Abstract
The contribution presents the results of 3D-stochastic modelling of slab-subsoil interaction. The cooperation between the centric loaded concrete foundation slab (square shape, dimension 2 m x 2 m, thickness 0.1 m) has been modeled as a contact problem using software MIDAS GTS (based on the finite element method). To take into account the stochastic character of the soil characteristics the stochastic simulation Latin Hypercube Sampling method was used. Four input stochastic parameters of soil were considered -elastic modulus, unit weight, friction angle and cohesion. From the contact modelling viewpoint two variants were modelled - first variant neglected the interface elements on the contact, in the second one the interface elements were involved into the model. The contribution presents the 90% confidence interval for the settlement in the centre of the upper surface of the slab and for the contact stresses below the slab also. The results of experimental measurements were used to the calibration of the model.