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Dynamic testing and health monitoring via wireless sensor networks in the post-earthquake assessment of structural conditions at L'Aquila

Author:
E. Antonacci, A.M. Ceci, A. Colarieti, V. Gattulli, F. Graziosi, M. Lepidi, F. Potenza

ABSTRACT

The use of vibration measures during ambient dynamic testing or integrated within permanent structural health monitoring systems may play a fundamental role in urban areas rich of strategic and monumental buildings, especially in post- earthquake scenarios, as the city of L’Aquila, struck by the devastating seismic events of April 2009. In particular, a careful use of different output-only identification procedures may help in extracting the structural signature from low-cost and easy-to- deployed wireless networks of dynamic sensors. This valuable experimental information may significantly increase the general confidence in understanding the real dynamic behavior of the structures which suffered moderate or severe damage due to the seismic action. The paper presents a pair of case-studies related to a historical church (the “Basilica di Collemaggio”) and some modern buildings (the Engineering Faculty of L’Aquila), currently object of wide-spectrum analyses, including dynamic testing and structural model updating aiming to design retrofitting interventions. On this respect, the initial deployment and the current development of a permanent monitoring system based on a wireless network of accelerometers is illustrated

Date:
04 Maggio 2013
File Size:
610.92 kB
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