Principles and Practice of Ground Improvement E-Book

Jie Han

• Herausgeber: John Wiley & Sons
• Kategorie: Wissenschaft und neue Technologien
• Sprache: Englisch

Seitenzahl: 1013

Veröffentlichungsjahr: 2015

Beschreibung

Gain a stronger foundation with optimal ground improvement

Before you break ground on a new structure, you need to analyze the structure of the ground. Expert analysis and optimization of the geo-materials on your site can mean the difference between a lasting structure and a school in a sinkhole. Sometimes problematic geology is expected because of the location, but other times it's only unearthed once construction has begun. You need to be able to quickly adapt your project plan to include an improvement to unfavorable ground before the project can safely continue.

Principles and Practice of Ground Improvement is the only comprehensive, up-to-date compendium of solutions to this critical aspect of civil engineering. Dr. Jie Han, registered Professional Engineer and preeminent voice in geotechnical engineering, is the ultimate guide to the methods and best practices of ground improvement. Han walks you through various ground improvement solutions and provides theoretical and practical advice for determining which technique fits each situation.

• Follow examples to find solutions to complex problems
• Complete homework problems to tackle issues that present themselves in the field
• Study design procedures for each technique to simplify field implementation
• Brush up on modern ground improvement technologies to keep abreast of all available options

Principles and Practice of Ground Improvement can be used as a textbook, and includes Powerpoint slides for instructors. It's also a handy field reference for contractors and installers who actually implement plans. There are many ground improvement solutions out there, but there is no single right answer to every situation. Principles and Practice of Ground Improvement will give you the information you need to analyze the problem, then design and implement the best possible solution.

Leseprobe

Table of Contents

Title Page

Copyright

Preface

Chapter 1: Introduction

1.1 Introduction

1.2 Problematic Geomaterials and Conditions

1.3 Geotechnical Problems and Failures

1.4 Ground Improvement Methods and Classification

1.5 Selection of Ground Improvement Method

1.6 Design Considerations

1.7 Construction

1.8 Quality Control and Assurance

1.9 Recent Advances and Trends for Future Developments

1.10 Organization of Book

Problems

References

Chapter 2: Geotechnical Materials, Testing, and Design

2.1 Introduction

2.2 Geomaterials and Properties

2.3 Geosynthetics and Properties

2.4 In situ Testing

2.5 Shallow Foundation Design

2.6 Slope Stability Analysis

2.7 Earth Retaining Wall Analysis

2.8 Liquefaction Analysis

Problems

References

Chapter 3: Shallow and Deep Compaction

3.1 Introduction

3.2 Densification Principles

3.3 Conventional Compaction

3.4 Intelligent Compaction

3.5 Deep Dynamic Compaction

3.6 Rapid Impact Compaction

3.7 Vibro-compaction

Problems

References

Chapter 4: Overexcavation and Replacement

4.1 Introduction

4.2 Principles

4.3 Design Considerations

4.4 Design Parameters and Procedure

4.5 Design Example

4.6 Construction

4.7 Quality Control and Assurance

Problems

References

Chapter 5: Deep Replacement

5.1 Introduction

5.2 Principles

5.3 Design Considerations

5.4 Design Parameters and Procedure

5.5 Design Examples

5.6 Construction

5.7 Quality Control and Assurance

Problems

References

Chapter 6: Drainage and Dewatering

6.1 Introduction

6.2 Principles of Water Flow in Geomaterial

6.3 Filtration

6.4 Drainage

6.5 Dewatering

Problems

References

Chapter 7: Preloading

7.1 Introduction

7.2 Principles

7.3 Design Considerations

7.4 Design Parameters and Procedures

7.5 Design Example

7.6 Construction

7.7 Quality Control and Assurance

Problems

References

Chapter 8: Deep Mixing and Grouting

8.1 Introduction

8.2 Deep Mixing

8.3 Grouting

Problems

References

Chapter 9: In Situ Ground Reinforcement

9.1 Introduction

9.2 Ground Anchors

9.3 Soil Nailing

Problems

References

Chapter 10: Fill Reinforcement

10.1 Introduction

10.2 Geosynthetic-Reinforced Slopes

10.3 Geosynthetic-Reinforced Embankments

10.4 Geosynthetic-Reinforced Column-Supported Embankments

10.5 Mechanically Stabilized Earth Walls

10.6 Geosynthetic-Reinforced Foundations

10.7 Geosynthetic-Reinforced Roads

Problems

References

Index

End User License Agreement

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Guide

Cover

Table of Contents

Preface

Begin Reading

List of Illustrations

Chapter 1: Introduction

Figure 1.1 Options for foundations (modified from Mitchell and Jardine, 2002).

Figure 1.2 Options for earth retaining structures.

Figure 1.3 Available ground improvement methods for different soil types (modified from Schaefer et al., 2012).

Figure 1.4 Flowchart for selection of ground improvement method.

Chapter 2: Geotechnical Materials, Testing, and Design

Figure 2.1 Useful particle sizes.

Figure 2.2 Phase diagram.

Figure 2.3 Plasticity chart (with permission from ASTM, copyright ASTM International.)

Figure 2.4 Consolidation test.

Figure 2.5 plot.

Figure 2.6 Coefficient of compressibility.

Figure 2.7 Coefficient of consolidation versus liquid limit (NAVFAC, 1982).

Figure 2.8 (a) Direct shear and (b) triaxial shear tests.

Figure 2.9 Stress−strain and volume relationships.

Figure 2.10 Soil behavior: (a) drained and (b) underained.

Figure 2.11 Total and effective Mohr–Coulomb failure envelopes.

Figure 2.12 Effective peak friction angle of coarse-grained soil (NAVFAC, 1982).

Figure 2.13 Effective friction angle of normally consolidated soil (Mitchell and Soga, 2005).

Figure 2.14 Unconfined compression and unconsolidated undrained tests.

Figure 2.15 Constant for undrained elastic modulus (Joint Department of the Army and Air Force, USA, 1983).

Example Figure 2.1

Figure 2.16 Packing pattern of uniform particles and void ratio: (a) Simple eubic, (b) cubic tetrahedral, (c) tetragonal sphenoidal, (d) pyramidal, and tetrahedral (modified from Mitchell and Soga, 2005).

Figure 2.17 Clay fabric: (a) dispersion and (b) flocculation.

Figure 2.18 Typical compaction curve.

Figure 2.19 Soil fabrics at different moisture contents and compaction efforts (modified from Lambe, 1958).

Figure 2.20 Effect on permeability (after Lambe, 1958).

Figure 2.21 Effect on compressibility: (a) low pressure and (b) high pressure (modified from Lambe, 1958).

Figure 2.22 Effect of soaking on strength (modified from Lambe, 1958).

Figure 2.23 Effect on swell and shrinkage (after Seed and Chan, 1959).

Figure 2.24 Geotextile products.

Figure 2.25 Geogrid products.

Figure 2.26 Geonet product.

Figure 2.27 Geomembrane products.

Figure 2.28 Geosynthetic clay liner products.

Figure 2.29 Geocell product.

Figure 2.30 Permittivity test.

Figure 2.31 Transmissivity test.

Figure 2.32 Water vapor transmission test.

Figure 2.33 (a) ASTM D4632 grab, (b) ASTM S751 narrow strip, and (c) ASTM D4595 wide width tests.

Figure 2.34 Tensile stress−strain curve.

Figure 2.35 Geosynthetic seam test.

Figure 2.36 Geogrid junction strength test.

Figure 2.37 Mullen burst test: (a) test setup and (b) test result.

Figure 2.38 Geosynthetic puncture test.

Figure 2.39 Geosynthetic tear tests.

Figure 2.40 Creep test results.

Figure 2.41 Estimation of creep strength at the end of design life.

Figure 2.42 Interface shear test (modified from Koerner, 2005).

Figure 2.43 Interface shear test results (after Koerner, 2005).

Figure 2.44 Geosynthetic pullout test.

Figure 2.45 Connection test.

Example Figure 2.2

Figure 2.46 SPT test (Mayne et al., 2001).

Figure 2.47 Cone penetration test (Mayne et al., 2001).

Figure 2.48 CPT profiles (Courtesy of Paul Mayne).

Figure 2.49 CPT soil type classification

Figure 2.50 Vane shear test.

Figure 2.51 Pressuremeter test (Mayne et al., 2001).

Figure 2.52 Typical pressuremeter curve.

Figure 2.53 (a) Plate load test and (b) test result.

Example Figure 2.3 Applied pressure vs. settlement.

Figure 2.54 Ultimate bearing capacity considering general shear failure.

Figure 2.55 Bearing capacity factor considering limited thickness of soft soil (modified from Bonaparte et al., 1978).

Figure 2.56 Settlement vs. time.

Figure 2.57 Shallow foundation and soil profile.

Figure 2.58 e−log plot.

Figure 2.59 Stress distribution in a soil medium.

Figure 2.60 Strain influence factor, , with depth.

Example Figure 2.4

Figure 2.61 Dissipation of excess pore water pressure and one-dimensional consolidation.

Figure 2.62 Components of a slope.

Figure 2.63 Space, cost, and stability.

Figure 2.64 Possible failure modes of a slope.

Figure 2.65 Force diagram of infinite slope.

Figure 2.66 Force diagram of infinite slope with seepage.

Figure 2.67 Circular slip surface with (a) vertical slices and (b) force diagram.

Figure 2.68 Planar slip surface with (a) vertical slices and (b) force diagram.

Figure 2.69 Determination of interslice force angle and factor of safety.

Figure 2.70 (a) Two-part and (b) three-part wedge analyses.