Evolution of deformation parameters during cyclic expansion tests at several experimental test sites
REIFFSTECK ; FANELLI ; DESANNEAUX
Type de document
COMMUNICATION AVEC ACTES INTERNATIONAL (ACTI)
Langue
anglais
Auteur
REIFFSTECK ; FANELLI ; DESANNEAUX
Résumé / Abstract
For thirty years, cyclic pressuremeter expansion tests carried out at different experimental sites have helped develop a rich and extensive database. The results from these high quality tests allowed stress-strain parameters to be derived at low and medium strain levels. These cyclic tests were carried out using Ménard and self-boring pressuremeters. Around fifteen sites were studied covering a wide range of behavior from sandy soils to clayey materials at stress histories varying from normally consolidated to overconsolidated. This paper will present the sites and test programs with their main geotechnical characteris-tics. The paper will focus on the evolution of shear modulus with the number of cycles, the material type, the amplitude ratio as well as the ratio of mean expansion pressure to the at-rest horizontal stress.
