Avaliação do conforto humano em sistemas estruturais submetidos a vibrações resultantes da ação do vento

Abstract

In structural projects, the action of dynamic character is usual procedure for the analysis of submitted structures the consideration of simplification, assuming these actions as of static nature. However, with the adoption of this type of simplification, actions capable to provide discomfort to the users cannot be verified. Especially in tall and thin buildings, questions related to the human comfort can present great relevance for the fact of the vibrations to provide, in some situations, the lack of concentration in the performance of activities, nausea, beyond relative uncertainties to the structural security. The present work has as objective to present procedures for the evaluation of the human comfort that serve to the professionals of the area for verification of the degree of comfort of the occupying people of tall and thin buildings, as well as parameters of global stability, searching to verify the correlation of these with the perception of the occupant. As these objectives had been effected numerical simulations with five structures, being that one in particular, executed in the city of Passo Fundo, in the state of the Rio Grande do Sul, presenting indications of relative problems the human discomfort caused by the action of the wind. Through criteria of evaluation of the human comfort of NBR 6123/1987, of the European Committee of Concrete and ISO 2631-1, verifications of the comfort for users of the constructions in study had been effected, with I assist it of the programs SAP2000 (Structural Analysis Program) and Eberick. By means of the gotten results it was proven that the attendance to the parameters of global stability does not excuse the verification of the conditions of human comfort. Finally, the carried through studies detach the relevance of the verification of the comfort to the occupants of high buildings front the static and dynamic action