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Soil Behaviour and Critical State Soil Mechanics

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ISBN-10: 0521337828

ISBN-13: 9780521337823

Edition: 1990

Authors: David Muir Wood

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Soils can rarely be described as ideally elastic or perfectly plastic and yet simple elastic and plastic models form the basis for the most traditional geotechnical engineering calculations. With the advent of cheap powerful computers the possibility of performing analyses based on more realistic models has become widely available. One of the aims of this book is to describe the basic ingredients of a family of simple elastic-plastic models of soil behavior and to demonstrate how such models can be used in numerical analyses. Such numerical analyses are often regarded as mysterious black boxes but a proper appreciation of their worth requires an understanding of the numerical models on…    
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Book details

Copyright year: 1990
Publisher: Cambridge University Press
Publication date: 4/26/1991
Binding: Paperback
Pages: 488
Size: 6.25" wide x 9.25" long x 1.25" tall
Weight: 1.430
Language: English

List of symbols
Introduction: models and soil mechanics
Use of models in engineering
Soil: volumetric variables
Effective stresses: pore pressures
Soil testing: stress and strain variables
Triaxial apparatus
Other testing apparatus
Plane strain
Pore pressure parameters
Isotropic elasticity
Soil elasticity
Anisotropic elasticity
The role of elasticity in soil mechanics
Plasticity and yielding
Yielding of metal tubes in combined tension and torsion
Yielding of clays
Yielding of sands
Yielding of metals and soils
Elastic-plastic model for soil
Elastic volumetric strains
Plastic volumetric strains and plastic hardening
Plastic shear strains
Frictional block
Plastic potentials
Normality or associated flow
General plastic stress: strain relationship
Summary: ingredients of elastic-plastic model
A particular elastic-plastic model: Cam clay
Cam clay
Cam clay predictions: conventional drained triaxial compression
Cam clay predictions: conventional undrained triaxial compression
Critical states
Introduction: critical state line
Two-dimensional representations of p':q:v information
Critical states for clays
Critical state line and qualitative soil response
Critical states for sands and other granular materials
Strength of soils
Introduction: Mohr-Coulomb failure
Critical state line and undrained shear strength
Critical state line and pore pressures at failure
Peak strengths
Peak strengths for clay
Interpretation of peak strength data
Peak strengths for sand
Status of stability and collapse calculations
Total and effective stress analyses
Critical state strength and residual strength
Plastic potentials, flow rules, and stress-dilatancy diagrams
Stress-dilatancy in plane strain
Work equations: 'original' Cam clay
Rowe's stress-dilatancy relation
Experimental findings
Strength and dilatancy
Index properties
Fall-cone test as index test
Properties of insensitive soils
Background to correlations
Liquid limit
Plastic limit
Plasticity and compressibility; liquidity and strength
Liquidity and critical states
Liquidity and normal compression
Sensitive soils
Strength and overburden pressure
Stress paths and soil tests
Display of stress paths
Axially symmetric stress paths
One-dimensional compression of soil
One-dimensional unloading of soil
Fluctuation of water table
Elements on centreline beneath circular load
Plane strain stress paths
One-dimensional compression and unloading
Elements beneath long embankment
Elements adjacent to long excavation
Element in long slope
General stress paths
Undrained strength of soil in various tests
Modes of undrained deformation
Undrained strengths: Cam clay model
Applications of elastic-plastic models
Circular load on soft clay foundation
Yielding and generation of pore pressure
Yielding and immediate settlement
Yielding and coefficient of consolidation
Yielding and long-term settlement
Finite element analyses of geotechnical problems
Inhomogeneities within a triaxial test specimen
Centrifuge model of embankment on soft clay
Experimental embankment on soft clay at Cubzac-les-Ponts
Beyond the simple models
Introduction: purpose of models
Effects of time
Inelastic elastic response
Evolution of yield loci
Concluding remarks: applicable models