Damage Detection and Localization on Real Structures Subjected to Strong Motion Earthquakes Using the Curvature Evolution Method: The Navelli (Italy) Case Study
Open Access
- 14 July 2021
- journal article
- research article
- Published by MDPI AG in Applied Sciences
- Vol. 11 (14), 6496
- https://doi.org/10.3390/app11146496
Abstract
In recent years, structural health monitoring (SHM) has received increasing interest from both research and professional engineering communities. This is due to the limitations related to the use of traditional methods based on visual inspection for a rapid and effective assessment of structures and infrastructures when compared with the great potential offered by newly developed automatic systems. Most of these kinds of systems allow the continuous estimation of structural modal properties that are strictly correlated to the mechanical characteristics of the monitored structure. These can change as a result of material deterioration and structural damage related to earthquake shaking. Furthermore, a suitable configuration of a dense sensor network in a real-time monitoring system can allow to detect and localize structural and non-structural damage by comparing the initial and a final state of the structure after a critical event, such as a relevant earthquake. In this paper, the modal curvature evaluation method, used for damage detection and localization on framed structures, considering the mode curvature variation due to strong earthquake shaking, is further developed. The modified approach is validated by numerical and experimental case studies. The extended procedure, named “Curvature Evolution Method” (CEM), reduces the required computing time and the uncertainties in the results. Furthermore, in this work, an empirical relationship between curvature variation and damage index has been defined for both bare and infilled frames.Keywords
Funding Information
- Italian Department of Civil Protection (Reluis 2019-2021 - WP6)
This publication has 45 references indexed in Scilit:
- Analysis of non-stationary structural systems by using a band-variable filterBulletin of Earthquake Engineering, 2012
- The interpolation damage detection method for frames under seismic excitationJournal of Sound and Vibration, 2011
- Interferometric Analysis of Strong Ground Motion for Structural Health Monitoring: The Example of the L'Aquila, Italy, Seismic Sequence of 2009Bulletin of the Seismological Society of America, 2011
- Structural parameter identification by use of additional known masses and its experimental applicationStructural Control and Health Monitoring, 2011
- A fast method for structural health monitoring of Italian reinforced concrete strategic buildingsBulletin of Earthquake Engineering, 2010
- Monitoring the response and the back-radiated energy of a building subjected to ambient vibration and impulsive action: the Falkenhof Tower (Potsdam, Germany)Bulletin of Earthquake Engineering, 2009
- Ground roll attenuation using the S and x‐f‐k transformsGeophysical Prospecting, 2007
- Nondestructive damage identification in plate structures using changes in modal complianceNDT & E International, 2005
- Localization of the complex spectrum: the S transformIEEE Transactions on Signal Processing, 1996
- Damage detection from changes in curvature mode shapesJournal of Sound and Vibration, 1991