THE EFFECT OF NON-LINEAR FINITE ELEMENT ANALYSIS ON THE DESCRIPTION OF THE GLOBAL BEHAVIOR OF A PREFABRICATED RC SKELETON

Nowadays, the behavior of designed structures is mostly studied using numerical software products. It is important that the models are sufficiently simple, but the calculated values approximate well the real behavior of the structures. In order for a numerical model to realistically describe the structural behavior, the software used must have material models that are parametrized accordingly. The primary purpose of this article is to create various prefabricated reinforced concrete specific joints in a simply prefabricated RC frame. Thus, in the present study, we examined prefabricated column-cup foundation and column-beam connections. The numerical analyses were carried out in the ATENA 3D software, in which the modeling technique we have developed can be used to examine reinforced concrete structures and structural details at a high level. In these studies, we highlight the differences between linear and nonlinear numerical methodologies. During our investigations, we analyze the joints of the examined frame in separate models on which we operate monotonically increasing vertical and horizontal loads. We examine the obtained load-displacement graphs, the failure of the connections, and the behavior of the elements that make up each connection. Finally, we extended the relationship by modeling the beam of the frame position, pointing out the behavior of the entire structure.