Vulnerability Analysis and Seismic Retrofit of a Strategic Building
Publication: Journal of Performance of Constructed Facilities
Volume 31, Issue 2
Abstract
The seismic vulnerability analysis of a strategic building is presented in this paper. A refined finite-element model was set up on the basis of available experimental results, and updated on the basis of new experimental analyses on materials and structure. As demonstrated by an experimental vibration analysis, the structural behavior is influenced very much by the irregularity of the building and the presence of an adjacent building with no seismic joint. The results indicate a high vulnerability of the building to seismic actions, and the inadequacy of the pile foundation—for which a specific nonlinear analysis was performed—to support horizontal seismic loads. A retrofit intervention, based on the insertion of a seismic isolation system and the realization of a seismic joint with the adjacent building, was proposed, which allows the reduction of horizontal forces in the piles and the torsional movements of the structure.
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Acknowledgments
The activities described in this paper were carried out in the framework of an agreement between ENEA and the Regional Council of Abruzzo, Italy. The authors are particularly grateful to Dr. Piero Farinosi for his helpful contribution to this study.
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Published In
Journal of Performance of Constructed Facilities
Volume 31 • Issue 2 • April 2017
Copyright
© 2016 American Society of Civil Engineers.
History
Received: Oct 8, 2015
Accepted: Jun 3, 2016
Published online: Jul 19, 2016
Discussion open until: Dec 19, 2016
Published in print: Apr 1, 2017
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