Detailed view
Geotechnical Centrifuge
The geotechnical centrifuge, located on the Nantes Campus, has been one of the most active in the world since it was inaugurated in 1985 by research minister Prof. Hubert Curien. Featuring an earthquake simulator and an on-board remote-operated robot, the centrifuge can be used to study the behavior of geotechnical structures such as foundations, tunnels, offshore anchors, embankments and retaining structures in scale models. The results obtained enable us to observe and understand the phenomena involved: they can be directly transposed to full-scale structures via the application of similarity rules, and can be used to validate numerical simulations.
Controlled macrogravity tests are also used in the aeronautical, space and medical fields.
It is the only equipment of its kind for geotechnical applications in France, and one of the largest centrifuges in the world (5.5-meter radius, 2 tons on board, maximum acceleration 100×g). International exchanges with foreign centrifuge colleagues are thus regular, and international collaborations fruitful.
The geotechnical centrifuge is part of the GIS TheoREM network : "Réseau des Moyens d'Essais pour l'Hydrodynamique et les Énergies Marines Renouvelables" (theorem-infrastructure.org) as is the Cable fatigue test bench.
The team comprises 6 permanent researchers, 5 technicians and a part-time assistant. It welcomes several PhD students and post-docs each year.
Practical information
Themes/sub-themes
- Infrastructure and materials
- Geotechnie
Industrial sector(s)
- Marine industries
- Construction industries
Laboratory
- GERS / CG - Centrifugeuses Géotechniques
Field of expertise
- Soil-structure interaction
Some photos
The platform in detail
The geotechnical centrifuge is a versatile tool enabling studies on the behavior of geotechnical structures on scale models, by correctly reproducing the stress field. It is possible to observe and understand the behavior of structures, but also to obtain experimental data to be compared with theoretical and/or numerical models.
The main research topics are :
. Critical infrastructure (https://project-geolab.eu/ );
. Soil reinforcement (https://asiriplus.fr/);
. Off-shore anchors and foudations (https://emerge.univ-gustave-eiffel.fr/) such as piles (https://www.icevirtuallibrary.com/doi/10.1680/jgeen.18.00135), helical piles (https://www.youtube.com/watch?v=OSbdIfPJ0nU), anchoring mutualisation (https://www.france-energies-marines.org/projets/mutanc/ & www.weamec.fr/projets/mutanc-geotech/ ), sliding foundations for pipe-line (https://www.issmge.org/uploads/publications/53/54/044_Blanc%20et%20al.pdf ), deep foundation, monopiles (https://doi.org/10.1680/jgeot.21.00200) and jackets (https://doi.org/10.1680/jphmg.15.00044);
. Earthquake simulation covers many applications, such as deep foundations (DOI 10.1016 / j.engstruct.2019.109850), shallow foundations or the reinforcement of compressible soils by rigid inclusions (https://anr.fr/Projet-ANR- 19-CE22-0015)
. Other applications :
Foundations on unsaturated soil (https://doi.org/10.1139/cgj-2018-0322 ); deep foundations subjected to static or cyclic loading (https://doi.org/10.1680/jgele.15.00155); micropiles and screw piles (https://doi.org/10.1680/jphmg.17.00054),
shallow tunnels; retaining wallls (doi.org/10.1680/ijpmg.2004.040202 ), dike erosion (https://doi.org/10.1080/19648189.2012.667203) ; Vibration barriers (https://doi.org/10.1016/j.geotexmem.2009.03.006); Pollutant migration; Ore liquefaction; Model adjustmemnt and improvement of investigation methods (https://doi.org/10.1680/ijpmg.2007.070301).
The Centrif is also used for certification of aeronautical, space and medical equipement under constant acceleration; sensor certification; Flow and stress of granular materials, Crystal growth and combution.
The Centrifuge team has received numerous international awrads
The skills of researchers working around the centrifuge allow them to contribute to initial training (Nantes, Paris) or continuing training in France and abroad (Poland, Colombia), at the Bachelor's, Master's and Doctoral levels. The main areas are: 1) physical modelling in geotechnics; (2) seismic geotechnics; (3) the calculation of geotechnical structures; 4) soil mechanics.
Numerous partnerships with industry, particularly in joint venture tpe of research projects.
Contacts
Contact and manager
Matthieu BLANC, Luc THORELAddress
Fixed phone
+33 240 84 58 00Mail
matthieu.blanc@univ-eiffel.fr , luc.thorel@univ-eiffel.frUseful link
https://cg.univ-gustave-eiffel.fr/
Location
Fixed phone
+33 240 84 58 00Mail
matthieu.blanc@univ-eiffel.fr , luc.thorel@univ-eiffel.frUseful link
https://cg.univ-gustave-eiffel.fr/