Estudo sobre tecnologia de contenção anti-sismos para proteção de impactos estruturais nas construções

Abstract

In Brazil, the earthquake phenomenon is relatively rare, and therefore it is disregarded in structural engineering projects, however, Brazilian seismicity is not null, being supported by NBR 15421. Earthquakes also interpreted as waves, can be intraplate, interplate or any type of vibration induced or not, that could damage the structure. The present work tries to evaluate the impact of the consideration of seismic action. In addition, it brings to the fore what the techniques and technologies involved in this type of study are. Technologies such as dampers and base insulation, have the principle of preventing damage to structural and non-structural elements of buildings, that may contain people, equipment and dangerous materials. The advantages these methods provide, in the dynamic behavior of structures subjected to seismic action, make them a complementary alternative to conventional systems, because they concentrate their study on the structural resistance and capacity of energy dissipation, reaching wide acceptance in seismic engineering. Thus, isolated buildings provide more security than non-isolated ones. Although national projects discard seismic action, there is a need to discuss proper procedures for the implementation and analysis of buildings, in addition it is relevant to know them, especially if they are for special operations and collective use constructions, apparently the treating of seism, does not mean totally elimination of danger, but it is admissible that such treatment would minimize the vulnerability of the risk, making it acceptable, and plausible within the economic and social cost involved.