Shear Strength Characteristics and Failure Mechanism of Slopes in Overconsolidated Soils of Nebraska
Shear Strength Characteristics and Failure Mechanism of Slopes in Overconsolidated Soils of Nebraska

Author: Hossein Bahmyari

Publisher:

Published: 2018

Total Pages: 136

ISBN-13:

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Geotechnical engineers deal with some challenging problems when encountering long-term slope stability in overconsolidated clays and clayey shales. One of these problems is determining a suitable method to estimate the reliable shear strength of overconsolidated clayey soils for long-term slope stability. According to Eversol (2013), one half of the counties in Nebraska have experienced slope failure in overconsolidated soils, especially in north and east Nebraska. In this research, shear strength characteristics of overconsolidated clayey soils of Nebraska is investigated in regard to long-term stability of slopes, and the failure mechanism in such soils is examined. Undisturbed samples from boring logs from two different failure locations were taken. The research involved laboratory testing to compare and investigate the shear strength parameters of overconsolidated soils in undrained and drained conditions at high and low normal effective stress levels. Some issues that are addressed include: (i) the shear strength reduction due to low effective stress in adrained condition, (ii) the swelling behavior during consolidation and shearing stages of saturated overconsolidated soils in low effective confining stress, (iii) the suitable shear strength that helps to design/repair slopes in overconsolidated soils of Nebraska. One major finding of this research is that one of the main reasons for slope instability in overconsolidated clayey soils and shales in Nebraska is shear strength reduction. This strength reduction, which usually causes a progressive failure in overconsolidated soils in Nebraska, is due to swelling and softening; (2) the presence of expansive clay minerals in overconsolidated soils induced additional swelling in some areas reduces the shear strength of soils dramatically, especially at shallow depths; and (3) the laboratory results showed that the fully softened shear strength from a consolidated drained triaxial test may present a suitable shear strength for long-term slope stability in overconsolidated soils in Nebraska.

Understanding and Reducing Landslide Disaster Risk
Understanding and Reducing Landslide Disaster Risk

Author: Binod Tiwari

Publisher: Springer Nature

Published: 2020-12-22

Total Pages: 504

ISBN-13: 3030607062

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This book is a part of ICL new book series “ICL Contribution to Landslide Disaster Risk Reduction” founded in 2019. Peer-reviewed papers submitted to the Fifth World Landslide Forum were published in six volumes of this book series. This book contains the followings: • Five keynote lectures • Recent development in physical modeling of landslides • Recent development in numerical modeling of landslides • Recent development in soil and rock testing techniques, application and analysis methods • Recent advancements in the methods of slope stability and deformation analyses • Recent development in disaster risk assessment Prof. Binod Tiwari is a Vice President of the International Consortium on Landslides (ICL). He is the Associate Vice President for research and sponsored project and Professor of civil and environmental engineering at the California State University, Fullerton, California, USA. Prof. Kyoji Sassa is the Founding President and the Secretary-General of the International Consortium on Landslides (ICL). He has been the Editor-in-Chief of International Journal Landslides since its foundation in 2004. Prof. Peter Bobrowsky is the President of the International Consortium on Landslides. He is a Senior Scientist of Geological Survey of Canada, Ottawa, Canada. Prof. Kaoru Takara is the Executive Director of the International Consortium on Landslides. He is a Professor and Dean of Graduate School of Advanced Integrated Studies (GSAIS) in Human Survivability (Shishu-Kan), Kyoto University.

Slope Stability Analysis and Stabilization
Slope Stability Analysis and Stabilization

Author: Y. M. Cheng

Publisher: CRC Press

Published: 2014-05-22

Total Pages: 441

ISBN-13: 1466582847

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Includes Recommendations for Analysis, Design Practice, Design Charts, Tables, and MoreUsing a unified approach to address a medley of engineering and construction problems, Slope Stability Analysis and Stabilization: New Methods and Insight, Second Edition provides helpful practical advice and design resources for the practicing engineer. This tex

Soil Strength and Slope Stability
Soil Strength and Slope Stability

Author: J. Michael Duncan

Publisher: John Wiley & Sons

Published: 2014-08-13

Total Pages: 336

ISBN-13: 1118917952

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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.

Slope Stability and Stabilization Methods
Slope Stability and Stabilization Methods

Author: Lee W. Abramson

Publisher: Wiley-Interscience

Published: 1996

Total Pages: 664

ISBN-13:

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This text includes an introduction to the concepts used in slope stability studies, a discussion of the geologic features that usually give slopes their personality, groundwater and seepage issues that frequently cause slope stability problems, and slope s

The Stability of Slopes
The Stability of Slopes

Author: Eddie Bromhead

Publisher: CRC Press

Published: 1992-06-18

Total Pages: 424

ISBN-13: 0203975359

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The new edition of this successful book has been thoroughly revised to take account of recent advances in our understanding of slope stability and instability.

Characterisation and Engineering Properties of Natural Soils
Characterisation and Engineering Properties of Natural Soils

Author: T. S. Tan

Publisher: CRC Press

Published: 2003

Total Pages: 836

ISBN-13: 9789058095381

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This first volume of a specialty 2-volume work contains 34 papers pertaining to the natural behaviour of diverse geomaterials found in different parts of the world. Each paper is organized along the outline: location and distribution, engineering geology, composition, state and index properties, structure, engineering properties, quality / reliability of data with reference to methods of sampling and testing, and relation to engineering problems. This extensive body of collated knowledge is integrated by three overview papers covering engineering geology, mechanical behaviour and engineering implications. Topics: Overview papers; Marine clays; Eastuarine Clays; Lacustrine clays; Stiff clays; Sands and other cohesionless soils; Residual and other tropical Soils; Weak rock.

Correlations of Soil and Rock Properties in Geotechnical Engineering
Correlations of Soil and Rock Properties in Geotechnical Engineering

Author: Jay Ameratunga

Publisher: Springer

Published: 2015-12-11

Total Pages: 236

ISBN-13: 8132226291

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This book presents a one-stop reference to the empirical correlations used extensively in geotechnical engineering. Empirical correlations play a key role in geotechnical engineering designs and analysis. Laboratory and in situ testing of soils can add significant cost to a civil engineering project. By using appropriate empirical correlations, it is possible to derive many design parameters, thus limiting our reliance on these soil tests. The authors have decades of experience in geotechnical engineering, as professional engineers or researchers. The objective of this book is to present a critical evaluation of a wide range of empirical correlations reported in the literature, along with typical values of soil parameters, in the light of their experience and knowledge. This book will be a one-stop-shop for the practising professionals, geotechnical researchers and academics looking for specific correlations for estimating certain geotechnical parameters. The empirical correlations in the forms of equations and charts and typical values are collated from extensive literature review, and from the authors' database.

A Short Course in Soil and Rock Slope Engineering
A Short Course in Soil and Rock Slope Engineering

Author: Noel Simons

Publisher: Thomas Telford Limited

Published: 2001-09-28

Total Pages: 454

ISBN-13:

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This work comprehensively treats soil & rock slope engineering in one volume. It focuses on getting the fundamentals right, explaining simple methods of stability analysis, and applying them to a wide range of practical applications.