Embankment on Soft Soil Reinforced by CMC Semi-Rigid Inclusions for the High-speed Railway SEA

The embankment going to Dordogne Viaduct crossed by the LGV South Europe Atlantic SEA is based on 4 000 semi-rigid inclusions (CMC) designed in accordance with ASIRI. Published in 2012, these recommendations are starting to be well known and applied around the world. Depending on the purpose of the CMC (stability or only settlement reduction), CMCs justifications differ. For the first case, verifications are more numerous and more severe. After CMC ground improvement work in 2013, the embankment had been performed and the rail is being installed. A monitoring setting up during project progress has allowed the comparison between predicted deformations and measurements.