Análise da estabilidade global de um edificio em concreto armado ao ser adotado núcleo rígido

Abstract

After a certain point, structures are no longer governed by vertical forces and are predominantly governed by horizontal forces. Given this fact, ensuring global stability is an essential need for all projects. In this work, three models were studied and the variation of the gamma Z parameter, maximum total displacements at the top of the building, maximum displacements between floors and the variation of 2nd order moments were verified. The Model 1 without rigid nucleus (M1SN) is composed only of the original pillars of the architectural plan. Model 2 with rigid nucleus and original pillars (M2CNPO) is composed of the original pillars plus the rigid core insert. Model 3 with rigid core and suitable pillars (M3CNPA) is composed of the rigid core together with the appropriate dimensions of the pillars to reach the service limits. It was possible to verify the increase in Global Stability in each of the models and confirm the effectiveness of this element in controlling second order effects. Keywords: Reinforced Concrete. Rigid Nucleus. Global Stability.