The results of a campaign of ambient vibration measurements carried out on the site of Villa Ruffo in Rome are presented. The vibrations are generated by the passage of trains in the existing subway line that crosses the park of the Villa. The line will be discontinued in the next years and replaced with a brand new one. The acquisitions allowed to evaluate the actual vibrations level, accordingly to the procedure indicated by the Italian Code UNI 9614 and to assess the discomfort induced to people. As the vibration level exceeds the limiting value, a system to mitigate the vibrations, to be installed in the new line, was designed. It consists in a tuned mass floating trackbed, composed of R.C. slab resting over steel sprigs, designed to filter the range of frequencies of the disturbance. A finite element model was used to discuss the effects of the slab compliance.
Ambient vibration analysis and mitigation in the site of Villa Ruffo in Rome
BRECCOLOTTI, Marco;MATERAZZI, Annibale Luigi
2005
Abstract
The results of a campaign of ambient vibration measurements carried out on the site of Villa Ruffo in Rome are presented. The vibrations are generated by the passage of trains in the existing subway line that crosses the park of the Villa. The line will be discontinued in the next years and replaced with a brand new one. The acquisitions allowed to evaluate the actual vibrations level, accordingly to the procedure indicated by the Italian Code UNI 9614 and to assess the discomfort induced to people. As the vibration level exceeds the limiting value, a system to mitigate the vibrations, to be installed in the new line, was designed. It consists in a tuned mass floating trackbed, composed of R.C. slab resting over steel sprigs, designed to filter the range of frequencies of the disturbance. A finite element model was used to discuss the effects of the slab compliance.I documenti in IRIS sono protetti da copyright e tutti i diritti sono riservati, salvo diversa indicazione.
