Passive single-station techniques applied for dynamic characterization of reinforced concrete buildings

Abstract

This work aims to better understand and improve the dynamic characterization of concrete frame buildings through the combined use of finite element modeling and applied seismology. The behavior of the FEM model is compared with values obtained directly in situ through non-invasive tests based on a sensor capable of detecting the seismic microtremor and provide direct information in terms of oscillation periods and displacements. The case study structure was measured using a seismometer, and, at the same time, modeled using SAP2000. By starting from extremely different initial data, multiple variations were made to the model to produce an increase in frequency, aligning it with the one detected instrumentally.

Conservation principles and structural performance of Modern heritage: the church of San Giovanni in Bosco in Bologna

“…However, it is not sufficient to characterize the complexity of the site seismic effects and the absolute value of the seismic amplification. In current literature, the measurement of the frequency of an existing building through experimental measurements allows confirming the reliability of the dynamic model of the structure when not all the structural conditions are known [16].…”