Gudehus Physical Soil Mechanics

1. Auflage 2011
ISBN: 978-3-540-36354-5
Verlag: Springer Berlin Heidelberg
Format: PDF
Kopierschutz: 1 - PDF Watermark

E-Book, Englisch, 840 Seiten

Reihe: Advances in Geophysical and Environmental Mechanics and Mathematics

Soil is matter in its own right. Its nature can be captured by means of monotonous, cyclic and strange attractors. Thus material properties are defined by the asymptotic response of sand- and clay-like samples to imposed deformations and stresses. This serves to validate and calibrate elastoplastic and hypoplastic relations with comparative plots. Extensions capture thermal and seismic activations, limitations occur due to localizations and skeleton decay.Attractors in the large characterize boundary value problems from model tests via geotechnical operations up to tectonic evolutions. Validations of hypoplastic calculations are shown with many examples, possible further applications are indicated in detail. This approach is energetically justified and limited by critical points where the otherwise legitimate continuity gets lost by localization and decay. You will be fascinated by the fourth element although or just as it is so manifold.

Gerd Gudehus studied civil engineering in Berlin, where he also completed his doctoral thesis in soil mechanics. In 1973, he became full professor and chairman of the Department of Soil Mechanics and Foundation Engineering at the Institute of Soil and Rock Mechanics, Karlsruhe University. He is head of the Soil Mechanics Section of the German National Geotechnical Society and is engaged in the conservation and restoration of historical retaining walls and in the stabilization of the foundations of historical buildings situated on soft ground.

Autoren/Hrsg.

Gudehus, Gerd

Inhaltsverzeichnis

1;Advances in Geophysical and Environmental Mechanics and Mathematics;1
2;PROLOGUE;4
3;Contents;10
4;1 INTRODUCTION;13
4.1;1.1 Potential of particulate and solid continuum models;14
4.2;1.2 Objectivity of continuum soil models;19
5;2 SIMPLE PSAMMOIDS;27
5.1;2.1 A prelude on solids;29
5.2;2.2 An introduction of simple psammoids;38
5.3;2.3 A shortcut of CSSM;49
5.4;2.4 A shortcut of hypoplasticity;56
5.5;2.5 Validations near state limits with cylindrical symmetry;62
5.6;2.6 Validation off state limits with cylindrical symmetry;68
5.7;2.7 Cuboidal deformations near state limits;76
5.8;2.8 Cuboidal deformations off state limits;87
5.9;2.9 Simple shearing at state limits;94
5.10;2.10 Shearing off state limits;105
5.11;2.11 General and outlook;112
6;3 SIMPLE PELOIDS;123
6.1;3.1 A second prelude on solids;124
6.2;3.2 An introduction of simple peloids;134
6.3;3.3 Cam clay plus viscosity with cylindrical symmetry;149
6.4;3.4 Visco-hypoplasticity with cylindrical symmetry;156
6.5;3.5 Validation near and at state limits with cylindrical symmetry;163
6.6;3.6 Validation off state limits with cylindrical symmetry;175
6.7;3.7 Cuboidal deformations;182
6.8;3.8 Simple shearing;186
6.9;3.9 General and outlook;197
7;4 PSAMMOIDS WITH REVERSALS;205
7.1;4.1 A third prelude on solids;206
7.2;4.2 Observed response of sand with reversals;218
7.3;4.3 Attractors with force-roughness;230
7.4;4.4 Elastoplasticity with back stress;239
7.5;4.5 Hypoplasticity with intergranular strain;247
7.6;4.6 Seismically activated viscous effects;255
7.7;4.7 General and outlook;264
8;5 PELOIDS WITH REVERSALS;270
8.1;5.1 A fourth prelude on solids;271
8.2;5.2 Observed response of peloids with reversals;278
8.3;5.3 Visco-elastoplasticity with back stress;286
8.4;5.4 Visco-hypoplasticity with intergranular strain;292
8.5;5.5 General and outlook;297
9;6 PORE FLUID;304
9.1;6.1 Interfaces of water with gas and solids;305
9.2;6.2 Pore fluid of psammoids;308
9.3;6.3 Pore fluid of peloids;315
10;7 BRIDGING GAPS;324
10.1;7.1 Saturated peloids with net pressures;324
10.2;7.2 Unsaturated soils;333
10.3;7.3 Cemented and transient particles;343
11;8 LOCALIZATION;354
11.1;8.1 A fifth prelude on solids;355
11.2;8.2 Shear localization in psammoids;365
11.3;8.3 Shear localization in peloids;379
11.4;8.4 Cracking and channelling;390
12;9 FABRIC;396
12.1;9.1 Fabrics by state;396
12.2;9.2 Fabrics by composition;402
13;10 BOUNDARY CONDITIONS;408
13.1;10.1 Soils at water and air;409
13.2;10.2 Boundaries in the ground;417
13.3;10.3 Soils at solids;426
13.4;10.4 Placement and removal;434
14;11 ONE-DIMENSIONAL EVOLUTIONS;447
14.1;11.1 A prelude on the diffusion of pore water;448
14.2;11.2 Standing psammoid columns;454
14.3;11.3 Standing peloid and composite columns;460
14.4;11.4 Standing soil columns with wave propagation;467
14.5;11.5 Psammoid columns in slopes;473
14.6;11.6 Peloid columns in slopes;480
14.7;11.7 Radial symmetry;488
15;12 PLANE-PARALLEL EVOLUTIONS WITHOUT SSI;494
15.1;12.1 Psammoid heaps upon a solid base;495
15.2;12.2 Peloid and composite heaps on a solid base;504
15.3;12.3 Heaps upon yielding ground;511
15.4;12.4 Excavations;522
15.5;12.5 In-plane and anti-plane shaking;531
15.6;12.6 Normal faulting;540
16;13 PLANE-PARALLEL EVOLUTIONS WITH SSI;547
16.1;13.1 Psammoids at rigid guided walls;548
16.2;13.2 Peloids and composites at rigid guided walls;562
16.3;13.3 Guided rigid strips upon yielding ground;571
16.4;13.4 Rigid structures at the ground;584
16.5;13.5 Deformable structures at the ground;598
16.6;13.6 Strutted and back-tied retaining structures;608
16.7;13.7 Cavities and underground structures;621
16.8;13.8 SSI with reversals;634
17;14 AXI-SYMMETRIC EVOLUTIONS;644
17.1;14.1 Triaxial tests;645
17.2;14.2 Fills, excavations and ring structures;656
17.3;14.3 Penetration;667
17.4;14.4 Piles;682
17.5;14.5 Silos;694
17.6;14.6 Torsion;706
18;15 LESS SYMMETRIC EVOLUTIONS;719
18.1;15.1 Two symmetry planes without SSI;719
18.2;15.2 Two symmetry planes with SSI;731
18.3;15.3 One symmetry plane and simple SSI;747
18.4;15.4 One symmetry plane and complex SSI;760
18.5;15.5 Tumbling and driving;779
19;16 CRITICAL PHENOMENA;794
19.1;16.1 Critical phenomena off soil mechanics;795
19.2;16.2 Pattern formation with soils;798
19.3;16.3 Deterministic chaos with soils;802
20;EPILOGUE;808
21;Symbols and Acronyms;811
22;References;814
23;Index;839