A platform for research: civil engineering, architecture and urbanism
A platform for research: civil engineering, architecture and urbanism
Early-Warning Monitoring System for Masonry Structures
Collapse of historical buildings under static conditions has to be considered as a risk to deal with. Several events happened in the past as the collapse of the civic tower of Pavia, the bell tower of Venice (just to mention some of them) showing that, even without a strong external event, structures can collapse. Their collapse can produce enormous cultural, social and historical losses (intangible ones), if by chance human ones there are not. Therefore these structures present, on the same time, high vulnerability (that however is not possible to quantify) and high possible tangible and intangible losses. The problem is complex above all because we refer to historical structure that very often had already suffered for a damaging process in its history. Monitoring, identifying the crack pattern is the first step to prevent an increase of the damage. The present work tries to deal with this problem, giving a tool able to indicate in real time if anomalous conditions are passing on the structure, giving an alarm that can help to prevent the final collapse or at least avoid human losses. In our application we have referred to the Brunelleschi dome in Florence, a structure with an intangible value, economical, historical and cultural. A large monitoring system has been installed there in order to verify the stability of the structure that presents several cracks completely cutting the dome. By means of a thermoelastic analysis of data logged by sensors and by the following use of mathematical tools, a signal which can check in real-time data that are far from the ones associated to a normal behavior of the structure, have been set up. Also the stability of the cracks in mechanical term has been studied, after making a simple model of the structure that is however able to reproduce the main features of the structural behavior. The study gives also examples of an useful mathematical tool to detect singularities on a signal allowing also a spatial identification of the crack. Crack identification, crack monitoring and crack stability has therefore been pursued in order to identify dangerous conditions for existing structures.
Early-Warning Monitoring System for Masonry Structures
Collapse of historical buildings under static conditions has to be considered as a risk to deal with. Several events happened in the past as the collapse of the civic tower of Pavia, the bell tower of Venice (just to mention some of them) showing that, even without a strong external event, structures can collapse. Their collapse can produce enormous cultural, social and historical losses (intangible ones), if by chance human ones there are not. Therefore these structures present, on the same time, high vulnerability (that however is not possible to quantify) and high possible tangible and intangible losses. The problem is complex above all because we refer to historical structure that very often had already suffered for a damaging process in its history. Monitoring, identifying the crack pattern is the first step to prevent an increase of the damage. The present work tries to deal with this problem, giving a tool able to indicate in real time if anomalous conditions are passing on the structure, giving an alarm that can help to prevent the final collapse or at least avoid human losses. In our application we have referred to the Brunelleschi dome in Florence, a structure with an intangible value, economical, historical and cultural. A large monitoring system has been installed there in order to verify the stability of the structure that presents several cracks completely cutting the dome. By means of a thermoelastic analysis of data logged by sensors and by the following use of mathematical tools, a signal which can check in real-time data that are far from the ones associated to a normal behavior of the structure, have been set up. Also the stability of the cracks in mechanical term has been studied, after making a simple model of the structure that is however able to reproduce the main features of the structural behavior. The study gives also examples of an useful mathematical tool to detect singularities on a signal allowing also a spatial identification of the crack. Crack identification, crack monitoring and crack stability has therefore been pursued in order to identify dangerous conditions for existing structures.
Early-Warning Monitoring System for Masonry Structures
Frühwarn-Monitoring System für Bauwerke aus Mauerwerk
Bosi, Anna (author) / Universitätsbibliothek Braunschweig (host institution) / Budelmann, Harald (tutor)
2008
Miscellaneous
Electronic Resource
English
DDC:
624