Soil behaviour and critical state soil mechanics

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Title:

Personal Author:

Muir Wood, David, 1949-

Publication Information:

London : Cambridge University Press 1990

Physical Description:

xxiii, 462 p. : ill. ; 24 cm.

ISBN:

9780521337823

Subject Term:

Soil mechanics

Available:*

Library	Item Barcode	Call Number	Material Type	Item Category 1	Status
Searching... PSZ JB	30000010214481	TA710 M844 1990	Open Access Book	Book	Searching... Unknown

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 behaviour 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 which they are based. Though the models on which this book concentrates are simple, understanding of these will indicate the ways in which more sophisticated models will perform.

Reviews 1

Choice Review

Behavior of soil is presented in the light of the soil critical state, which combines the differences in volume changes and effective stresses to explain a soil's response. All of the authors, including Wood, have been associated with Cambridge University, where the concept of critical state originated and where most of the work has been developed. The sequence in which the subject matter is presented dictates that a reader have a fairly good understanding of the basic concepts of geotechnical engineering. A nice characteristic of this book is that each chapter ends with a brief discussion of its salient features as well as some introductory remarks about the next chapter. A number of exercises are provided at the end of each chapter but there are no example problems. The quality of index, references, and illustrations are all very good. A good book for graduate students and faculty interested in learning about the applicability and limitations of critical state soil mechanics in research and in engineering practice.

Preface	p. xi
Acknowledgements	p. xv
List of symbols	p. xvi
1 Introduction: models and soil mechanics	p. 1
1.1 Use of models in engineering	p. 1
1.2 Soil: volumetric variables	p. 5
1.3 Effective stresses: pore pressures	p. 12
1.4 Soil testing: stress and strain variables	p. 16
1.4.1 Triaxial apparatus	p. 16
1.4.2 Other testing apparatus	p. 28
1.5 Plane strain	p. 31
1.6 Pore pressure parameters	p. 33
1.7 Conclusion	p. 35
Exercises	p. 35
2 Elasticity	p. 37
2.1 Isotropic elasticity	p. 37
2.2 Soil elasticity	p. 40
2.3 Anisotropic elasticity	p. 46
2.4 The role of elasticity in soil mechanics	p. 52
Exercises	p. 53
3 Plasticity and yielding	p. 55
3.1 Introduction	p. 55
3.2 Yielding of metal tubes in combined tension and torsion	p. 57
3.3 Yielding of clays	p. 65
3.4 Yielding of sands	p. 76
3.5 Yielding of metals and soils	p. 81
Exercises	p. 82
4 Elastic-plastic model for soil	p. 84
4.1 Introduction	p. 84
4.2 Elastic volumetric strains	p. 85
4.3 Plastic volumetric strains and plastic hardening	p. 89
4.4 Plastic shear strains	p. 98
4.4.1 Frictional block	p. 99
4.4.2 Plastic potentials	p. 102
4.4.3 Normality or associated flow	p. 103
4.5 General plastic stress: strain relationship	p. 106
4.6 Summary: ingredients of elastic-plastic model	p. 107
Exercises	p. 109
5 A particular elastic-plastic model: Cam clay	p. 112
5.1 Introduction	p. 112
5.2 Cam clay	p. 113
5.3 Cam clay predictions: conventional drained triaxial compression	p. 118
5.4 Cam clay predictions: conventional undrained triaxial compression	p. 126
5.5 Conclusion	p. 136
Exercises	p. 137
6 Critical states	p. 139
6.1 Introduction: critical state line	p. 139
6.2 Two-dimensional representations of p':q:v information	p. 144
6.3 Critical states for clays	p. 149
6.4 Critical state line and qualitative soil response	p. 158
6.5 Critical states for sands and other granular materials	p. 162
6.6 Conclusion	p. 173
Exercises	p. 173
7 Strength of soils	p. 175
7.1 Introduction: Mohr-Coulomb failure	p. 175
7.2 Critical state line and undrained shear strength	p. 179
7.3 Critical state line and pore pressures at failure	p. 186
7.4 Peak strengths	p. 188
7.4.1 Peak strengths for clay	p. 196
7.4.2 Interpretation of peak strength data	p. 205
7.4.3 Peak strengths for sand	p. 207
7.5 Status of stability and collapse calculations	p. 213
7.6 Total and effective stress analyses	p. 215
7.7 Critical state strength and residual strength	p. 219
7.8 Conclusion	p. 224
Exercises	p. 224
8 Stress-dilatancy	p. 226
8.1 Introduction	p. 226
8.2 Plastic potentials, flow rules, and stress-dilatancy diagrams	p. 226
8.3 Stress-dilatancy in plane strain	p. 229
8.4 Work equations: 'original' Cam clay	p. 236
8.5 Rowe's stress-dilatancy relation	p. 239
8.6 Experimental findings	p. 244
8.7 Strength and dilatancy	p. 250
8.8 Conclusion	p. 251
Exercises	p. 252
9 Index properties	p. 256
9.1 Introduction	p. 256
9.2 Fall-cone test as index test	p. 257
9.3 Properties of insensitive soils	p. 262
9.4 Background to correlations	p. 277
9.4.1 Liquid limit	p. 277
9.4.2 Plastic limit	p. 280
9.4.3 Plasticity and compressibility; liquidity and strength	p. 282
9.4.4 Liquidity and critical states	p. 285
9.4.5 Liquidity and normal compression	p. 290
9.5 Sensitive soils	p. 296
9.6 Strength and overburden pressure	p. 301
9.7 Conclusion	p. 308
Exercises	p. 308
10 Stress paths and soil tests	p. 310
10.1 Introduction	p. 310
10.2 Display of stress paths	p. 312
10.3 Axially symmetric stress paths	p. 314
10.3.1 One-dimensional compression of soil	p. 314
10.3.2 One-dimensional unloading of soil	p. 320
10.3.3 Fluctuation of water table	p. 327
10.3.4 Elements on centreline beneath circular load	p. 328
10.4 Plane strain stress paths	p. 330
10.4.1 One-dimensional compression and unloading	p. 330
10.4.2 Elements beneath long embankment	p. 331
10.4.3 Elements adjacent to long excavation	p. 333
10.4.4 Element in long slope	p. 335
10.5 General stress paths	p. 336
10.6 Undrained strength of soil in various tests	p. 337
10.6.1 Modes of undrained deformation	p. 337
10.6.2 Undrained strengths: Cam clay model	p. 342
10.7 Conclusion	p. 351
Exercises	p. 351
11 Applications of elastic-plastic models	p. 354
11.1 Introduction	p. 354
11.2 Circular load on soft clay foundation	p. 355
11.2.1 Yielding and generation of pore pressure	p. 355
11.2.2 Yielding and immediate settlement	p. 365
11.2.3 Yielding and coefficient of consolidation	p. 369
11.2.4 Yielding and long-term settlement	p. 372
11.3 Finite element analyses of geotechnical problems	p. 376
11.3.1 Inhomogeneities within a triaxial test specimen	p. 377
11.3.2 Centrifuge model of embankment on soft clay	p. 382
11.3.3 Experimental embankment on soft clay at Cubzac-les-Ponts	p. 393
11.4 Conclusion	p. 408
Exercises	p. 409
12 Beyond the simple models	p. 414
12.1 Introduction: purpose of models	p. 414
12.2 Effects of time	p. 414
12.3 Inelastic elastic response	p. 422
12.4 Evolution of yield loci	p. 434
12.5 Concluding remarks: applicable models	p. 444
References	p. 448
Index	p. 459

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