Concepts and Models Regarding the Behavior of Antiseismic Devices for the Base Isolation System

• Main Authors: Polidor BRATU, Patricia MURZEA, Carmen ALEXANDRU, Ovidiu VASILE
• Format: Article
• Language: English
• Published: National R&D Institute URBAN-INCERC, INCERC Bucharest Branch 2013-07-01
• Series: Constructii: Journal of Civil Engineering Research
• Subjects: rheological models; dampers; laboratory testing
• Online Access: http://constructii.incerc2004.ro/Archive/2013-1/Constructii_2013_Vol.14_No.1_ID2013140103.pdf

The paper presents the main antiseismic devices, as component elements of the base isolation systems, in such a manner that the functional and constructive parameters are correlated with the inertial and stiffness characteristics of the dynamic isolated building. Also, each device will be characterized through a rheological model, which conditions the eigenvalues and eigenvectors spectrum, as well as the dynamic response to an exterior excitation of a seismic nature. In this context, antiseismic devices defined and characterized by the European Standard EN 15129 will be presented. Based on the requirements formulated in the norm, the devices can be identified and their laws of evolution established and checked as follows: antiseismic devices with permanent rigid connection; antiseismic devices with rigid connections with respect to the instantaneous displacement and antiseismic devices dependent on the velocity and on the velocity variation in time.