Comparação entre métodos de dimensionamento analítico e computacional de lajes maciças em concreto armado

Abstract

Solid reinforced concrete slabs are among the most widely used structural elements in buildings, being responsible for receiving and transferring loads to the other components of the structure. The design of these elements can be performed using different approaches, ranging from classical analytical methods to computational tools based on numerical analysis. In this context, the present study aims to compare the results obtained through analytical and computational design methods for solid reinforced concrete slabs. For the analytical design, the classical methods of Czerny and Bares were employed to determine the bending moments acting on the slabs. For the computational approach, two models were developed using the SAP2000® software: the first considering beams and columns, representing more closely the actual structural behavior, and the second replacing beams with nodal supports, in order to reproduce the boundary conditions adopted in the analytical methods. This research is characterized as an applied study with a qualitative approach, based on the analysis of a floor system composed of solid reinforced concrete slabs. The internal forces obtained from each method were used for reinforcement design and subsequently organized into comparative tables and graphs. The results are expected to provide a better understanding of the differences and similarities between the analyzed methods, contributing to the evaluation of the influence of calculation assumptions and modeling conditions on the design of solid reinforced concrete slabs.