Computational routine for the generation of artificial earthquakes through the Kanai-Tajimi spectrum and dynamic analysis using the Newmark method

Resumo

The dynamic analysis of structures becomes each day more important, due to the constant cases of
earthquakes around the world, which compromises the stability of buildings. In this context, the present study aims
to develop and validate a tool that allows analyzing the behavior of structures facing different earthquakes. This
tool was developed in the form of a computational routine in the MATLAB® software, through the implementation
of a code based on the generation of an artificial earthquake to obtain an artificial seismic accelerogram, by
applying the Kanai-Tajimi filter [6] and [7], and a routine with the Newmark method developed to solve the
dynamic motion equation. Then, the code was validated through results available in the literature, being them a
ten-story shear building by Mohebbi et al. [9] and a six-story shear building by Miguel et al. [10]. The results

obtained with the program allow dynamic analysis of any building, important for the dimensioning of energy-
dissipation devices. From the literature results, it was possible to validate and prove the employability of the

computational routine developed, since the results obtained in the present code converged to the literature reference
values, with some variations due to the randomness of the earthquake.