DETERMINATION OF AN ARTIFICIAL BASE ACCELEROGRAM COMPATIBLE WITH A NATIONAL BUILDING CODE FOR SEISMIC RESISTANT BUILDINGS

Ronnie Chtcot Brito¹; Reyolando M. L. R. F. Brasil²

¹ Polytechnic School, University of São Paulo (USP), SP, Brazil; ² Federal University of ABC

doi:10.20906/CPS/CILAMCE2017-0073

Resumo

Although strong seismic events are rare in Brazil, Brazilian structural engineers are frequently involved in such analysis for neighboring Latin American countries. Seismic base excitation data, of random nature, is not, in general, available. Usual National Building Codes for seismic resistant constructions don't provide design base accelerograms for time history type analysis. The standard information is the so called Elastic Design Spectrum, that provides the maximum response acceleration for a one degree of freedom linear damped system, slightly different for each National Code. Much research is being developed to generate artificial base motion accelerograms compatible with these Code Spectra. Thus, in this paper, we present a study on a proposal for generating artificial base motion accelerograms compatible with the Brazilian National Code for Seismic Resistant Building.

Palavras-chave: structural dynamics; seismic analysis; Brazilian seismic resistant building code