Estudo da influência da modelagem de lajes maciças no contraventamento de edifícios em concreto armado

Abstract

This paper presents a study on the behavior of solid slabs based on the bracing structure. Linear elastic analyzes were performed using a finite element software, Autodesk Robot Structural Analysis. Two different examples were studied, the first one, a rectangular plant and the second with an L-shaped plant. For the examples, three different methodologies were considered for modeling the slabs in the bracing structure, the so-called model 1, considers that the slab is an indeformable diaphragm, model 2, considers that the slab is deformable in its plane and with zero flexural stiffness, and the third model considers that the slab is deformable in its plane and that it has flexural stiffness. The results shows that for the examples studied, models 1 and 2 present almost identical results, and that model 3 presents an increase in stiffness in situations where the bracing panels are less rigid.