Wavelet Transform Method for the Evaluation of the Seismic Response of One Isolated Building in the Lima Metropolitan Area

Jaramillo J.; Diaz M.; Zavala C.; Kusunoki K.; Inocente I.; Otero D. · Journal of Disaster Research (2023) · DOI: 10.20965/jdr.2023.p0338

Resumen

Structural health monitoring based on vibration mea-surements is a process that implements the instru-mentation of sensors and methodologies to provide information regarding the condition of a structure, which allows the evaluation of the safety and in-tegrity of structural systems. Because of this, in the past decades, several algorithms have been developed; among them, the wavelet transform is considered an efficient method for the elimination of the error con-tained in the acceleration recorded by the sensors. However, due to the complex nature of earthquakes and the particularity of the structural systems, the parameters used by the wavelet transform for error elimination in the seismic response are frequently vari-able. This paper proposes a method to get the seismic response of a base-isolated building subjected to ground-strong motions through numerical simulations of a mathematical model of the structure, using syn-thetic records based on historical seismic events oc-curring in Peru. In this way, the research found that the optimal intrinsic parameters of the building corre-spond to an approximate frequency interval of 0.20 to 6.25 Hz. Finally, the results show that this method is valid and can be reliably applied in structural health monitoring systems. © Fuji Technology Press Ltd.

Instituciones: Universidad Nacional de Ingeniería