Located in the heart of Bologna, the two medieval towers (called “Due Torri”) represent the main symbol of the city. In order to preserve these monuments and to monitor their health, an exhaustive monitoring system has been recently installed on both towers. This monitoring system has started to be operative (four data acquisitions per hour have been planned) in the beginning of 2011. The system spoils a number of capabilities, allowing to monitor the time evolution of: (i) the state of deformation in selected critical regions located at the bottom of the towers (where the effects of the inclination are high); (ii) the tensional state of the steel ties placed over the years to confine the walls (the first ties inserted are those added in the Asinelli Tower in 1700’s; the last ones are those added in the Garisenda Tower in 2010), (iii) the (eventual) movements across selected cracks; (iv) the relative distances between fixed reference points; (v) the inclination of the towers. This paper aims at presenting the rationale, the characteristics and the capabilities of the monitoring system as well as selected preliminary results obtained from the first months of data acquisition.

The monitoring system of the "Due Torri" in Bologna, Italy: preliminary results

GASPARINI, GIADA;SILVESTRI, STEFANO;PALERMO, MICHELE;TROMBETTI, TOMASO;
2012

Abstract

Located in the heart of Bologna, the two medieval towers (called “Due Torri”) represent the main symbol of the city. In order to preserve these monuments and to monitor their health, an exhaustive monitoring system has been recently installed on both towers. This monitoring system has started to be operative (four data acquisitions per hour have been planned) in the beginning of 2011. The system spoils a number of capabilities, allowing to monitor the time evolution of: (i) the state of deformation in selected critical regions located at the bottom of the towers (where the effects of the inclination are high); (ii) the tensional state of the steel ties placed over the years to confine the walls (the first ties inserted are those added in the Asinelli Tower in 1700’s; the last ones are those added in the Garisenda Tower in 2010), (iii) the (eventual) movements across selected cracks; (iv) the relative distances between fixed reference points; (v) the inclination of the towers. This paper aims at presenting the rationale, the characteristics and the capabilities of the monitoring system as well as selected preliminary results obtained from the first months of data acquisition.
2012
Proceedings of the Workshop "Towards Intelligent Civil Infrastructure"
1
7
G. Gasparini; S. Silvestri; M. Palermo; T. Trombetti; G. Dallavalle
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Utilizza questo identificativo per citare o creare un link a questo documento: https://hdl.handle.net/11585/131506
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