Publications de Fabrice Dupray

Numerical analysis of canister movements in an engineered barrier system

The mid-term safety of deep geological nuclear waste repositories is based in part on the presence of a buffer, the main role of which is to isolate the environment from radionuclides. A design evaluation of such a repository is necessary to assess the pot ...

Springer Verlag2016

New technologies and applications: materials and equipment in near surface geothermal systems

Lyesse Laloui, Thomas Mimouni, Fabrice Dupray, Melis Sütman

This paper presents an overview of new technologies and applications on thermoactive geostructures. A discussion session on issues involved with near surface geothermal systems is presented, focusing on opportunities for developing new technologies to addr ...

2014

Numerical analysis of seasonal heat storage in an energy pile foundation

Lyesse Laloui, Fabrice Dupray, Albin Maurice Yandry Kazangba

The use of concrete geostructures for energy extraction and storage in the ground is an environmentally friendly and easy way of cooling and heating buildings. With such energy geostructures, it is possible to transfer energy from the ground to buildings b ...

Elsevier2014

Estimating the geothermal potential of heat exchanger anchors on a cut and cover tunnel

Lyesse Laloui, Thomas Mimouni, Fabrice Dupray

This study addresses the geothermal potential of using the anchors of a cut-and-cover tunnel as heat exchangers with the ground for seasonal heat storage. The influence of the soil properties and water table level were investigated. Various service conditi ...

Elsevier2014

Heat-exchanger piles for the de-icing of bridges

Lyesse Laloui, Fabrice Dupray, Chao Li

Of the various types of road structures, bridges are the most exposed to icing; the problem of icing is widely addressed through salting, which reduces the lifespan of the bridge. One promising solution to avoid the use of salt is the seasonal storage of s ...

Springer Verlag2014

THM coupling sensitivity analysis in geological nuclear waste storage

Lyesse Laloui, Fabrice Dupray, Chao Li

A deep geological repository involving a multi-barrier system constitutes one of the most promising options to isolate high-level radioactive waste from the human environment. In order to certify the efficiency of waste isolation, it is essential to unders ...

Elsevier2013

Numerical study of the heating-cooling effects on the geotechnical behaviour of energy piles

Lyesse Laloui, Fabrice Dupray, Alice Di Donna

Energy geostructures represent a renewable and clean source of energy which can be used for heating and cooling of buildings and de-icing of infrastructures. This technology couples the structural role of geostructures with the energy supply, using the pri ...

Taylor & Francis Group2013

Effect of groundwater flow on the THM behavior of an energy pile

Lyesse Laloui, Mélanie Baehler, Fabrice Dupray

Bridges are one of the road structures that are most exposed to icing, a problem that is widely dealt with through salting, a technique that reduce the lifespan of the bridge. Seasonal storage of solar heat energy captured directly through the asphalt laye ...

Taylor & Francis Group2013

Advances in thermo-active foundations and underground structures

Lyesse Laloui, Thomas Mimouni, Fabrice Dupray

2013

Analysis of the FEBEX multi-barrier system including thermo-plasticity of unsaturated bentonite

Lyesse Laloui, Bertrand François, Fabrice Dupray

Deep geological repository involving a multi-barrier system constitutes one of the most promising options for isolating high-level radioactive waste from the human environment. In order to certify the efficiency of waste isolation it is essential to unders ...

Wiley-Blackwell2013

Advances in the analysis of thermo-active foundations

Lyesse Laloui, Thomas Mimouni, Fabrice Dupray

Energy geostructures are foundations equipped with absorber pipes, exchanging heat with the surrounding ground. They provide a good heat source for the heating and cooling of buildings but the temperature variations they undergo bring new challenges. Therm ...

Taylor & Francis Group2013

Coupled seismogenic geohazards in Alpine regions

Lyesse Laloui, Pierino Lestuzzi, Alessio Ferrari, Clotaire Michel, Fabrice Dupray, Amin Karbassi, Cyrill Silvan Baumann

COupled seismogenic GEohazards in Alpine Regions (COGEAR) is an interdisciplinary natural hazard project investigating the hazard chain induced by earthquakes. It addresses tectonic processes and the related variability of seismicity in space and time, ear ...

2012