Soil Strength and Slope Stability,
Autor: Duncan, J. Michael, Wright,Stephen G. ,Brandon,Thomas L.
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.
Table of Contents
Foreword
Preface
CHAPTER 1 INTRODUCTION
Summary
CHAPTER 2 EXAMPLES AND CAUSES OF SLOPE FAILURES
2.1 Introduction
2.2 Examples of Slope Failure
2.3 The Olmsted Landslide
2.4 Panama Canal Landslides
2.5 The Rio Mantaro Landslide
2.6 Kettleman Hills Landfill Failure
2.7 Causes of Slope Failure
2.8 Summary
CHAPTER 3 SOIL MECHANICS PRINCIPLES
3.1 Introduction
3.2 Total and Effective Stresses
3.3 Drained and Undrained Shear Strengths
3.4 Basic Requirements for Slope Stability Analyses
CHAPTER 4 STABILITY CONDITIONS FOR ANALYSIS
4.1 Introduction
4.2 End-of-Construction Stability
4.3 Long-Term Stability
4.4 Rapid (Sudden) Drawdown
4.5 Earthquake
4.6 Partial Consolidation and Staged Construction
4.7 Other Loading Conditions
4.8 Analysis Cases for Earth and Rockfill Dams
CHAPTER 5 SHEAR STRENGTH
5.1 Introduction
5.2 Behavior of Granular Materials—Sand, Gravel, and Rockfill
5.3 Silts
5.4 Clays
5.5 Municipal Solid Waste
CHAPTER 6 MECHANICS OF LIMIT EQUILIBRIUM PROCEDURES
6.1 Definition of the Factor of Safety
6.2 Equilibrium Conditions
6.3 Single Free-Body Procedures
6.4 Procedures of Slices: General
6.5 Procedures of Slices: Circular Slip Surfaces
6.6 Procedures of Slices: Noncircular Slip Surfaces
6.7 Procedures of Slices: Assumptions, Equilibrium Equations, and Unknowns
6.8 Procedures of Slices: Representation of Interslice Forces (Side Forces)
6.9 Computations with Anisotropic Shear Strengths
6.10 Computations with Curved Strength Envelopes
6.11 Finite Element Analysis of Slopes
6.12 Alternative Definitions of the Factor of Safety
6.13 Pore Water Pressure Representation
CHAPTER 7 METHODS OF ANALYZING SLOPE STABILITY
7.1 Simple Methods of Analysis
7.2 Slope Stability Charts
7.3 Spreadsheet Software
7.4 Finite Element Analyses of Slope Stability
7.5 Computer Programs for Limit Equilibrium Analyses
7.6 Verification of Results of Analyses
7.7 Examples for Verification of Stability Computations
CHAPTER 8 REINFORCED SLOPES AND EMBANKMENTS
8.1 Limit Equilibrium Analyses with Reinforcing Forces
8.2 Factors of Safety for Reinforcing Forces and Soil Strengths
8.3 Types of Reinforcement
8.4 Reinforcement Forces
8.5 Allowable Reinforcement Forces and Factors of Safety
8.6 Orientation of Reinforcement Forces
8.7 Reinforced Slopes on Firm Foundations
8.8 Embankments on Weak Foundations
CHAPTER 9 ANALYSES FOR RAPID DRAWDOWN
9.1 Drawdown during and at the End of Construction
9.2 Drawdown for Long-Term Conditions
9.3 Partial Drainage
9.4 Shear-Induced Pore Pressure Changes
CHAPTER 10 SEISMIC SLOPE STABILITY
10.1 Analysis Procedures
10.2 Pseudostatic Screening Analyses
10.3 Determining Peak Accelerations
10.4 Shear Strength for Pseudostatic Analyses
10.5 Postearthquake Stability Analyses
CHAPTER 11 ANALYSES OF EMBANKMENTS WITH PARTIAL CONSOLIDATION OF WEAK FOUNDATIONS
11.1 Consolidation During Construction
11.2 Analyses of Stability with Partial Consolidation
11.3 Observed Behavior of an Embankment Constructed in Stages
11.4 Discussion
CHAPTER 12 ANALYSES TO BACK-CALCULATE STRENGTHS
12.1 Back-Calculating Average Shear Strength
12.2 Back-Calculating Shear Strength Parameters Based on Slip Surface Geometry
12.3 Examples of Back-Analyses of Failed Slopes
12.4 Practical Problems and Limitation of Back-Analyses
12.5 Other Uncertainties
CHAPTER 13 FACTORS OF SAFETY AND RELIABILITY
13.1 Definitions of Factor of Safety
13.2 Factor of Safety Criteria
13.3 Reliability and Probability of Failure
13.4 Standard Deviations and Coefficients of Variation
13.5 Estimating Reliability and Probability of Failure
CHAPTER 14 IMPORTANT DETAILS OF STABILITY ANALYSES
14.1 Location of Critical Slip Surfaces
14.2 Examination of Noncritical Slip Surfaces
14.3 Tension in the Active Zone
14.4 Inappropriate Forces in the Passive Zone
14.5 Other Details
14.6 Verification of Calculations
14.7 Three-Dimensional Effects
CHAPTER 15 PRESENTING RESULTS OF STABILITY EVALUATIONS
15.1 Site Characterization and Representation
15.2 Soil Property Evaluation
15.3 Pore Water Pressures
15.4 Special Features
15.5 Calculation Procedure
15.6 Analysis Summary Figure
15.7 Parametric Studies
15.8 Detailed Input Data
15.9 Table Of Contents
CHAPTER 16 SLOPE STABILIZATION AND REPAIR
16.1 Use of Back-Analysis
16.2 Factors Governing Selection of Method of Stabilization
16.3 Drainage
16.4 Excavations and Buttress Fills
16.5 Retaining Structures
16.6 Reinforcing Piles and Drilled Shafts
16.7 Injection Methods
16.8 Vegetation
16.9 Thermal TreatmenT
16.10 Bridging
16.11 Removal and Replacement of the Sliding Mass
APPENDIX A SLOPE STABILITY CHARTS
APPENDIX B CURVED SHEAR STRENGTH ENVELOPES FORFULLYSOFTENED SHEAR STRENGTHS AND THEIR IMPACT ON SLOPE STABILITY ANALYSES
REFERENCES
INDEX
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