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STRUCTURAL CHARACTERISTICS FROM MICROSEISMIC RECORDINGS AND NUMERICAL ANALYSIS

Published in AgroLife Scientific Journal, Volume 8, Number 1
Written by Claudiu Sorin DRAGOMIR, Daniela DOBRE

The dynamic analysis is based on a simplified model for the seismic action, structural system and the soil, but it should be correlated with the techniques of experimental investigation of vibrations generated by various seismic/non-seismic sources. Currently, the limitations of equipment are reduced, there is modern equipment of last generation and the buildings can be monitored from distance and the data can be transmitted to users or to research institutes in the field through a system of transmitting data in real time. As a case study, an existing building is presented, to get the natural vibration modes; these vibration modes will be validated by the values obtained from the micro seismic instrumentation. A comment on range of vibration frequency for the studied building, as possibly obtained also in the case of strong seismic motion, will be done. It is very important to be established if from recordings data, the structural response to micro seismic actions consists always in frequencies corresponding to the natural vibration modes and, in the case of another type of motion, the dynamic characteristics will be the same.

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