This book approaches the problems of slopes and excavations with technical knowledge and helps to better control the dangers and thus prevent damage to the population. Embankments as sloping earth surfaces occur everywhere. They are more or less worked by man, thus altering their natural state. Thus one should the effects of these changes and to be sure about the safety of the slopes. Only with this knowledge changes should be carried out in order to be able to assess their impact on people and the surrounding area. Excavation pits are being placed deeper and and closer to neighboring structures, and must therefore be handled by engineers.
Author(s): Bernhard Wietek
Publisher: Springer
Year: 2022
Language: English
Pages: 391
City: Cham
Preface
Contents
1 Introduction
And the moral of the story: you can’t work against nature!
2 Slopes
2.1 Formation of slopes
2.2 Loose material
2.2.1 Rolling soils
2.2.2 Soils with cohesive components
2.2.3 Terrain fracture
2.3 Rock
2.3.1 No fissure filling
2.3.2 Rolling fissure filling
2.3.3 Cohesive fissure filling
2.3.4 Spatial sphere presentation
2.4 Building in permafrost
2.4.1 Permafrost
2.4.2 Wurmkogel Oetztal valley (Tyrol)
3 Excavations
3.1 Boundary conditions
3.1.1 Subsoil Investigation
3.1.2 Groundwater and slope water
3.1.3 Neighbor buildings
3.1.4 Construction cranes
3.1.5 Shortand long-term fuses
3.1.5.1 Short-term fuses temporary
3.1.5.2 Long-term fuses permanent
3.2 Coverage and networking
3.2.1 Free-hanging cover
3.2.2 Rock cross-links
3.2.3 Rockfall nets
3.3 Impact wall
3.4 Retaining wall
3.5 Stone walls
3.5.1 Raw stone wall
3.5.2 Mortared stone wall
3.6 Gabions (stone baskets)
3.7 Cushion wall
3.8 Geocells
3.9 Reinforced earth
3.10 Precast wall in front
3.11 Timber anchor wall
3.12 Krainerwall
3.13 Nailed shotcrete
3.13.1 Principle of production
3.13.2 Calculation
3.13.3 Execution with structural steel mesh reinforced shotcrete
3.13.4 Design with fiber concrete
3.13.4.1 Steel fiber concrete
3.13.4.2 Plastic fiber concrete
3.14 Comparison of different types of securing
4 Securing spatial terrain slopes
4.1 Simple theoretical consideration
4.2 Spatial slope stabilization
4.2.1 Road protection for parking lot
4.2.2 Securing the excavation pit for a ski depot
4.2.3 High slope stabilization for a hotel
4.3 Implications for practice
5 Excavation Shoring
5.1 Sheet pile wall
5.2 Soldier pile wall
5.3 Pile wall
5.4 Diaphragm wall
5.4.1 Production
5.4.2 Open slit
5.4.3 Vertical force transfer
5.4.4 Horizontal forces and moments
5.4.4.1 Testing of diaphragm wall elements
5.4.4.2 Application examples
5.5 Cutting wall
6 Underpinning
6.1 Conventional concrete discs
6.2 Nailed shotcrete
6.3 High-pressure soil grouting
7 Shaft structures
7.1 Spatial earth pressure
7.2 Flat side walls
7.3 Curved side walls
8 Anchors and soil nails
8.1 Classification
8.1.1 Small anchors or dowels
8.1.2 Medium load anchor
8.1.3 Ground and rock anchors
8.1.4 Heavy-duty anchors
8.2 Soil nails
8.2.1 Solid bar nail
8.2.2 Hollow bar nail
8.2.3 GRP Anchors
8.3 Anchors
8.3.1 Bar anchor
8.3.2 Strand anchor
8.4 Small pile GEWI pile
8.5 Durability of anchors
8.6 Monitoring of anchors
8.6.1 Monitoring the load capacity
8.6.1.1 Qualification test
8.6.1.2 Acceptance test
8.6.1.3 Lift-off test
8.6.1.4 Load cells
8.6.2 Monitoring corrosion
8.6.2.1 General
8.6.2.2 Electrochemistry
8.6.2.3 Types of corrosion
8.6.2.4 Potential measurement with electrodes
8.6.2.5 Polarization measurement with electrodes
8.6.3 For double corrosion-protected armatures
8.6.4 For simply corrosion-protected anchors
8.7 Extending the service life of anchors
8.7.1 general information on CCP
8.7.2 CCP for double corrosion protected anchors
8.7.3 CCP for simply corrosion-protected anchors
Appendix
List of Figures
Bibliography
Index
