Seismic Behavior of Base Isolated Civil Protection Operative Center in Foligno, Italy
Publication: Journal of Performance of Constructed Facilities
Volume 35, Issue 4
Abstract
The analysis of the actual seismic behavior of the Operative Building of the Civil Protection Centre in Foligno, Italy, which is seismically isolated by means of high damping rubber bearings (HDRBs), is shown. An accelerometer network was installed on the structure. It recorded all the events of the seismic sequence that hit central Italy from August 2016 to January 2017. All the events had epicenters far from the building, so the effects at the site were quite low and the resonance frequencies measured were higher than the frequencies assumed in the design phase. The seismic filtering was effective. The strongest earthquake occurred on October 30, 2016, , with epicenter at Norcia, was studied in detail. A nonlinear law for the rubber shear modulus was deduced, which fits quite well with experimental data and was used for a nonlinear dynamic analysis of the entire building. The model was first tested analyzing the effects of the acceleration time-histories recorded during the mentioned event at the building basement. The responses obtained numerically at the sensor locations were compared with those recorded at the same locations during the quake. Then the model was used to analyze the structural response to a strong earthquake.
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Data Availability Statement
Some or all data, models, or code that support the findings of this study are available from the corresponding author upon reasonable request.
Acknowledgments
The research work leading to this paper has been developed in the framework of a research project carried out by ENEA, Umbria Region and L’Aquila University, Italy. The station at Norcia La Castellina (NOR) is part of the Italian Strong Motion Network (RAN) of the Civil Protection Department (http://ran.protezionecivile.it/IT/).
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Journal of Performance of Constructed Facilities
Volume 35 • Issue 4 • August 2021
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© 2021 American Society of Civil Engineers.
History
Received: May 4, 2020
Accepted: Jan 15, 2021
Published online: May 12, 2021
Published in print: Aug 1, 2021
Discussion open until: Oct 12, 2021
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