Influência da temperatura nas propriedades dinâmicas de uma viga de concreto armado.

Abstract

The modal analysis is being used to verify the structure’s integrity and security, representing a way to identify and locate structural damages. Apparently, not every changing on the dynamic features comes necessarily from a structural damage. The temperature is an environmental factor that changes the structure’s pyshical and geometrical properties, which chan change its hardness and, consequently, the natural vibration frequencies, modal forms and damping. Therefore, this paper tried to study the influence of the temperature variation on the dynamical properties of na reinforced concrete intact beam, using the Ansys Student software to execute its modeling. It’s noticetable with the found results that the temperature causes a minimum variation on the reinforced concrete beam frequency, that can interfere or not on the damage detection methods based on the dynamical properties of an structures.