In order to describe soil–structure interaction in various situations (nonlinear, static, dynamic, hydro-mechanical couplings), this book gives an overview of the main modeling methods developed in geotechnical engineering. The chapters are centered around: the finite element method (FEM), the finite difference method (FDM), and the discrete element method (DEM). Deterministic Numerical Modeling of Soil–Structure Interaction allows the reader to explore the classical and well-known FEM and FDM, using interface and contact elements available for coupled hydro-mechanical problems.
Furthermore, this book provides insight on the DEM, adapted for interaction laws at the grain level. Within a classical finite element framework, the concept of macro-element is introduced, which generalizes constitutive laws of SSI and is particularly straightforward in dynamic situations. Finally, this book presents the SSI, in the case of a group of structures, such as buildings in a town, using the notion of metamaterials and a geophysics approach.
Author(s): Stéphane Grange, Diana Salciarini
Series: Numerical Methods in Engineering Series
Publisher: Wiley-ISTE
Year: 2022
Language: English
Pages: 222
City: London
Cover
Half-Title Page
Title Page
Copyright Page
Contents
Introduction
Chapter 1. Hydro-mechanically Coupled Interface Finite Element for the Modeling of Soil–Structure Interactions: Application to Offshore Constructions
1.1. Introduction
1.1.1. The finite element method (FEM)
1.1.2. Review of existing contact formulations
1.1.3. Objectives
1.2. Governing equations of the interface problem
1.2.1. Mechanical problem
1.2.2. Flow problem
1.2.3. Couplings between mechanical and flow problems
1.3. Numerical formulation of the element
1.3.1. Space and fluid pressure discretization
1.3.2. Mechanical problem
1.3.3. Flow problem
1.3.4. Time discretization
1.3.5. Stiffness matrix
1.4. Application
1.4.1. Suction caissons
1.4.2. Problem description
1.4.3. Tension loading
1.4.4. Lateral loading
1.5. Conclusion and perspectives
1.5.1. Conclusion
1.5.2. Perspectives
1.6. References
Chapter 2. DEM Approach of the Modeling for Geotechnical Structures in Interaction with Reinforcements
2.1. Introduction
2.2. Discrete modeling
2.2.1. General concepts of the discrete modeling approach
2.2.2. Specific interaction between discrete particles and reinforcement elements
2.2.3. Numerical strategy for geotechnical structure modeling using DEM
2.3. Application of the DEM to geotechnical structures in interaction with rigid piles
2.3.1. Load transfer mechanisms within granular embankments over a network of piles
2.3.2. Load transfer mechanisms within granular embankments over a network of piles under cyclic loadings
2.4. Application of the DEM to geotechnical structures in interaction with flexible and deformable reinforcement – comparison wi
2.4.1. Numerical and experimental behavior of geosynthetic tubes filled with granular material
2.4.2. Numerical and experimental behavior of granular embankments reinforced with geosynthetic in areas prone to subsidence
2.5. Conclusion
2.6. References
Chapter 3. SSI Analysis in Geotechnical Engineering Problems Using a Finite Difference Method
3.1. Introduction
3.2. The finite difference method using an explicit scheme
3.3. Application of the finite difference method to soil–structure interaction problems
3.3.1. Structural elements
3.3.2. Interfaces
3.3.3. Constitutive models for soil
3.3.4. Dimension of the problem
3.3.5. Monotonic, quasi-static cyclic and dynamic loadings
3.4. Some application examples in the geotechnical engineering field
3.4.1. Reinforced retaining walls
3.4.2. Tunneling
3.4.3. Soft soil improvement using vertical rigid piles
3.5. Conclusion
3.6. References
Chapter 4. Macroelements for Soil–Structure Interaction
4.1. Introduction
4.2. The concept of generalized forces: Eurocode 8 recommendations
4.3. Macroelements for shallow foundations
4.3.1. Generalities
4.3.2. Macroelements formulated in the framework of hardening elastoplasticity
4.3.3. Macroelements formulated in the framework of hypoplasticity
4.4. The considered macroelements
4.4.1. The elastoplastic macroelement
4.4.2. The hypoplastic macroelement
4.5. Case study: seismic response of a reinforced concrete viaduct
4.5.1. Features of the viaduct
4.5.2. The finite element model of the viaduct and its foundations
4.5.3. Seismic input
4.6. Calibration of the macroelements
4.7. Results of the numerical simulations
4.7.1. Forces and displacements in the structural elements
4.7.2. Displacements of the abutment and the foundations
4.8. Concluding remarks
4.9. References
Chapter 5. Urban Seismology: Experimental Approach to Soil–Structure Interaction Towards the Concept of Meta-city
5.1. Introduction
5.1.1. Observation of soil–structure interaction under weak and strong seismic loading
5.1.2. Contamination of urban seismic motion by the vibration of buildings
5.1.3. Conclusion
5.2. References
List of Authors
Index
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