This paper presents the results of a recent research on the dynamic behaviour of an historic bell-tower, built in stonework masonry. The first part of the investigation involved: (a) an accurate survey of the tower geometry and of the crack pattern; (b) ambient vibration testing under wind, micro-tremors and swinging of bells; (c) modal identification; (d) FE modelling and model tuning. Since the amplitude of the excitation seems to affect the modal behaviour of the structure, a permanent dynamic monitoring system was recently installed inside the tower in order to investigate the changes in the modal parameters and the possible correlation with damage
Operational modal testing and analysis: an effective tool for the assessment of masonry towers
GENTILE, CARMELO;SAISI, ANTONELLA ELIDE
2009-01-01
Abstract
This paper presents the results of a recent research on the dynamic behaviour of an historic bell-tower, built in stonework masonry. The first part of the investigation involved: (a) an accurate survey of the tower geometry and of the crack pattern; (b) ambient vibration testing under wind, micro-tremors and swinging of bells; (c) modal identification; (d) FE modelling and model tuning. Since the amplitude of the excitation seems to affect the modal behaviour of the structure, a permanent dynamic monitoring system was recently installed inside the tower in order to investigate the changes in the modal parameters and the possible correlation with damageFile | Dimensione | Formato | |
---|---|---|---|
STREMAH09 487-498.pdf
Accesso riservato
:
Altro materiale allegato
Dimensione
1.89 MB
Formato
Adobe PDF
|
1.89 MB | Adobe PDF | Visualizza/Apri |
I documenti in IRIS sono protetti da copyright e tutti i diritti sono riservati, salvo diversa indicazione.