Download or read book Influence of smear and compaction zones on the performance of stone columns in lacustrine clay written by Jean Nicolas François-Xavier Gautray and published by vdf Hochschulverlag AG. This book was released on 2019-02-20 with total page 411 pages. Available in PDF, EPUB and Kindle. Book excerpt: Construction on soft soils is always accompanied by the risk of significant, time-dependent settlement and bearing capacity failure. As technical knowledge has advanced, optimised ground improvement has offered significant economic advantages in reducing net settlement and resisting failure by installation of more flexible and cost-effective stone columns or sand compaction piles in the ground, rather than more rigid inclusions such as steel or concrete piles. The stiffness and strength of the subsoil around the columns is greater, and the consolidation time is reduced through shorter (radial) drainage paths.
Download or read book Experimental investigations for the modelling of anhydritic swelling claystones written by Tara Wanninger (-Huber) and published by vdf Hochschulverlag AG. This book was released on 2020-07-01 with total page 344 pages. Available in PDF, EPUB and Kindle. Book excerpt: Experimental investigations for the modelling of anhydritic swelling claystones
Download or read book On the variability of squeezing behaviour in tunnelling written by Florence Mezger and published by vdf Hochschulverlag AG. This book was released on 2020-07-01 with total page 358 pages. Available in PDF, EPUB and Kindle. Book excerpt: On the variability of squeezing behaviour in tunnelling
Download or read book Influence of Particle Gradation and Shape on the Performance of Stone Columns in Soft Clay written by Firman Siahaan and published by . This book was released on 2018 with total page 16 pages. Available in PDF, EPUB and Kindle. Book excerpt: A stone column typically consists of particles whose influence has largely been overlooked in design practice in terms of stress transfer, pattern of deformation, and intrusion of fines (clogging). This article presents an experimental study on the load-deformation behavior of a model stone column installed in soft clay with a particular emphasis on the influence of particle gradation and shape under undrained loading. The results show that particle gradation and shape have a significant influence on the load-deformation behavior and the extent of fines intrusion into the stone columns. Relatively well-graded particle sizes favor the development of higher peak shear stresses accompanied by lateral bulging, whereas more uniform grading results in the development of distinct shear planes and smaller peak shear stresses. Deformed columns were also examined using computed tomography, and the porosity profiles at the end of the test were determined using micrographs. Maximum porosity typically occurred in the zone of extreme lateral deformation, with the results suggesting that the extent of fines intrusion was influenced by particle morphology.
Download or read book Performance of Stone Columns in Cohesive Soil written by Mahmoud Adel Mahmoud Khalifa and published by . This book was released on 2021 with total page 0 pages. Available in PDF, EPUB and Kindle. Book excerpt: Stone columns are widely used and generally considered to be one of the most cost-effective and environmental-friendly soil improvement technique for highways and embankments. They are also used as drainage to reduce the consolidation period, which accordingly increases the bearing capacity, reduces settlement, and reduces the liquefaction potential. Current design theories used to estimate the bearing capacity of a group of stone columns are based on the unit cell or homogenized material concepts, which neglect the effect of the column interactions and installation technique. This thesis therefore presents an experimental investigation, together with numerical modelling, to examine the performance of a single stone column and group of stone columns subjected to vertical loading. An analytical model is developed to capture the effect of an arrangement of stone columns and the mode of failure within a column and the surrounding soft clay material. A single stone column and a group of stone columns were investigated in a large-scale experimental set-up. The testing program was divided into four steps: (a) filling the testing tank with the clay, (b) installing the stone columns in the clay bed, (c) extracting samples of the reinforced soil (a block of stone columns surrounded by the soft clay loading), and (d) testing the samples in a triaxial apparatus. The results showed that the mode of failure of the reinforced soil depends on the column spacing and the strength of the column materials and the surrounding soil. Numerically, a 3-D finite element model was developed to examine the influence of the governing parameters on the bearing capacity of the group. The model was validated against experimental results from this study and results available in the literature. The numerical model was used to simulate the actual driving process during installation of the columns. The model was then used to predict the actual failure plane under a rigid footing reinforced by stone columns for a given geometry/soil condition. An analytical model was developed utilizing the actual failure plane deduced from the numerical model to develop a theory to predict the bearing capacity of the reinforced soil. The theory developed was validated against the results obtained from the numerical model and results reported in the literature.
Download or read book Excavations and Foundations in Soft Soils written by Hans-Georg Kempfert and published by Springer Science & Business Media. This book was released on 2006-07-01 with total page 592 pages. Available in PDF, EPUB and Kindle. Book excerpt: The book reviews recent developments and research results on excavations and foundations found in and on soft soil deposits. It gives an overview of the material properties of soft soils and offers new foundation improvement techniques in road and railways. It also examines different types of foundations and stabilization methods. The book will serve both practicing and research engineers in the field of geotechnical engineering.
Download or read book Structurally Complex Reservoirs written by S. J. Jolley and published by Geological Society of London. This book was released on 2007 with total page 508 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Basics of Foundation Design written by Bengt Fellenius and published by Lulu.com. This book was released on 2017-03-17 with total page 488 pages. Available in PDF, EPUB and Kindle. Book excerpt: The "Red Book" presents a background to conventional foundation analysis and design. The text is not intended to replace the much more comprehensive 'standard' textbooks, but rather to support and augment these in a few important areas, supplying methods applicable to practical cases handled daily by practising engineers and providing the basic soil mechanics background to those methods. It concentrates on the static design for stationary foundation conditions. Although the topic is far from exhaustively treated, it does intend to present most of the basic material needed for a practising engineer involved in routine geotechnical design, as well as provide the tools for an engineering student to approach and solve common geotechnical design problems.
Download or read book Design Construction and Evaluation of Clay Liners for Waste Management Facilities written by L. J. Goldman and published by . This book was released on 1988 with total page 560 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Design and Construction of Bridge Approaches written by Harvey E. Wahls and published by Transportation Research Board. This book was released on 1990 with total page 56 pages. Available in PDF, EPUB and Kindle. Book excerpt: Includes case histories of the Dumbarton Bridge (San Francisco Bay, Calif.), the Rainier Avenue Embankment (Seattle, Wash.) and the Gallows Road Grade Separation (Fairfax, Va.)
Download or read book Ground Improvement Techniques written by T. G. Sitharam and published by Springer. This book was released on 2022-04-08 with total page 396 pages. Available in PDF, EPUB and Kindle. Book excerpt: This volume presents select papers presented at the 7th International Conference on Recent Advances in Geotechnical Earthquake Engineering and Soil Dynamics. The papers discuss advances in the fields of soil dynamics and geotechnical earthquake engineering. Some of the themes include slope stability, shallow and deep foundations, geosynthetics, ground improvement techniques, etc. A strong emphasis is placed on connecting academic research and field practice, with many examples, case studies, best practices, and discussions on performance based design. This volume will be of interest to researchers and practicing engineers alike.
Download or read book Geotechnical Engineering of Dams written by Robin Fell and published by CRC Press. This book was released on 2014-11-21 with total page 1374 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book provides a comprehensive text on the geotechnical and geological aspects of the investigations for and the design and construction of new dams and the review and assessment of existing dams. The book provides dam engineers and geologists with a practical approach, and gives university students an insight into the subject of dam engineering. All phases of investigation, design and construction are covered, through to the preliminary and detailed design phases and ultimately the construction phase. This revised and expanded 2nd edition includes a lengthy new chapter on the assessment of the likelihood of failure of dams by internal erosion and piping.
Download or read book Limnogeology Progress Challenges and Opportunities written by Michael R. Rosen and published by Springer Nature. This book was released on 2021-04-24 with total page 592 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book honors the career of Professor Elizabeth Gierlowski-Kordesch who was a pioneer and leader in the field of limnogeology since the 1980s. Her work was instrumental in guiding students and professionals in the field until her untimely death in 2016. This collection of chapters was written by her colleagues and students and recognize the important role that Professor Gierlowski-Kordesch had in advancing the field of limnogeology. The chapters show the breadth of her reach as these have been contributed from virtually every continent. This book will be a primary reference for scientists, professionals and graduate students who are interested in the latest advances in limnogeologic processes and basin descriptions in North and South America, Europe, Africa, and China. *Free supplementary material available online for chapters 3,11,12 and 13. Access by searching for the book on link.springer.com
Download or read book Ground Improvement written by Professor Jian Chu and published by Elsevier. This book was released on 2005-11-07 with total page 1137 pages. Available in PDF, EPUB and Kindle. Book excerpt: - The first book of its kind, providing over thirty real-life case studies of ground improvement projects selected by the worlds top experts in ground improvement from around the globe. - Volume 3 of the highly regarded Elsevier Geo-engineering book series coordinated by the Series Editor: Professor John A Hudson FREng. - An extremely reader friendly chapter format. - Discusses wider economical and environmental issues facing scientists in the ground improvement.Ground improvement has been both a science and art, with significant developments observed through ancient history. From the use of straw as blended infill with soils for additional strength during the ancient Roman civilizations, and the use of elephants for compaction of earth dams during the early Asian civilizations, the concepts of reinforced earth with geosynthetics, use of electrokinetics and thermal modifications of soils have come a long way. The use of large and stiff stone columns and subsequent sand drains in the past has now been replaced by quicker to install and more effective prefabricated vertical drains, which have also eliminated the need for more expensive soil improvement methods.The early selection and application of the most appropriate ground improvement techniques can improve considerably not only the design and performance of foundations and earth structures, including embankments, cut slopes, roads, railways and tailings dams, but also result in their cost-effectiveness. Ground improvement works have become increasingly challenging when more and more problematic soils and marginal land have to be utilized for infrastructure development.This edited compilation contains a collection of Chapters from invited experts in various areas of ground improvement, who have illustrated the basic concepts and the applications of different ground improvement techniques using real projects that they have been involved in. The case histories from many countries ranging from Asia, America, Australia and Europe are addressed.
Download or read book Karst Management written by Philip E. van Beynen and published by Springer Science & Business Media. This book was released on 2011-06-21 with total page 490 pages. Available in PDF, EPUB and Kindle. Book excerpt: Focusing specifically on the management of karst environments, this volume draws together the world’s leading karst experts to provide a vital source for the study and management of this unique physical setting. Although karst landscapes cover 12% of the Earth’s terrain and provide 25% of the world’s drinking water, the resource management of karst environments has only previously received indirect attention. Through a comprehensive approach, Karst Management focuses on engineering issues associated with surface karst such as quarries, dams, and agriculture, subsurface topics such as the management of groundwater, show caves, cave biota, and geo-archaeology projects. Chapters that focus on karst as an integrated system look at IUCN World Heritage sites, national parks, policy and regulation, measuring systematic disturbance, information management, and public environmental education. The text incorporates the most up-to-date research from leading karst scientists. This volume provides important perspectives for university students, educators, geoengineers, resource managers, and planners who are interested in or work with this unique physical landscape.
Download or read book An Introduction to Reservoir Simulation Using MATLAB GNU Octave written by Knut-Andreas Lie and published by Cambridge University Press. This book was released on 2019-08-08 with total page 677 pages. Available in PDF, EPUB and Kindle. Book excerpt: Presents numerical methods for reservoir simulation, with efficient implementation and examples using widely-used online open-source code, for researchers, professionals and advanced students. This title is also available as Open Access on Cambridge Core.
Download or read book Soil Strength and Slope Stability written by J. Michael Duncan and published by John Wiley & Sons. This book was released on 2014-09-22 with total page 336 pages. Available in PDF, EPUB and Kindle. Book excerpt: The definitive guide to the critical issue of slope stability and safety Soil Strength and Slope Stability, Second Edition presents the latest thinking and techniques in the assessment of natural and man-made slopes, and the factors that cause them to survive or crumble. Using clear, concise language and practical examples, the book explains the practical aspects of geotechnical engineering as applied to slopes and embankments. The new second edition includes a thorough discussion on the use of analysis software, providing the background to understand what the software is doing, along with several methods of manual analysis that allow readers to verify software results. The book also includes a new case study about Hurricane Katrina failures at 17th Street and London Avenue Canal, plus additional case studies that frame the principles and techniques described. Slope stability is a critical element of geotechnical engineering, involved in virtually every civil engineering project, especially highway development. Soil Strength and Slope Stability fills the gap in industry literature by providing practical information on the subject without including extraneous theory that may distract from the application. This balanced approach provides clear guidance for professionals in the field, while remaining comprehensive enough for use as a graduate-level text. Topics include: Mechanics of soil and limit equilibrium procedures Analyzing slope stability, rapid drawdown, and partial consolidation Safety, reliability, and stability analyses Reinforced slopes, stabilization, and repair The book also describes examples and causes of slope failure and stability conditions for analysis, and includes an appendix of slope stability charts. Given how vital slope stability is to public safety, a comprehensive resource for analysis and practical action is a valuable tool. Soil Strength and Slope Stability is the definitive guide to the subject, proving useful both in the classroom and in the field.
