Author(s)

M. Hertweck & T. Schanz

Abstract

Modelling sliding interfaces with friction and gapping in geotechnics M. Hertweck, T. Schanz Institute of Geotechnical Engineering, FedeW JWzWe o/ ABSTRACT The numerical modelling of the interaction soil-mass/structure or between different soil-masses which are separated by geomembrans or geotextils is a well-known problem in geotechnics. One example for the use of sidelines in Geotechnical calculations is discussed by a multi- layer liner for steep walls in a waste disposal. The global bearing of the system is mainly influenced by the interaction of the different components which could be described by the friction angle. So for realistic simulation between the different materials the effects of friction, sliding, separation and closure have to be simulated. The mechanical properties of the materials and interfaces (slidelines) used in the FEM- code are determined by routine laboratory tests. For calibration of the slidelines the measured stress-strain-relations are back

Keywords