Eventos Anais de eventos
COBEM 2017
24th ABCM International Congress of Mechanical Engineering
DETERMINATION OF AN ARTIFICIAL BASE ACCELEROGRAM COMPATIBLE WITH A NATIONAL CODE FOR SEISMIC ANALYSIS OF A SHEAR BUILDING MODEL
Submission Author:
Ronnie Brito , SP
Co-Authors:
Reyolando Brasil, Ronnie Brito
Presenter: Ronnie Brito
doi://10.26678/ABCM.COBEM2017.COB17-0243
Abstract
Although strong seismic events are rare in Brazil, Brazilian structural engineers are frequently involved in such analysis for neighboring Latin American countries. Here, we present a study on the seismic response of a shear building mathematical model of a tall building. Step-by-step numerical time integration via Finite Differences is implemented to solve the ordinary differential equations of motion. Information on seismic base excitation, of random nature, is not, in general, available. Usual National Building Codes for seismic resistant constructions do not provide design base accelerograms to compute the inertia forces at each level. 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 for each country. Much research is being developed in order to generate artificial base motion accelerograms compatible with these Code spectra. We presented a proposal for generating artificial base motion accelerograms compatible with the Brazilian National Code for Seismic Resistant Building. A base motion accelerogram generate according to our proposal was applied to a 10-store shear building model
Keywords
structural dynamics, seismic analysis, Brazilian seismic resistant building code
