geo-materials and interfaces; and practical prediction and interpretation of ground responses: field observation and case histories.

Fundamentals of Geosynthetic Engineering

Titre : Fundamentals of Geosynthetic Engineering
Auteur : Sanjay Kumar Shukla
Éditeur : CRC Press
ISBN-13 : 9780203968260
Libération : 2006-09-12

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The development of polymeric materials in the form of geosynthetics has brought major changes to the area of Civil Engineering. Increasing interest in these materials and their use has resulted in significant advances in their practical applications in the last few decades. Following this progress, geosynthetics have become a common and favoured construction component in present-day geotechnical engineering. A wide range of compositions is now used, with properties tailored to conditions required for application. Fundamentals of Geosynthetic Engineering provides an overview of the basic concepts of this fascinating and innovative subject area in a logical and illustrative way. This book guides the reader from basic description, manufacturing and material properties of the geosynthetics to their selection process and the major applications. It treats practical analysis and design concepts and provides guidelines for application. In addition, the quality control, field performance and monitoring of applied geosynthetics are discussed, and some aspects of costs analysis are described. The text is supported by examples, multiple choice and numerical questions with answers provided. One separate chapter with case studies is included in the book. In addition, the latest common test standards and codes of practice are introduced in a few sections with extensive references. This textbook will serve courses in geosynthetics or earth reinforcement for graduate students in Geotechnical, Transportation, Hydraulic or Environmental Engineering. It may also be used as part of the undergraduate Geotechnical Engineering course for final year undergraduate students in Civil Engineering. The structure of this text also facilitates self-study by civil engineers, manufacturers and installers who wish to become familiar with the subject matter.

Fundamentals of Soil Behavior

Titre : Fundamentals of Soil Behavior
Auteur : James Kenneth Mitchell
Éditeur :
ISBN-13 : OCLC:848198233
Libération : 1976

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James Kenneth Mitchell A été écrit sous une forme ou une autre pendant la plus grande partie de sa vie. Vous pouvez trouver autant d'inspiration de Fundamentals of Soil Behavior Aussi informatif et amusant. Cliquez sur le bouton TÉLÉCHARGER ou Lire en ligne pour obtenir gratuitement le livre de titre $ gratuitement.

Microporomechanics

Titre : Microporomechanics
Auteur : Luc Dormieux
Éditeur : John Wiley & Sons
ISBN-13 : 9780470031995
Libération : 2006-08-14

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Intended as a first introduction to the micromechanics of porous media, this book entitled “Microporomechanics” deals with the mechanics and physics of multiphase porous materials at nano and micro scales. It is composed of a logical and didactic build up from fundamental concepts to state-of-the-art theories. It features four parts: following a brief introduction to the mathematical rules for upscaling operations, the first part deals with the homogenization of transport properties of porous media within the context of asymptotic expansion techniques. The second part deals with linear microporomechanics, and introduces linear mean-field theories based on the concept of a representative elementary volume for the homogenization of poroelastic properties of porous materials. The third part is devoted to Eshelby’s problem of ellipsoidal inclusions, on which much of the micromechanics techniques are based, and illustrates its application to linear diffusion and microporoelasticity. Finally, the fourth part extends the analysis to microporo-in-elasticity, that is the nonlinear homogenization of a large range of frequently encountered porous material behaviors, namely, strength homogenization, nonsaturated microporomechanics, microporoplasticity and microporofracture and microporodamage theory.

Powders and Grains 2009

Titre : Powders and Grains 2009
Auteur : Masami Nakagawa
Éditeur : American Inst. of Physics
ISBN-13 : UCSD:31822037778230
Libération : 2009-06-26

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Powders and Grains is an international scientific conference held every 4 years that brings together engineers and physicists interested in the microcmechanics of granular media, powders and grains. The meetings are organized by AEMMG (Association pour L'Etude de la Micromecanique des Milieux Granulaires). Previous meetings were held in Clement-Ferrand, France (1989), Birmingham, England (1993), Durham, USA (1997), Sendai, Japan (2001), and in Stuttgart, Germany (2005). Powders & Grains distinguishes itself from other meetings on granular materials in two ways: (1) It brings together both engineers and physicists. (2) It emphasizes the micromechanics of granular materials. The conference program includes contributions from experts around the world related to the general topic of granular media.

Disordered Pharmaceutical Materials

Titre : Disordered Pharmaceutical Materials
Auteur : Marc Descamps
Éditeur : John Wiley & Sons
ISBN-13 : 9783527331253
Libération : 2016-08-08

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A one-stop resource for researchers, developers, and post graduate students in pharmaceutical science. This handbook and ready reference provides detailed, but not overloaded information -- presenting the topic without unnecessarily complex formalism. As such, it gives a systematic and coherent overview of disordered materials for pharmaceutical applications, covering fundamental aspects, as well as preparation and characterization techniques for the target-oriented development of drug delivery systems based on disordered crystals and amorphous solids. Special attention is paid to examine the different facets and levels of disorder in their structural and dynamic aspects as well as the effect of disorder on dissolution and stability. Chapters on processing induced disorder and on patenting issues round off the book. As a result the book helps overcoming the challenges of using these materials in the pharmaceutical industry. For pharmaceutical and medicinal chemists, materials scientists, clinical physicists, and pharmaceutical laboratories looking to make better and more potent pharmaceuticals.

Energy Geostructures

Titre : Energy Geostructures
Auteur : Lyesse Laloui
Éditeur : John Wiley & Sons
ISBN-13 : 9781848215726
Libération : 2013-08-19

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Energy geostructures are a tremendous innovation in the field of foundation engineering and are spreading rapidly throughout the world. They allow the procurement of a renewable and clean source of energy which can be used for heating and cooling buildings. This technology couples the structural role of geostructures with the energy supply, using the principle of shallow geothermal energy. This book provides a sound basis in the challenging area of energy geostructures. The objective of this book is to supply the reader with an exhaustive overview on the most up-to-date and available knowledge of these structures. It details the procedures that are currently being applied in the regions where geostructures are being implemented. The book is divided into three parts, each of which is divided into chapters, and is written by the brightest engineers and researchers in the field. After an introduction to the technology as well as to the main effects induced by temperature variation on the geostructures, Part 1 is devoted to the physical modeling of energy geostructures, including in situ investigations, centrifuge testing and small-scale experiments. The second part includes numerical simulation results of energy piles, tunnels and bridge foundations, while also considering the implementation of such structures in different climatic areas. The final part concerns practical engineering aspects, from the delivery of energy geostructures through the development of design tools for their geotechnical dimensioning. The book concludes with a real case study. Contents Part 1. Physical Modeling of Energy Piles at Different Scales 1. Soil Response under Thermomechanical Conditions Imposed by Energy Geostructures, Alice Di Donna and Lyesse Laloui. 2. Full-scale In Situ Testing of Energy Piles, Thomas Mimouni and Lyesse Laloui. 3. Observed Response of Energy Geostructures, Peter Bourne-Webb. 4. Behavior of Heat-Exchanger Piles from Physical Modeling, Anh Minh Tang, Jean-Michel Pereira, Ghazi Hassen and Neda Yavari. 5. Centrifuge Modeling of Energy Foundations, John S. McCartney. Part 2. Numerical Modeling of Energy Geostructures 6. Alternative Uses of Heat-Exchanger Geostructures, Fabrice Dupray, Thomas Mimouni and Lyesse Laloui. 7. Numerical Analysis of the Bearing Capacity of Thermoactive Piles Under Cyclic Axial Loading, Maria E. Suryatriyastuti, Hussein Mroueh , Sébastien Burlon and Julien Habert. 8. Energy Geostructures in Unsaturated Soils, John S. McCartney, Charles J.R. Coccia , Nahed Alsherif and Melissa A. Stewart. 9. Energy Geostructures in Cooling-Dominated Climates, Ghassan Anis Akrouch, Marcelo Sanchez and Jean-Louis Briaud. 10. Impact of Transient Heat Diffusion of a Thermoactive Pile on the Surrounding Soil, Maria E. Suryatriyastuti, Hussein Mroueh and Sébastien Burlon. 11. Ground-Source Bridge Deck De-icing Systems Using Energy Foundations, C. Guney Olgun and G. Allen Bowers. Part 3. Engineering Practice 12. Delivery of Energy Geostructures, Peter Bourne-Webb with contributions from Tony Amis, Jean-Baptiste Bernard, Wolf Friedemann, Nico Von Der Hude, Norbert Pralle, Veli Matti Uotinen and Bernhard Widerin. 13. Thermo-Pile: A Numerical Tool for the Design of Energy Piles, Thomas Mimouni and Lyesse Laloui. 14. A Case Study: The Dock Midfield of Zurich Airport, Daniel Pahud. About the Authors Lyesse Laloui is Chair Professor, Head of the Soil Mechanics, Geoengineering and CO2 storage Laboratory and Director of Civil Engineering at the Swiss Federal Institute of Technology (EPFL) in Lausanne, Switzerland. Alice Di Donna is a researcher at the Laboratory of Soil Mechanics at the Swiss Federal Institute of Technology (EPFL) in Lausanne, Switzerland.