3D numerical model in nonlinear analysis of the interaction between subsoil and SFCR slab

Abstract

For decades attention has been paid to interaction of foundation structures and subsoil and, in turn, to development of interaction models. 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.). Input data for numerical analysis were observed experimental loading test of steel-fibre reinforced concrete slab. The loading was performed using unique experimental equipment which was 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. The modulus of deformability changes continuously, depending on the depth, in the inhomogeneous half-space. Values calculated by 3D numerical model were compared with values measured during the loading test of steel-fibre concrete slab.