Dynamic non-linear soil behaviour in alpine areas

Name: Dynamic non-linear soil behaviour in alpine areas | -
Brand: vdf Hochschulverlag AG
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Alexandru Marin(Autor*in)

vdf Hochschulverlag AG

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Erschienen am 1. November 2019

205 Seiten

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978-3-7281-3890-3 (ISBN)

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Dynamic non-linear soil behaviour in alpine areas
Foreword
Acknowledgements
Table of Contents
Abstract
Zusammenfassung
1. Introduction
1.1. Motivation
1.2. Main challenges of geotechnical earthquake engineering in alpine areas
1.3. Structure of the thesis
1.3.1. General concept
1.4. Laboratory investigations
1.4.1. Numerical investigations
1.4.2. Field investigations
1.4.3. Practical outreach
1.4.4. Conclusions and outlook
1.5. References
2. Aspects of Dynamic Material Behaviour of Alpine Silty Sand
2.1. Introduction
2.2. First stage of laboratory testing
2.2.1. General material description
2.2.2. Cyclic behaviour of the silty sand in Visp
2.3. Second stage of laboratory testing
2.3.1. General aspects
2.3.2. Maximum shear stiffness determination
2.3.3. Influence of the loading history on the stiffness and strength parameters
2.3.4. Influence of the pore pressure increase on the stiffness and strength parameters
2.4. Conclusions
2.5. References
3. One and Two-Dimensional Site Response in the Rhone Valley
3.1. Introduction
3.2. Investigation Methods
3.2.1. Modelling methods
3.2.2. General overview of local soil conditions
3.2.3. Soil model for 1D calculations
3.2.4. Soil model for 2D calculations
3.2.5. Seismic input motion
3.2.6. Parameters of the constitutive models
3.3. Results of 1D modelling
3.3.1. 1D modelling in the frequency domain using equivalent-linear soil properties
3.3.2. 1D modelling in the time domain using a linear elastic (LE) constitutive model
3.3.3. 1D modelling in the time domain using the linear elastic perfectly plastic Mohr-Coulomb constitutive model (MC)
3.3.4. 1D modelling in the time domain using the Hardening Soil Small Strain (HSs) constitutive model
3.3.5. Summary of 1D modelling
3.4. Results of 2D modelling
3.4.1. 2D modelling in the time domain using the linear elastic perfectly plastic Mohr-Coulomb (MC) constitutive model
3.4.2. 2D modelling in the time domain using the Hardening Soil Small Strain (HSs) constitutive model
3.4.3. Summary of 2D modelling
3.5. Conclusions
3.6. Acknowledgements
3.7. References
4. Modelling of Soil-Structure Interaction in Alpine Regions
4.1. Introduction
4.2. Idealised modelling
4.2.1. Soil profile
4.2.2. Soil parameters
4.2.3. Calibration of Rayleigh coefficients
4.2.4. Structural elements, foundation types
4.2.5. Input signal
4.3. Results
4.3.1. Results related to soil-structure interaction
4.3.2. Interaction between basement walls and surrounding soil
4.4. Performance based design. Conclusions and discussion
4.5. References
5. Installation and Instrumentation of a Long-Term Seismic Monitoring System in the Rhone Valley
5.1. Introduction
5.2. Details of the instrumented site
5.3. Components of the monitoring system
5.3.1. Shape-Acceleration Array
5.3.2. Multi-level piezometer array
5.3.3. Strong-motion sensor
5.4. Data handling
5.5. First static and dynamic measurements
5.5.1. Static measurements
5.5.2. Dynamic measurements
5.6. Conclusions
5.7. Acknowledgements
5.8. References
6. Displacement-Based Seismic Analysis of Slopes, Dams, and Embankments
6.1. Introduction
6.2. Calculation of seismic displacements
6.3. Development of the displacement estimation relationship
6.4. Discussion
6.5. Conclusions
6.6. Acknowledgements
6.7. References
7. Summarising Conclusions
7.1. Field Investigations
7.2. Laboratory investigations
7.3. Numerical investigations
7.4. Practical outreach
8. Outlook
8.1. Field investigations
8.2. Laboratory investigations
8.3. Numerical investigations
8.4. Displacement-based method for the evaluation of the seismic behaviour of slopes, dams, and embankments
9. References
10. Appendix I. Evaluation of the Seismic Behaviour of a Natural Steep Slope
10.1. Introduction
10.2. Description of the situation
10.3. General assessment of the slope stability under static conditions
10.4. Evaluation of the seismic global factor of safety
10.5. Evaluation of the seismic displacements
10.6. Detailed numerical analysis of the seismic behaviour of the slope
10.6.1. Numerical FE model
10.6.2. Constitutive models
10.6.3. Seismic action
10.6.4. Verification of the modelled seismic action
10.6.5. Results of the numerical simulations
10.7. Conclusion and discussion
10.8. Acknowledgements
10.9. References
11. Appendix II. Sicherungsmassnahmen der Rhone-Dämme
11.1. Einleitung
11.2. Methodik
11.2.1. Bestimmung der kritischen Geometrie des Dammprofils
11.2.2. Bestimmung des Baugrundmodells
11.2.3. Stoffgesetze, Bodenkennwerte und FE-Netz
11.2.4. Stoffgesetze und Kennwerte der Dichtwände
11.2.5. Seismische Einwirkung
11.3. Resultate der dynamischen Untersuchungen
11.3.1. Allgemeine Verformungen des Dammes
11.3.2. Entwicklung des Verformungsmechanismus
11.3.3. Setzungen infolge der seismischen Anregung
11.3.4. Seismisches Verhalten der Nachru¨stungsmassnahmen
11.4. Fazit
11.5. Referenzen
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