A5036876841- Soil and Unsaturated Flow
- Geotechnical Engineering and Underground Structures
- Rock Mechanics and Modeling
- Geotechnical Engineering and Analysis
- Landslides and related hazards
- Geotechnical Engineering and Soil Mechanics
- Grouting, Rheology, and Soil Mechanics
- Geotechnical Engineering and Soil Stabilization
- Dam Engineering and Safety
- Groundwater flow and contamination studies
- Tunneling and Rock Mechanics
- Drilling and Well Engineering
- Geotechnical and Geomechanical Engineering
- Climate change and permafrost
- Hygrothermal properties of building materials
- CO2 Sequestration and Geologic Interactions
- Landfill Environmental Impact Studies
- Composite Material Mechanics
- Hydraulic Fracturing and Reservoir Analysis
- Fluid Dynamics Simulations and Interactions
- Natural Fiber Reinforced Composites
- Computational Fluid Dynamics and Aerodynamics
- Elasticity and Material Modeling
- Granular flow and fluidized beds
- Thermography and Photoacoustic Techniques
Laboratoire de Tribologie et Dynamique des Systèmes
2013-2024
École Nationale des Travaux Publics de l'État
2014-2024
Université Claude Bernard Lyon 1
2012-2023
Centre National de la Recherche Scientifique
2009-2023
Institute of Mountain Hazards and Environment
2016-2017
Institut de Radioprotection et de Sûreté Nucléaire
2017
Nantes Université
2017
Institut de Recherche en Génie Civil et Mécanique
2017
Laboratoire de Mécanique et Génie Civil
2013
École Normale Supérieure - PSL
2000-2013
Abstract This paper proposes a general formulation of an elastoplastic model adapted to unsaturated soils. enters within the framework two independent state variables descriptions. The choice particular effective stress combined with suction is made. definition this based on equivalent pore pressure which essential point type models. It will be discussed in paper. can seen as methodology allowing adapt straightforward way most behaviour models classically used saturated soils mechanics...
Abstract This paper presents a constitutive model for unsaturated soils with only 13 parameters. Its development is based on the concept of bounding surface plasticity under critical state framework. The definition effective stress via an equivalent pore pressure and introduction suction effects into general plastic hardening mechanism are inspired from work Pereira et al. ( Ph.D. Thesis , 2005) that few others. Despite minimal number parameters, this can simulate correctly complex...
An analytical model on the general behaviour of a tunnel head, reinforced by finite length bolts is proposed. This based homogenization method and spherical symmetry assumption. Despite its simplicity, in consequence limits validity, it does allow quick estimation key design parameters: frontal displacement, extension decompressed zone, ground stresses bolt tension, constitutes thereby very useful handy tool for engineers. In particular, influence reinforcement length, as well other...
SUMMARY Safety assessment of geosequestration CO 2 into deep saline aquifers requires a precise understanding the study hydro‐chemo‐mechanical couplings occurring in rocks and cement well. To this aim, coupled chemo‐poromechanical model has been developed implemented research code well‐suited to resolution fully problems. This is based on finite volume methods. In 1D axisymmetrical configuration, aims simulate behaviour system composed by well caprock during injection. Major chemical...
Summary Damage induced by microcracking affects not only the mechanical behaviour of geomaterials but also their hydraulic properties. Evaluating these impacts is important for many engineering applications, such as safety assessment radioactive waste disposal facilities. This paper presents a new constitutive model accounting simultaneously impact damage on and properties unsaturated poroplastic geomaterials. The hydro‐mechanical coupling formulated means thermodynamic framework partially...
In this paper a new analytical model is proposed to analyse the displacement behaviour of tunnel face reinforced by bolts, using homogenization approach for periodic media. Based on previous works, was developed take into account finite bond strength groutsoil interface, which more realistic than perfect bonding assumption. The interface simulated an elastic perfectly plastic constitutive law. sliding occurs when shear stress reaches strength. This feature allows correct estimate bolt...
Abstract Clay rocks are multiphase porous media having a complex structure and behaviour characterised by heterogeneity, damage viscosity, existing on wide range of scales. The mesoscopic scale mineral inclusions embedded in clay matrix has an important role the mechanisms deformation under mechanical loading cracking creeping. This study introduces micromechanical approach to model time‐dependent rocks. A heterogeneous rock is represented at as composite material consisting rigid elastic...
A new unsaturated soil model was recently developed at Ecole Nationale des Travaux Publics de l’Etat (ENTPE), based on the concept of bounding surface plasticity. The first version this (by Morvan et al. in 2010 ) only required 12 parameters for its definition, and yet can simulate a few behaviors typically observed fine sands, which more classical models fail to reproduce. These include post-peak softening, change from contractant dilatant behavior during shearing, smooth transition elastic...