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Post-earthquake controls and damage detection through structural health monitoring: applications in l’Aquila

  • Filippo Lorenzoni
  • Mauro Caldon
  • Francesca da Porto
  • Claudio Modena
  • Takayoshi Aoki
Original Paper

Abstract

The paper presents structural health monitoring (SHM) activities performed on some representative cultural heritage (CH) buildings in the city of l’Aquila after the strong earthquake (Mw = 6.3) that struck the Abruzzo region (central Italy) on April 6, 2009. The severity and the extent of damages caused by the earthquake to historical buildings and monument were never reached before in the recent Italian earthquake history. Emergency activities started immediately after the earthquake to protect CH structures, including damage survey and design/implementation of temporary safety measures. Some historic buildings were soon equipped with monitoring systems in order to assess the level of damage and verify the effectiveness of the executed provisional interventions. The paper focuses in particular on two case studies, i.e. the Spanish Fortress and the Civic Tower. The results of preliminary investigations are reported, including damage survey and operational modal analysis for modal parameter identification using ambient vibration tests. 3-year static and dynamic monitoring features, automatically extracted from raw data acquired by continuous monitoring systems, were then processed using a data-driven approach based on regression analysis to filter out the environmental effects. Following this approach data are decomposed into their reversible and irreversible components, the latter being associated with active damaging processes and the residual structural performance of the two buildings assessed.

Keywords

Structural health monitoring Cultural heritage Modal analysis System identification Damage detection 

Notes

Acknowledgements

The research described in the paper is part of the activities of the research project The Japan Society for the Promotion of Science (JSPS) for Grants-in-Aid for Scientific Research.

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Copyright information

© Springer-Verlag GmbH Germany, part of Springer Nature 2018

Authors and Affiliations

  1. 1.Department of Civil, Architectural and Environmental Engineering (DICEA)University of PadovaPaduaItaly
  2. 2.Graduate School of Design and ArchitectureNagoya City UniversityNagoyaJapan

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