INFLUENCE OF 3D NUMERICAL MODEL PARAMETERS IN ANALYSES OF THE INTERACTION OF STEEL-FIBER REINFORCED CONCRETE SLAB WITH SUBSOIL

Interaction of foundation structures and subsoil and development of interaction models is the current problem. Static solution of this task is affected by several factors. Complexity of a static solution is given mainly by selection of a computational model, effects of physical-nonlinear behaviour of such structure and co-effects of the upper structure and the foundation structure. Numerical analyses described in the paper were done. Input data for numerical analysis were observed experimental loading test of steel-fibre reinforced concrete slab. The loading was performed using unique experimental equipment constructed in the area Faculty of Civil Engineering, VSB-TU Ostrava. Homogeneous half-space this takes no account and calculated settlement is' strongly dependent on the size of the subsoil model, as parametric study demonstrated. Values calculated by 3D numerical model were compared with values measured during the loading test of steel-fibre concrete slab. The article provides an evaluation of the dependence of geometric parameters of the 3D numerical model and the resulting vertical deformation.