Aplicación de la transformada Wavelet para generar acelerogramas artificiales compatibles con el espectro de diseño sísmico del la NSR - 10

Abstract

This paper intends to apply the methodology of Suarez and Montejo (2005) using the "Wavelet" transform, to generate compatible artificial accelerograms with the NSR-10 seismic design spectrum for Cali in an area of high seismic hazard, due the lack of strong motion records in the south-western. This methodology specifies the use of the original record to decompose into an appropriate number of functions called "details", and finally scaling these details to reconstruct the signal, so that the response spectrum of the signal generated matches the design spectrum. This is done using a numerical algorithm in MATLAB. The accelerograms generated are compatible with percentages error less than 5% with a maximum of 9 iterations. Finally the results of a linear dynamic analysis "Time-History" with the ground motion generated and a modal spectral analysis using ETABS are compared, having proportionality between the results.