Análise de vibrações em pisos de edifícios de concreto submetidos a atividades humanas rítmicas

Abstract

This paper seeks to study the dynamic behavior of isolated reinforced concrete floors, when subjected to dynamic excitations from rhythmic human activities (dancing, aerobic gymnastics and jumping at will). Therefore, this paper investigates the dynamic behavior of structural models of concrete building floors, being simply supported square slabs with sides equal to 6 meters. Usual discretization techniques are used, via the finite element method (FEM), using the ANSYS program. The results obtained indicate that the recommended limits by design international standards, regarding the values of peak accelerations (maximum accelerations) may be violated in some specific situations. This fact demonstrates that these rhythmic activities can generate high levels of peak accelerations, violating design criteria regarding human comfort. It was found that the performance of these rhythmic human actions can generate important disturbances in floors of different thicknesses of slabs. The criteria of standard NBR 6118:2023 may be checked in relation to excessive vibrations, however, they can compromise human comfort due to high peak accelerations present on the floor.