The San Michele bridge is an iron arch bridge that crosses the Adda river, linking the small towns of Paderno and Calusco d’Adda, about 50 km far from Milan. The bridge, completed in 1889, is the most important monument of XIX century iron architecture in Italy and is still used as a combined road and railway bridge. In order to assess the structural health condition of the bridge, ambient vibration tests were carried out between June 2009 and March 2010. These tests represented the first experimental survey carried out on the global characteristics of the bridge since the original static proof tests (1889-1892) and suggested the opportunity of installing a permanent dynamic monitoring system on the historic infrastructure with Structural Health Monitoring purposes. In the first part of the paper, after a description of the historic bridge, the most significant results obtained from the dynamic tests are briefly summarized. In the second part of the paper, full details are given on the dynamic monitoring system and the software developed to continuously process the recorded data. Furthermore, some results obtained in preliminary tests of continuous acquisition (November 2010) are presented.

Dynamic testing and permanent monitoring of an historic iron arch bridge

GENTILE, CARMELO;SAISI, ANTONELLA ELIDE;
2011-01-01

Abstract

The San Michele bridge is an iron arch bridge that crosses the Adda river, linking the small towns of Paderno and Calusco d’Adda, about 50 km far from Milan. The bridge, completed in 1889, is the most important monument of XIX century iron architecture in Italy and is still used as a combined road and railway bridge. In order to assess the structural health condition of the bridge, ambient vibration tests were carried out between June 2009 and March 2010. These tests represented the first experimental survey carried out on the global characteristics of the bridge since the original static proof tests (1889-1892) and suggested the opportunity of installing a permanent dynamic monitoring system on the historic infrastructure with Structural Health Monitoring purposes. In the first part of the paper, after a description of the historic bridge, the most significant results obtained from the dynamic tests are briefly summarized. In the second part of the paper, full details are given on the dynamic monitoring system and the software developed to continuously process the recorded data. Furthermore, some results obtained in preliminary tests of continuous acquisition (November 2010) are presented.
2011
Proceedings of the 8th International Conference on Structural Dynamics, EURODYN 2011
9789076019314
Ambient vibration testing; Bridge dynamics; Damage; Iron bridge; Structural Health Monitoring
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Utilizza questo identificativo per citare o creare un link a questo documento: https://hdl.handle.net/11311/589480
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