Enhanced shear-pullout-testing device for the examination of the interaction behaviour of soil-geosynthetic-compound-systems

摘要

A novel experimental apparatus for the examination of the interaction behaviour of soil-geosynthetic-compound-systems - called the Geosynthetic-Interaction-Testing-Device (GITD) - capable of performing both pullout and direct shear tests is described. The construction of the testing device enforces mechanically correct kinematic and kinetic boundary conditions in the sample of the tested material or material composite. The influence of side friction conditions at the vertical and horizontal boundaries of the shear frame on the kinematics in the tested material have been numerically examined with the program FLAC 2d (v.3.40).