FINITE-ELEMENT ANALYSIS OF OUT-OF-PLANE BUCKLING OF REINFORCED-CONCRETE WALLS

In this paper a FE model for the study of the out-of-plane buckling of reinforced concrete walls is derived. The concrete is modelled using non-linear orthotropic 16 d.f. plate bending elements; the reinforcing steel using elasto-plastic beam elements. In the plane of the structu re stresses are calculated using either four or eight-node membrane el ements with bar elements used for the reinforcing steel. The buckling load is calculated by determining when the determinant of the out-of-p lane tangent stiffness becomes zero. Comparison of the FE model with a vailable experimental results shows good agreement. Copyright (C) 1996 Elsevier Science Ltd