Estabilidade global e fator gama z : estudo comparativo de edifício composto por lajes lisas.

Abstract

In view of the current context of civil engineering, new building execution methodologies have been created in order to optimize such elements. The objective of an optimized construction is to use as few professionals and materials as possible on the construction site, thus being sustainable. The present work aims to deepen the study of tall buildings, more precisely in the behavior of such structures in the face of wind forces, which is the main agent that causes unfavorable actions to the stability of the building. By means of an experiment simulated by the CAD / TQS software and a practically symmetrical building plan, a pre-dimensioning was carried out, respecting the parameters of NBR 6118/2014, resulting in a building with 35 pillars, and beams 45 cm high, from this model, three more models were made, which served as a basis for obtaining the stability study. The pre-dimensioned model, perfected to be within the stability parameters, was taken as a reference because it is considered a traditional system of beams and slabs columns, while the others are composed of smooth slabs, among them it was differentiated in flat slabs and ribbed slabs . This work also simulated different pillar arrangements in order to generate a building within the stability parameters of NBR 6118, without losing the project's economy, which can render any project unfeasible. Finally, a comparative study of costs was carried out between the buildings analyzed and, based on the consumption of concrete and form, as well as the stability parameters, the one with the best cost-benefit ratio was identified.