Seismic behaviour of an asymmetric three-dimensional steel frame with base isolation devices
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resumo
A parametric study on the use of base isolation devices in frame building structures
is undertaken. Frames were analysed with regular geometry starting from a baseframe
(BF), from which more complex frames were created by association of BF in
height above a certain asymmetric plant. The modularity of the BF facilitates the
analysis of the results, allowing for parametric studies on the use of base isolation
devices in more complex geometries. To conduct the computational studies the
commercial software SAP2000 was used. Three-dimensional (3D) structures were
analyzed with asymmetries in plant and in elevation. Some of the results of the
parametric study are presented graphically, identifying the importance of positioning
the seismic isolation devices used in each structural configuration.
